JPH1113980A - Synthetic resin pipe joint - Google Patents

Synthetic resin pipe joint

Info

Publication number
JPH1113980A
JPH1113980A JP9163769A JP16376997A JPH1113980A JP H1113980 A JPH1113980 A JP H1113980A JP 9163769 A JP9163769 A JP 9163769A JP 16376997 A JP16376997 A JP 16376997A JP H1113980 A JPH1113980 A JP H1113980A
Authority
JP
Japan
Prior art keywords
synthetic resin
joint
pipe
main body
joint body
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
Application number
JP9163769A
Other languages
Japanese (ja)
Inventor
Eiichi Sugiura
鋭一 杉浦
Kenji Kamata
建次 鎌田
Michio Uzawa
道雄 鵜沢
Masaaki Satake
正明 佐竹
Satoshi Shibazaki
智 芝崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP9163769A priority Critical patent/JPH1113980A/en
Publication of JPH1113980A publication Critical patent/JPH1113980A/en
Pending legal-status Critical Current

Links

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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/40—Applying molten plastics, e.g. hot melt
    • B29C65/42—Applying molten plastics, e.g. hot melt between pre-assembled parts
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52292—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being internal
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52297—Joining tubular articles involving the use of a socket said socket comprising slip-off prevention means
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3468—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/40—Applying molten plastics, e.g. hot melt
    • B29C65/42—Applying molten plastics, e.g. hot melt between pre-assembled parts
    • B29C65/425—Applying molten plastics, e.g. hot melt between pre-assembled parts characterised by the composition of the molten plastics applied between pre-assembled parts
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/97—Checking completion of joining or correct joining by using indications on at least one of the joined parts
    • B29C66/976—Checking completion of joining or correct joining by using indications on at least one of the joined parts by the use of an indicator pin, e.g. being integral with one of the parts to be joined

Abstract

PROBLEM TO BE SOLVED: To facilitate short-time joining between synthetic resin pipes by providing a cylindrical joint main body loaded over the pipe end outer surfaces of the synthetic resin pipes to be joined, filling a gap between the joint main body and the pipe end outer surface with a melted thermoplastic synthetic resin and hardening this. SOLUTION: For connecting together synthetic resin pipe ends 1 by using a joint main body 9 having flanges 9A in the inner peripheral surfaces of both ends and a stopper 9E having communication holes 9F,..., in the inner peripheral surfaces of the center part in an axial direction, first both pipe ends 1 are inserted into the joint main body 9. Then, from the filling hole 9C of the joint main body 9, a welded thermoplastic synthetic resin 11 is supplied through the communication hole 9F to fill a gap 10 without leaving any unfilled. parts. Air discharging at this time is carried out from an exhaust hole 9D. The supplied welded thermoplastic synthetic resin 11 is hardened with the passage of time, but a part of the outer surface of the pipe end 1 is melted to be integrated with the welded thermoplastic synthetic resin 11. Thus, the pipe ends 1 are joined together by the hardened thermoplastic synthetic resin 11 and the joint main body 9.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】この発明は、合成樹脂管の継
手構造、特に、製造コストが安価で、しかも合成樹脂管
同士を容易且つ短時間に接合することができる合成樹脂
管用継手に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure for a synthetic resin pipe, and more particularly to a joint for a synthetic resin pipe which is inexpensive to manufacture and which can join the synthetic resin pipes easily and in a short time. .

【０００２】[0002]

【従来の技術】従来、水道管等に使用されているポリエ
チレン樹脂管の接合継手として合成樹脂管用電気融着継
手がある。この合成樹脂管用電気融着継手は、図３に示
すように、両管端部１に跨がって装着されるポリエチレ
ン樹脂製の厚肉の筒状継手本体２と、継手本体２内に埋
設されたコイル状ニクロム線からなる通電発熱体３とを
有するものである。通電発熱体３には、ターミナル４を
介して電源５から電流が流される。電流は、コントロー
ラ６によって制御される。2. Description of the Related Art Conventionally, there is an electric fusion joint for a synthetic resin pipe as a joint for a polyethylene resin pipe used for a water pipe or the like. As shown in FIG. 3, the electric fusion joint for synthetic resin pipes is a thick tubular joint body 2 made of polyethylene resin which is attached across both pipe ends 1, and embedded in the joint body 2. And a heating element 3 made of a coiled nichrome wire. A current flows from the power supply 5 to the energizing heating element 3 via the terminal 4. The current is controlled by the controller 6.

