JPS62155373A - Forming method for bellows with fluorine film - Google Patents
Forming method for bellows with fluorine filmInfo
- Publication number
- JPS62155373A JPS62155373A JP60293253A JP29325385A JPS62155373A JP S62155373 A JPS62155373 A JP S62155373A JP 60293253 A JP60293253 A JP 60293253A JP 29325385 A JP29325385 A JP 29325385A JP S62155373 A JPS62155373 A JP S62155373A
- Authority
- JP
- Japan
- Prior art keywords
- bellows
- fluorine film
- raw pipe
- pipe
- raw
- 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
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 30
- 239000011737 fluorine Substances 0.000 title claims abstract description 30
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000012530 fluid Substances 0.000 abstract description 7
- 239000000853 adhesive Substances 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 238000000465 moulding Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 150000002221 fluorine Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- -1 alkalis Substances 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Diaphragms And Bellows (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（発明の利用分野）
本発明は、伸縮管継手やフレキシブル継手に用いられる
フッ素膜付ベローズの形成方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to a method for forming a fluorine-coated bellows used in expansion pipe joints and flexible joints.
（従来技術）
伸縮管継手やフレキシブル継手は、配管等が熱膨張や曲
げ荷重を受けた場合にこれらを吸収する役割を果たすも
ので、蛇腹形状のべＩＪ−ズが多用されている。(Prior Art) Expansion pipe joints and flexible joints play the role of absorbing thermal expansion and bending loads when pipes are subjected to them, and bellows-shaped IJ-beams are often used.
このべＯ−ズは、ステンレス等の金属材料が使用されて
おり、内部流体による化学的作用や流体の粘着を防止゛
するため、酸、アルカリ、薬品、純水９食品等の配管に
フッ素製のものやベローズ内面にフッ素コーティングを
施こしたものが使われている。フッ素は、前述の他にも
耐候性や電気的特性にも優れ、種々の利点を有している
。These bells are made of metal materials such as stainless steel, and are made of fluorine for piping for acids, alkalis, chemicals, pure water, and food, etc., to prevent chemical effects caused by internal fluids and fluid adhesion. Bellows with fluorine coating on the inner surface are used. In addition to the above, fluorine has various other advantages such as excellent weather resistance and electrical properties.
（発明が解決しようとする問題点）
ところが十分な耐圧性を持たせるには、ベローズを厚肉
にしなければならない。しかし、フッ素樹脂は素材単価
が高く、厚肉のベローズ全体をフッ素製にすると、惨め
で高価となる難点がある。(Problems to be Solved by the Invention) However, in order to have sufficient pressure resistance, the bellows must be made thick. However, fluororesin has a high material cost, and if the entire thick-walled bellows is made of fluorine, it will be miserable and expensive.
一方、フッ素を吹付は法によってベローズの内面にコー
ティングした場合、コストの点では有利であるが、ピン
ホールが発生し易く、べ【」−ズの伸縮や曲げによって
フッ素膜の剥離を生じたり、複雑な形状の部分には均一
の膜厚形成や適用自体が困難である。On the other hand, when coating the inner surface of the bellows with fluorine by spraying, it is advantageous in terms of cost, but pinholes are likely to occur, and the fluorine film may peel off due to expansion/contraction or bending of the bellows. It is difficult to form a uniform film thickness or apply it to parts with complex shapes.
（発明の目的）
本発明は、かかる事情に鑑みてなされたものであり、そ
の目的は、複雑な形状の部分にも膜厚の一定なフッ素膜
を形成でき、しかも剥離やピンホールの生じないフッ素
膜付べＯ−ズの形成方法を提供するこ、とにある。(Object of the Invention) The present invention has been made in view of the above circumstances, and its purpose is to form a fluorine film with a constant thickness even on parts with complex shapes, and without causing peeling or pinholes. An object of the present invention is to provide a method for forming a fluorine film-coated O-Z.
（目的を達成するための手段）
上記目的を達成するため、本発明では、べＯ−ズ用素管
の内面に２軸延伸性のフッ素フィルム接着した後、この
素管をベローズ形状に成形加工する構成としている。(Means for achieving the object) In order to achieve the above object, in the present invention, a biaxially stretchable fluorine film is bonded to the inner surface of a base tube for bellows, and then this base tube is formed into a bellows shape. It is configured to do this.
