JPH0193697A - Method of connecting composite pipe - Google Patents
Method of connecting composite pipeInfo
- Publication number
- JPH0193697A JPH0193697A JP24861887A JP24861887A JPH0193697A JP H0193697 A JPH0193697 A JP H0193697A JP 24861887 A JP24861887 A JP 24861887A JP 24861887 A JP24861887 A JP 24861887A JP H0193697 A JPH0193697 A JP H0193697A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- melting
- joint
- composite
- core member
- 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
- 239000002131 composite material Substances 0.000 title claims description 32
- 238000000034 method Methods 0.000 title claims description 14
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 18
- 239000000057 synthetic resin Substances 0.000 claims abstract description 18
- 239000011162 core material Substances 0.000 claims description 14
- 229920001169 thermoplastic Polymers 0.000 claims description 9
- 239000004416 thermosoftening plastic Substances 0.000 claims description 9
- 239000011247 coating layer Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract description 17
- 239000012530 fluid Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract 6
- 238000002844 melting Methods 0.000 abstract 6
- 150000001875 compounds Chemical class 0.000 abstract 5
- 239000010410 layer Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- -1 polyethylene Polymers 0.000 description 6
- 239000002033 PVDF binder Substances 0.000 description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000754 Wrought iron Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、芯材を挟んでその外面及び内面に熱可塑性合
成樹脂の被覆層を有する複合管の接続方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for connecting composite pipes having a core material sandwiched therebetween and a coating layer of thermoplastic synthetic resin on the outer and inner surfaces thereof.
（従来の技術）
薬液や純水輸送用の管材には、耐蝕性、耐薬品性の点か
らポリ弗化ビニリデンやポリエチレン、ポリプロピレン
等のポリオレフィンが使用されているが、コストダウン
や強度向上等の為、要地の材質、例えば金属等を、中間
層即ち芯材として複合管とすることが行われている。(Conventional technology) Polyolefins such as polyvinylidene fluoride, polyethylene, and polypropylene are used for pipe materials for transporting chemical solutions and pure water due to their corrosion and chemical resistance. For this reason, composite pipes are made of important materials, such as metal, as an intermediate layer or core material.
（考案が解決しようとする問題点）
上記のような複合管を管継手と接続する場合に、中間層
が接続部に於いて管路に露出されていると、流体を汚染
するおそれがあるという問題点があった。(Problems to be solved by the invention) When connecting a composite pipe as described above with a pipe joint, if the intermediate layer is exposed to the pipe line at the connection part, there is a risk of contaminating the fluid. There was a problem.
（問題点を解決するための手段）
本発明複合管の接続方法は、前記従来技術の問題点を解
消する為になされたものであって、芯材を挟んでその外
面及び内面に熱可塑性合成樹脂の被覆層を有する複合管
と管受口を有する管継手との接続方法であって、少なく
とも管受口を複合管の被覆層と同材質の熱可塑性合成樹
脂により形成した管継手を用い、接続するに際して各々
の接合部を加熱し、溶融軟化状態にして、嵌挿接続する
と共に該溶融軟化状態となった合成樹脂により、複合管
の芯材の端面を包み込んだ状態で一体に融着することを
特徴とする複合管の接続方法をその要旨とするものであ
る。(Means for Solving the Problems) The method for connecting composite pipes of the present invention has been made to solve the problems of the prior art, and consists of thermoplastic composites on the outer and inner surfaces of the core material. A method for connecting a composite pipe having a resin coating layer and a pipe joint having a pipe socket, the pipe joint having at least the pipe socket formed of a thermoplastic synthetic resin of the same material as the coating layer of the composite pipe, When connecting, each joint is heated to melt and soften, and as they are inserted and connected, the melted and softened synthetic resin wraps the end face of the core material of the composite pipe and fuses them together. The gist of this invention is a method for connecting composite pipes characterized by the following.
本発明に於いて、熱可塑性合成樹脂としては、ポリ弗化
ビニリデンやポリエチレン、ポリプロピレン等のポリオ
レフィンが使用でき、中間層としては、耐熱性ポリ塩化
ビニル、アルミニウム、鍛鉄等が使用できる。In the present invention, polyvinylidene fluoride, polyethylene, polyolefin such as polypropylene can be used as the thermoplastic synthetic resin, and heat-resistant polyvinyl chloride, aluminum, wrought iron, etc. can be used as the intermediate layer.