【０００３】上述した従来継手によってポリエチレン樹
脂管端部１同士を接合するには、次のようにする。即
ち、管端部１の外表面を切削して酸化等により劣化した
部分を除去する。次いで、両管端部１に跨がって継手本
体２を装着する。そして、通電発熱体３に通電して、管
端部１の外周面と継手本体２の内周面とを加熱、溶融さ
せる。かくして、両管端部１が互いに融着し、接合され
る。In order to join the polyethylene resin pipe ends 1 by the above-mentioned conventional joint, the following is performed. That is, the outer surface of the pipe end 1 is cut to remove a portion degraded by oxidation or the like. Next, the joint main body 2 is mounted over both pipe ends 1. Then, electricity is supplied to the electric heating element 3 to heat and melt the outer peripheral surface of the pipe end 1 and the inner peripheral surface of the joint body 2. Thus, the two tube ends 1 are fused and joined together.

【０００４】なお、図４に示すように、継手本体２に
は、管端部１の外周面と継手本体２の内周面との溶融状
態を管理するためのインジケーター７が設けられてい
る。インジケーター７は、継手本体２に形成された貫通
孔８内に挿通された棒体からなっている。通電によって
管端部１の外周面と継手本体２の内周面とが溶融する
と、管端部１と継手本体２との接触部分の界面圧力が上
昇するので、インジケーター７が***する。この***量
を監視することによって、管端部１の外周面と継手本体
２の内周面との溶融状態を管理することができる。イン
ジケーター７が図５に示すように、継手本体２の表面よ
りも***したら、管端部１の外周面と継手本体２の内周
面とが完全に溶融したと判断して通電を中止する。[0004] As shown in FIG. 4, the joint body 2 is provided with an indicator 7 for managing the molten state of the outer peripheral surface of the pipe end 1 and the inner peripheral surface of the joint body 2. The indicator 7 is formed of a rod inserted into a through hole 8 formed in the joint body 2. When the outer peripheral surface of the pipe end 1 and the inner peripheral surface of the joint main body 2 are melted by energization, the interface pressure at the contact portion between the pipe end 1 and the joint main body 2 increases, so that the indicator 7 rises. By monitoring the amount of protrusion, the molten state of the outer peripheral surface of the pipe end 1 and the inner peripheral surface of the joint body 2 can be managed. When the indicator 7 rises above the surface of the joint main body 2 as shown in FIG. 5, it is determined that the outer peripheral surface of the pipe end 1 and the inner peripheral surface of the joint main body 2 are completely melted, and the energization is stopped.

【０００５】[0005]

【発明が解決しようとする課題】しかしながら、上述し
た従来の合成樹脂管用継手は、以下のような問題があっ
た。 通電発熱体が埋め込まれ、しかも、厚肉であるの
で、大口径になるほど継手本体２の製造原価が上昇す
る。 溶融に際して管端部１と継手本体２とを密着させる
必要があるが、このためにクランプ治具によって管端部
１を強固にクランプする必要があり、この作業に時間が
かかる。 通電を開始してから管端部１の外周面と継手本体２
の内周面とが加熱、溶融するのに時間がかかる。However, the above-mentioned conventional joint for a synthetic resin pipe has the following problems. Since the electric heating element is embedded and is thick, the manufacturing cost of the joint body 2 increases as the diameter increases. It is necessary to bring the pipe end 1 and the joint body 2 into close contact with each other at the time of melting. For this purpose, it is necessary to firmly clamp the pipe end 1 with a clamp jig, and this operation takes time. After energization, the outer peripheral surface of the pipe end 1 and the joint body 2
It takes time to heat and melt the inner peripheral surface.