（作用）
上記接着手段の採用によってフッ素フィルムは確実にベ
ローズ内面に接着され、２軸延伸性によってベローズ成
形後もフッ素フィルムの膜厚は均一になり、ピンホール
も発生しない。また、素管の段階でフィルム接着するか
ら、？！２雑な形状への適合という問題もなくなる。(Function) By employing the above adhesive means, the fluorine film is reliably adhered to the inner surface of the bellows, and due to its biaxial stretchability, the film thickness of the fluorine film is uniform even after the bellows is formed, and pinholes do not occur. Also, since the film is bonded at the stage of making the tube, isn't it? ! 2 The problem of adapting to complicated shapes is also eliminated.
（実施例）
第１図には、本発明の形成方法が適用されたベローズ形
の管継手１０が示されている。この管継手１０は、べＯ
−ズ１１、フランジ１２、端管１３及びブレード１４か
ら構成されている。(Example) FIG. 1 shows a bellows-shaped pipe joint 10 to which the forming method of the present invention is applied. This pipe joint 10 is
- It consists of a lens 11, a flange 12, an end tube 13 and a blade 14.
ベローズ１１は、蛇腹形状のステンレスバイブで、配管
からの伸縮力やたわみを吸収する。ベローズの両端は直
管形状で、その端部１５は重ねられた状態でフランジ１
２の外面に圧接している。The bellows 11 is a bellows-shaped stainless steel vibrator that absorbs expansion and contraction force and deflection from the piping. Both ends of the bellows are in the shape of a straight pipe, and the end portions 15 are overlapped with the flange 1.
It is pressed against the outer surface of 2.
フランジ１２には溶接によって円筒形の端管が固着され
、外側には配管連結用の孔１２ａが穿設されている。ま
た、フランジ１２は、ベローズ１１の端部１５と山部１
６とで挟持され、端管１３はベローズ直管部と２個のブ
レード締付はリング１７ａ、１７ｂで挾持されている
７ランジ１２の端面及びベローズ内面には、フッ素樹脂
製のブシュ１８が加熱圧着されており、このブシュ１８
はフランジ部分のガスケットを兼ねている。A cylindrical end tube is fixed to the flange 12 by welding, and a hole 12a for connecting a pipe is bored on the outside. Further, the flange 12 has an end portion 15 of the bellows 11 and a peak portion 1 of the bellows 11.
6, the end pipe 13 is a bellows straight pipe part, and the two blades are clamped by rings 17a and 17b.7 The end face of the flange 12 and the inner surface of the bellows are heated by a fluororesin bushing 18. This bush 18 is crimped.
also serves as a gasket for the flange part.
ベローズ１１の外面は、保護用のブレード１４で被覆さ
れ、ブレード１４は細長いステンレス製の帯板を編んで
形成される。このブレード１４は端管１３の外周に締付
はリング１７ａ、１７ｂによって固定されている。管継
手１０の使用に際しては、ブレード１４の外面に防食テ
ープや断熱材料が巻装されることもある。The outer surface of the bellows 11 is covered with a protective blade 14, and the blade 14 is formed by knitting an elongated stainless steel strip. This blade 14 is fixed to the outer periphery of the end tube 13 by tightening rings 17a and 17b. When the pipe joint 10 is used, the outer surface of the blade 14 may be wrapped with anticorrosion tape or a heat insulating material.
ベローズ１１の内面には、接着剤１９によってフッ素フ
ィルム２０が晶付けられている。このフッ素フィルム２
０は、化学的に不活性の特性を有し、ステンレス製のベ
ローズ１１を内部流体から保護する役割を果たす。また
、内部流体がベローズ内面に付着するのを防止すると共
に、流体も汚染されることがない等、種々の利点を有す
る。更に、管継手１０の耐圧性は、ステンレス製のベロ
ーズ１１及びブレード１３によって確保される。A fluorine film 20 is crystallized on the inner surface of the bellows 11 using an adhesive 19. This fluorine film 2
0 has chemically inert properties and serves to protect the stainless steel bellows 11 from internal fluids. Further, it has various advantages such as preventing the internal fluid from adhering to the inner surface of the bellows and preventing the fluid from being contaminated. Furthermore, the pressure resistance of the pipe joint 10 is ensured by the bellows 11 and blade 13 made of stainless steel.
このフッ素フィルム２０は、第２図に示づようにベロー
ズ成形前の素管１１ａの段階で接着剤１９によって素管
１１ａの内面に貼付けられる。このため、蛇腹形状のベ
ローズ１１に貼付けるのと比べて、フッ素フィルム２０
の形成は容易に行なえる。As shown in FIG. 2, this fluorine film 20 is attached to the inner surface of the raw tube 11a with an adhesive 19 at the stage of the raw tube 11a before bellows molding. For this reason, the fluorine film 20
can be easily formed.