（作用）
本発明複合管の接続方法は、管継手と複合管との接合部
を加熱し、溶融軟化状態にして、嵌挿接続すると共に該
溶融軟化状態となった合成樹脂により、複合管の内面被
覆層と管受口の接続面とで複合管の接続部に於ける芯材
の端面を包み込んだ状態で一体に融着するので、芯材が
露出することがない。(Function) The method of connecting a composite pipe of the present invention is to heat the joint between a pipe joint and a composite pipe to melt and soften the joint, and then insert and connect the composite pipe using the synthetic resin that has become melted and softened. Since the inner coating layer and the connection surface of the tube socket wrap and fuse together the end surface of the core material at the connection portion of the composite pipe, the core material is not exposed.
（実施例）
図面は、本発明接続方法の一実施例を示すものであって
、第１図に於いて、１は、耐熱性硬質ポリ塩化ビニルか
らなる芯材１１の外面及び内面の両側にポリ弗化ビニリ
デンからなる内層１２と外Ｎ１３とが同時押出法によっ
て成形された複合管であり、第２図に於いて、２は、全
体がポリ弗化ビニリデンからなり射出成形法により成形
された管継手であって、内面略中央に環状リプが突設さ
れてストッパー２１が形成され、該ストッパー２１を境
にして左右に管受口２２．２２が形成され、該管受口２
２は外側に向けて拡径され、テーパが付されている。(Embodiment) The drawings show an embodiment of the connection method of the present invention, and in FIG. It is a composite tube in which an inner layer 12 made of polyvinylidene fluoride and an outer layer 13 are molded by a co-extrusion method, and in FIG. 2, 2 is made entirely of polyvinylidene fluoride and molded by an injection molding method. It is a pipe joint, and a stopper 21 is formed by protruding an annular lip approximately at the center of the inner surface, and pipe sockets 22 and 22 are formed on the left and right sides of the stopper 21, and the pipe sockets 2
2 is expanded in diameter toward the outside and is tapered.
第１図に示した複合管１の一端を第２図に示した管継手
２の一方の受口２２に嵌挿して接続するには、各々の接
合部を先ず加熱する必要が有り、その為には第３図に示
すような加熱型６を使用する。同図に於いて板状のシー
ズヒータ３の一側にはアルミニウム又は鉄よりなり表面
にポリテトラフルオロエチレンの被覆が施された管加熱
型４が取着され、他の一側には同じくアルミニウム又は
鉄よりなり表面にポリテトラフルオロエチレンの被覆が
施された管継手加熱型５が取着されており、シーズヒー
タ３に埋設された図示しないニクロム線に通電すれば、
管加熱型４と管継手加熱型５とが熱伝導により所定温度
に加熱されるようなされている。管加熱型４の円形凹陥
部４１の内周に沿って設けられた環状の凹溝４２に複合
管ｌを、管継手加熱型５の略円柱状突起５１に管継手２
の受口２２を夫々挿嵌し、複合管１の接合部（図面に於
いて管加熱型４と接した部分）１４及び管継手２の接合
部２３（図面に於いて管継手加熱型５と接した部分）を
略同時に２６０乃至２７０°Ｃで５乃至２０秒加熱して
、各接合部１４及び２３に於ける合成樹脂を溶融軟化状
態にした後、両者を管加熱型４及び管継手加熱型５から
離脱させ、次いで第４図に示すように複合管１を管継手
２に嵌挿する。このとき、該嵌挿時の押圧力と合成樹脂
同士の相溶性により、両者を第４図に示すように一体に
融着させた。In order to connect one end of the composite pipe 1 shown in Fig. 1 to one socket 22 of the pipe joint 2 shown in Fig. 2, it is necessary to first heat each joint. For this purpose, a heating mold 6 as shown in FIG. 3 is used. In the figure, a tube heating type 4 made of aluminum or iron and coated with polytetrafluoroethylene on the surface is attached to one side of the plate-shaped sheathed heater 3, and a tube heating type 4 made of aluminum or iron is attached to the other side. Alternatively, if a pipe joint heating type 5 made of iron and whose surface is coated with polytetrafluoroethylene is attached, and a nichrome wire (not shown) buried in the sheathed heater 3 is energized,
The tube heating mold 4 and the pipe joint heating mold 5 are heated to a predetermined temperature by thermal conduction. The composite pipe 1 is inserted into the annular groove 42 provided along the inner circumference of the circular concave portion 41 of the pipe heating mold 4, and the pipe fitting 2 is inserted into the substantially cylindrical protrusion 51 of the pipe joint heating mold 5.