【０００６】従って、この発明の目的は、製造コストが
安価で、しかも合成樹脂管同士を容易且つ短時間に接合
することができる合成樹脂管用継手を提供することにあ
る。SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a joint for a synthetic resin pipe which is inexpensive to manufacture and which can join synthetic resin pipes easily and in a short time.

【０００７】[0007]

【課題を解決するための手段】請求項１記載の発明は、
接合すべき合成樹脂管の管端外面に跨がって装着され
る、前記管端外面に当接するフランジが両端内周面に形
成された円筒状継手本体と、前記継手本体と前記管端外
面との間の空間内に溶融状態で充填され、固化した熱可
塑性合成樹脂とからなることに特徴を有するものであ
る。According to the first aspect of the present invention,
A cylindrical joint main body having flanges formed on both inner peripheral surfaces at both ends, the flanges being in contact with the outer end of the pipe end, which are mounted across the outer end of the synthetic resin pipe to be joined, and the joint body and the outer end of the pipe end And a solidified thermoplastic synthetic resin that is filled in a molten state in the space between them.

【０００８】請求項２記載の発明は、前記継手本体の一
端側に溶融した前記熱可塑性合成樹脂の充填孔が形成さ
れ、前記継手本体の他端側に排気孔が形成されているこ
とに特徴を有するものである。The invention according to claim 2 is characterized in that a filling hole for the molten thermoplastic synthetic resin is formed at one end of the joint body, and an exhaust hole is formed at the other end of the joint body. It has.

【０００９】請求項３記載の発明は、前記フランジの前
記管端外面との当接面には、ラビリンスが形成されてい
ることに特徴を有するものである。請求項４記載の発明
は、前記継手本体の軸線方向中央部の内周面には、前記
管端が当接する位置決め用ストッパーが突設され、前記
ストッパーには、前記空間内に充填される溶融した前記
熱可塑性合成樹脂が流入する連通孔が形成されているこ
とに特徴を有するものである。The invention according to claim 3 is characterized in that a labyrinth is formed on a contact surface of the flange with the outer surface of the pipe end. The invention according to claim 4 is characterized in that a positioning stopper for projecting the pipe end abuts on an inner peripheral surface at a central portion in the axial direction of the joint main body, and the stopper is filled in the space. A communication hole through which the thermoplastic synthetic resin flows is formed.

【００１０】[0010]

【発明の実施の形態】次に、この発明の合成樹脂管用継
手の一実施態様を、図面を参照しながら説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the joint for a synthetic resin pipe of the present invention will be described with reference to the drawings.

【００１１】図１は、管端に装着された、この発明の合
成樹脂管用継手の一実施態様を示す断面図、図２は、図
１の部分拡大図である。図１及び図２において、９は、
接合すべき合成樹脂管の管端１の外面に跨がって装着さ
れる円筒状継手本体である。継手本体９は、金属製又は
後述する熱可塑性合成樹脂の溶融温度（１８０℃）で軟
化しない合成樹脂製とする。継手本体９は、一体化され
た円筒形状のものでも、互いに結合可能な半円筒形状の
ものであっても良い。９Ａは、継手本体９の両端内周面
に形成されたフランジであり、管端１の外面に当接す
る。フランジ９Ａにおける管端１の外面との当接面に
は、図２に示すように、管端１の外面との水密性を高く
するためにラビリンス９Ｂが形成されている。９Ｃは、
継手本体９の一端側に設けられた、後述する溶融熱可塑
性合成樹脂の充填孔であり、９Ｄは、継手本体９の他端
側に形成された排気孔である。９Ｅは、継手本体９の軸
線方向中央部の内周面に突設されたストッパーであり、
その内径寸法は、管端１の内径寸法より若干大きい。ス
トッパー９Ｅは、継手本体９内に挿入される管端１の位
置決めをする。ストッパー９Ｅには、前記溶融熱可塑性
合成樹脂が流入する連通孔９Ｆが複数個、形成されてい
る。FIG. 1 is a cross-sectional view showing one embodiment of a joint for a synthetic resin pipe of the present invention mounted on a pipe end, and FIG. 2 is a partially enlarged view of FIG. In FIGS. 1 and 2, 9 is
This is a cylindrical joint main body that is attached across the outer surface of the tube end 1 of the synthetic resin tube to be joined. The joint body 9 is made of a metal or a synthetic resin that does not soften at a melting temperature (180 ° C.) of a thermoplastic synthetic resin described below. The joint body 9 may be of an integrated cylindrical shape or a semi-cylindrical shape that can be connected to each other. 9A are flanges formed on the inner peripheral surfaces of both ends of the joint main body 9, and abut against the outer surface of the pipe end 1. As shown in FIG. 2, a labyrinth 9B is formed on a contact surface of the flange 9A with the outer surface of the tube end 1 in order to increase water tightness with the outer surface of the tube end 1. 9C is
A filling hole for a molten thermoplastic synthetic resin, which will be described later, is provided at one end of the joint body 9, and 9 D is an exhaust hole formed at the other end of the joint body 9. 9E is a stopper protruding from the inner peripheral surface of the joint body 9 at the center in the axial direction.
The inner diameter is slightly larger than the inner diameter of the pipe end 1. The stopper 9E positions the pipe end 1 inserted into the joint body 9. A plurality of communication holes 9F into which the molten thermoplastic synthetic resin flows are formed in the stopper 9E.