次いで、この素管１１ａを第３図に示すようにベローズ
形状に成形加工する。この図において、素管１１ａの一
端は、栓２１によって閉鎖され、栓２１の外面はラム２
２によって押圧支持されている。また、素管１１ａの内
部には、円柱形の芯金２３が挿入され、芯金２３の中央
には軸方向を貫通する孔２４が形成されている。Next, this raw pipe 11a is formed into a bellows shape as shown in FIG. In this figure, one end of the raw pipe 11a is closed by a stopper 21, and the outer surface of the stopper 21 is connected to the ram 2.
2 is pressed and supported. Further, a cylindrical core metal 23 is inserted into the interior of the raw pipe 11a, and a hole 24 is formed in the center of the core metal 23, passing through the core metal 23 in the axial direction.
一方、素管１１ａの外面には、−・対の金型２５゜２６
が当接し、各金型２５．２６には、対向して切欠き２７
．２８が設けられている。On the other hand, on the outer surface of the raw pipe 11a, a pair of molds 25°26
are in contact with each other, and each mold 25, 26 has a notch 27 facing oppositely.
．． 28 are provided.
従って、第３図の状態で芯金２３の孔２４から高圧流体
を通し、素管１１ａの内部を加圧すると、想像線で示す
ように＊ａ外面が盛上がる。次に、金型２６を図中左側
に移動させると、素管１１ａの外面に１個の山が形成さ
れる。あとは、金型２５．２６及び芯金２３の位置を１
ピツチずらして、前述の動作を繰返すと、蛇腹形状のＵ
形ベローズ１１が完成する。Therefore, when high-pressure fluid is passed through the hole 24 of the core metal 23 to pressurize the inside of the raw tube 11a in the state shown in FIG. 3, the outer surface *a is raised as shown by the imaginary line. Next, when the mold 26 is moved to the left side in the figure, one mountain is formed on the outer surface of the raw tube 11a. After that, the positions of the mold 25, 26 and the core metal 23 are set to 1.
If you repeat the above operation by shifting the pitch, you will see a bellows-shaped U.
The shaped bellows 11 is completed.
なお、前記中をΩ形にするには、素管１１ａを軸方向に
所定長さだけ圧縮する工程を加えればよい。Note that in order to make the inside into an Ω shape, a step of compressing the raw pipe 11a by a predetermined length in the axial direction may be added.
このときフッ素フィルム２０は、接着剤１９によってベ
ローズ１１の内面に強固に貼付けられているから、成形
加工時に剥離するおそれはない。At this time, since the fluorine film 20 is firmly attached to the inner surface of the bellows 11 by the adhesive 19, there is no risk of it peeling off during the molding process.
また、フッ素フィルム２０には、２＠延伸性、即ら縦横
に延伸性を有するものを用いて、ベローズ成形時にフィ
ルム２０が均等に延びるようにする。Further, the fluorine film 20 is made of a film having 2@stretchability, that is, has stretchability in the vertical and horizontal directions, so that the film 20 can be stretched evenly during bellows molding.
この構成により、フッ素フィルム１６は成形後に蛇腹形
状加工を行なってもその内周面に沿って分布可能となり
、ピンホール、亀裂等が発生することもなくなる。With this configuration, even if the fluorine film 16 is processed into a bellows shape after molding, it can be distributed along the inner peripheral surface thereof, and pinholes, cracks, etc. will not occur.
尚、第３図に示したベローズ成形法は、−例であって他
の成形手段も採用可能である。Note that the bellows molding method shown in FIG. 3 is just an example, and other molding means can also be employed.
（発明の効果）
以上詳述したように、本発明では、ベローズ用素管の内
面に２軸延伸性のフッ素フィルムを接着した後、木管を
ベローズ形状に成形加工する構成としたから、剥離、ビ
ンボール及び亀裂の生じない均一なフッ素膜をベローズ
内面に形成することができる。(Effects of the Invention) As described in detail above, in the present invention, a biaxially stretchable fluorine film is bonded to the inner surface of a bellows material pipe, and then the wood pipe is formed into a bellows shape. A uniform fluorine film free from bubbles and cracks can be formed on the inner surface of the bellows.