Insert the sockets 22 of the composite pipe 1 (the part in contact with the pipe heating type 4 in the drawing) 14 and the joint 23 of the pipe fitting 2 (the part in contact with the pipe heating type 5 in the drawing). After heating the synthetic resin at 260 to 270°C for 5 to 20 seconds at approximately the same time to melt and soften the synthetic resin at each joint 14 and 23, both are heated by the tube heating mold 4 and pipe joint heating. It is removed from the mold 5, and then the composite pipe 1 is inserted into the pipe joint 2 as shown in FIG. At this time, due to the pressing force during the insertion and the compatibility of the synthetic resins, they were fused together as shown in FIG. 4.
複合管１の外層１３は管継手２の管受口２２の内面に融
着されると共に、一部止まり２１の方に押し遣られた管
受口２２等の溶融樹脂は該止まり２１により反転して内
方にはみ出し複合管１の内層１２と融着し、かくして芯
材１１は溶融軟化した合成樹脂により完全に包み込まれ
た状態となる。The outer layer 13 of the composite pipe 1 is fused to the inner surface of the pipe socket 22 of the pipe joint 2, and the molten resin in the pipe socket 22, etc., which has been partially pushed toward the stop 21, is reversed by the stop 21. The core material 11 protrudes inward and is fused to the inner layer 12 of the composite tube 1, and thus the core material 11 is completely surrounded by the melted and softened synthetic resin.
（発明の効果）
本発明複合管の接続方法は、芯材を挟んでその外面及び
内面に熱可塑性合成樹脂の被覆層を有する複合管と管受
口を有する管継手との接続方法であって、少なくとも管
受口を複合管の被覆層と同材質の熱可塑性合成樹脂によ
り形成した管継手を用い、接続するに際して各々の接合
部を加熱し、溶融軟化状態にして、嵌挿接続すると共に
該溶融軟化状態となった合成樹脂により、複合管の芯材
の端面を包み込んだ状態で一体に融着する方法であるか
ら、芯材が管路に露出せず、流体を汚染することがない
。(Effects of the Invention) A method for connecting a composite pipe of the present invention is a method for connecting a composite pipe having a coating layer of thermoplastic synthetic resin on its outer and inner surfaces with a core material in between, and a pipe joint having a pipe socket. , use a pipe joint whose at least the pipe socket is made of thermoplastic synthetic resin of the same material as the coating layer of the composite pipe, heat each joint to melt and soften it, and then fit and connect it. This method wraps the end face of the core material of the composite pipe in a molten and softened synthetic resin and fuses it together, so the core material is not exposed to the pipe line and does not contaminate the fluid.
又、実施例の如く熱可塑性合成樹脂が高価なものであっ
ても、芯材をサンドイッチした複合管とすることにより
安価に提供することができるという利点を有する。Further, even if the thermoplastic synthetic resin is expensive as in the embodiment, it has the advantage that it can be provided at a low cost by forming a composite tube with a sandwiched core material.
第１図は本発明複合管の接続方法の一実施例に用いる複
合管の一端部を示す断面図、第２図は同じく管継手を示
す断面図、第３図は同上の複合管と管継手の接合部を加
熱する手段の一例を示す断面図、第４図は本発明方法に
よって接続した状態を示す断面図である。FIG. 1 is a sectional view showing one end of a composite pipe used in an embodiment of the method for connecting composite pipes of the present invention, FIG. 2 is a sectional view similarly showing a pipe joint, and FIG. FIG. 4 is a cross-sectional view showing an example of a means for heating the joint portion of the two, and FIG.