第１図は、内面にフッ素フィルムが形成されたベローズ
形管継手の一部縦断面図、第２図はフッ素フィルム接着
工程の縦断面図、第３図はベローズ成形工程の縦断面図
である。
１０・・・ベローズ形管継手、１１・・・ベローズ、１
１ａ・・・素管、１９・・・接着剤、２０・・・フッ素
フィルム。Fig. 1 is a partial longitudinal cross-sectional view of a bellows-type pipe joint with a fluorine film formed on the inner surface, Fig. 2 is a longitudinal cross-sectional view of the fluorine film bonding process, and Fig. 3 is a longitudinal cross-sectional view of the bellows forming process. . 10...Bellows type pipe joint, 11...Bellows, 1
1a...Made pipe, 19...Adhesive, 20...Fluorine film.
Claims (1)
接着した後、この素管をベローズ形状に成形加工するこ
とを特徴とするフッ素膜付ベローズの形成方法。A method for forming a bellows with a fluorine film, which comprises bonding a biaxially stretchable fluorine film to the inner surface of a blank tube for bellows, and then forming the tube into a bellows shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60293253A JPH0637935B2 (en) | 1985-12-27 | 1985-12-27 | Method for forming bellows with fluorine film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60293253A JPH0637935B2 (en) | 1985-12-27 | 1985-12-27 | Method for forming bellows with fluorine film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62155373A true JPS62155373A (en) | 1987-07-10 |
| JPH0637935B2 JPH0637935B2 (en) | 1994-05-18 |
Family
ID=17792428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60293253A Expired - Lifetime JPH0637935B2 (en) | 1985-12-27 | 1985-12-27 | Method for forming bellows with fluorine film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0637935B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01112078A (en) * | 1987-10-26 | 1989-04-28 | Eagle Ind Co Ltd | Manufacture of metallic bellows |
| JP2012177334A (en) * | 2011-02-25 | 2012-09-13 | Mitsubishi Heavy Ind Ltd | Rotor cooling air supply pipe |
-
1985
- 1985-12-27 JP JP60293253A patent/JPH0637935B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01112078A (en) * | 1987-10-26 | 1989-04-28 | Eagle Ind Co Ltd | Manufacture of metallic bellows |
| JP2012177334A (en) * | 2011-02-25 | 2012-09-13 | Mitsubishi Heavy Ind Ltd | Rotor cooling air supply pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0637935B2 (en) | 1994-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5199153A (en) | Method for making a flanged pipe length having a lining of plastic material | |
| JPS6242826A (en) | Manufacture of composite tube | |
| CN1012209B (en) | Method for connecting composite pipes | |
| KR100250347B1 (en) | Tube connector consisting of polyolefin and connection method | |
| EP0040893A1 (en) | Method and apparatus for applying in a closely fitting way a covering sheet on a rigid cylinder for obtaining a printing cylinder | |
| KR20010075339A (en) | Insulation module, system and method for installation and manufacture | |
| GB2136524A (en) | Reinsulation of pipe joints | |
| JPS62155373A (en) | Forming method for bellows with fluorine film | |
| JP3943003B2 (en) | Manufacturing method of multi-layer coated metal curved pipe | |
| US20100154977A1 (en) | Method for tightly joining two end sections of corrugated pipes and device for carrying out this method | |
| FI60624C (en) | FOERFARANDE FOER RETABLERING AV ISOLERINGEN VID SKARVNING AV KABLAR SPECIELLT HOEGSPAENNINGSKABLAR | |
| KR102584743B1 (en) | Corrugated steel pipe with minimal product damage | |
| KR870003753Y1 (en) | Rigid connection pipe of synthetic resin wave pipe | |
| KR200207753Y1 (en) | Device for coupling of corrugated steel pipe | |
| JPS59176018A (en) | Connecting method of plastic pipe | |
| US2730769A (en) | Method for making thermal insulated pipe | |
| SU1762070A1 (en) | Detachable flange joint of plastic cylindrical pipes | |
| JP3143834B2 (en) | Piping joint structure | |
| JPS5852092Y2 (en) | heat shrinkable tube | |
| JPH0473489A (en) | Tube jointing method | |
| KR20030055941A (en) | A Method and Device for Forming of Multi-Pipe | |
| JP2951981B2 (en) | Sheet for coating | |
| JP2001099379A (en) | Spiral corrugated pipe elbow and manufacturing method thereof | |
| JPH06327611A (en) | Manufacturing method of covering tube for endoscope | |
| JPS60155086A (en) | Method of mounting clamping member in joint section of pipe body and joint structure of pipe body |