Claims (1)
の被覆層を有する複合管と管受口を有する管継手との接
続方法であって、少なくとも管受口を複合管の被覆層と
同材質の熱可塑性合成樹脂により形成した管継手を用い
、接続するに際して各々の接合部を加熱し、溶融軟化状
態にして、嵌挿接続すると共に該溶融軟化状態となった
合成樹脂により、複合管の芯材の端面を包み込んだ状態
で一体に融着することを特徴とする複合管の接続方法。1. A method for connecting a composite pipe having a coating layer of thermoplastic synthetic resin on its outer and inner surfaces with a core material in between, and a pipe joint having a pipe socket, the method comprising at least connecting the pipe socket to the coating layer of the composite pipe. Using pipe joints made of thermoplastic synthetic resin of the same material, each joint is heated to melt and soften when connecting, and when the joints are inserted and connected, the composite pipe is made of the melted and softened synthetic resin. A method for connecting composite pipes, which is characterized in that the end faces of the core material are wrapped and fused together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24861887A JPH0730866B2 (en) | 1987-09-30 | 1987-09-30 | How to connect composite pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24861887A JPH0730866B2 (en) | 1987-09-30 | 1987-09-30 | How to connect composite pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0193697A true JPH0193697A (en) | 1989-04-12 |
| JPH0730866B2 JPH0730866B2 (en) | 1995-04-10 |
Family
ID=17180793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24861887A Expired - Lifetime JPH0730866B2 (en) | 1987-09-30 | 1987-09-30 | How to connect composite pipes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0730866B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030061922A (en) * | 2002-01-12 | 2003-07-23 | 안영진 | Coupling method and the device for sewerage pipe |
| US8531498B2 (en) | 2010-05-28 | 2013-09-10 | Kyocera Mita Corporation | Support structure and image forming apparatus |
-
1987
- 1987-09-30 JP JP24861887A patent/JPH0730866B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030061922A (en) * | 2002-01-12 | 2003-07-23 | 안영진 | Coupling method and the device for sewerage pipe |
| US8531498B2 (en) | 2010-05-28 | 2013-09-10 | Kyocera Mita Corporation | Support structure and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0730866B2 (en) | 1995-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4842305A (en) | Pipe joint connecting plastic pipes and process of making such joint | |
| US3506519A (en) | Method of making interlocked welded connections between thermoplastic articles | |
| US3788928A (en) | Method of forming a lap joint between tubular articles of thermoplastic material | |
| EP0467309B1 (en) | Joint sleeve and tube fitting | |
| JPH0193697A (en) | Method of connecting composite pipe | |
| JP4527869B2 (en) | Connection structure between piping material and fittings | |
| JPH06265082A (en) | Electric fusion coupling | |
| JP3265405B2 (en) | Manufacturing method of electrofusion joint | |
| JP4650708B2 (en) | Tube focusing body | |
| JP3749062B2 (en) | Thermoplastic tube connection method and connection structure | |
| JPH0347871Y2 (en) | ||
| JP2837730B2 (en) | Method for fusing thermoplastic resin tube and heater | |
| JP2721449B2 (en) | Electric fusion plastic pipe fittings | |
| JPH071074B2 (en) | Pipe fitting | |
| JPH07317984A (en) | Jointing method for pipe and joint, and pipe for piping | |
| JPS6255494B2 (en) | ||
| JPH02190694A (en) | Connecting method for tube made of polymer material | |
| JP2880040B2 (en) | Plastic pipe fittings | |
| JP2713533B2 (en) | Butt fusion method of thermoplastic resin molded article having tubular end | |
| JPH06147386A (en) | Connecting structure for two-layer pipe | |
| KR200360859Y1 (en) | Connecter of polyethylene | |
| JPH05318596A (en) | Connecting method for thermoplastic resin tube to electric fusion-bonding joint | |
| JPH0724719Y2 (en) | Electrofusion type synthetic resin branch pipe joint | |
| JP4422828B2 (en) | Fusion bonding method for resin pipes | |
| JPH08145268A (en) | Length adjusting coupling for electric fusion |