【００１２】１０は、管端１と継手本体９との間に形成
された空間である。１１は、充填孔９Ｃから空間１０内
に充填される溶融ポリエチレン等の溶融熱可塑性合成樹
脂である。Reference numeral 10 denotes a space formed between the pipe end 1 and the joint body 9. Reference numeral 11 denotes a molten thermoplastic synthetic resin, such as molten polyethylene, which fills the space 10 through the filling hole 9C.

【００１３】以上のように構成されている、この発明の
合成樹脂管用継手によれば、以下のようにして、合成樹
脂管端１同士が互いに接続される。先ず、両管端１をこ
れらがストッパー９Ｅに当接するまで継手本体９内に挿
入する。このようにして、継手本体９を管端１に装着し
たら、継手本体９の充填孔９Ｃから溶融ポリエチレン等
の溶融熱可塑性合成樹脂１１を空間１０内に充填する。
溶融熱可塑性合成樹脂１１は、連通孔９Ｆを通って空間
１０内に隙間なく行き渡る。このときの空気抜きは、排
気孔９Ｄから行われる。空間１０内に充填された溶融熱
可塑性合成樹脂１１は、時間の経過と共に硬化するが、
管端１の外面も一部溶融して、溶融熱可塑性合成樹脂１
１と一体化する。従って、管端１は、硬化した熱可塑性
合成樹脂１１及び継手本体９によって互いに接合され
る。According to the joint for a synthetic resin pipe of the present invention configured as described above, the synthetic resin pipe ends 1 are connected to each other as follows. First, both pipe ends 1 are inserted into the joint body 9 until they come into contact with the stopper 9E. When the joint body 9 is attached to the pipe end 1 in this manner, the space 10 is filled with a molten thermoplastic synthetic resin 11 such as molten polyethylene through the filling hole 9C of the joint body 9.
The molten thermoplastic synthetic resin 11 spreads throughout the space 10 through the communication hole 9F without any gap. At this time, the air is vented from the exhaust hole 9D. The molten thermoplastic synthetic resin 11 filled in the space 10 cures with time,
The outer surface of the pipe end 1 is also partially melted, and the molten thermoplastic synthetic resin 1
Integrate with 1. Therefore, the pipe ends 1 are joined to each other by the cured thermoplastic synthetic resin 11 and the joint body 9.

【００１４】[0014]

【発明の効果】以上説明したように、この発明によれ
ば、接合すべき合成樹脂管の管端外面に跨がって装着さ
れる、前記管端外面に当接するフランジが両端内周面に
形成された円筒状継手本体と、前記継手本体と前記管端
外面との間の空間内に溶融状態で充填され、固化した熱
可塑性合成樹脂とから構成されているので、上述した従
来の合成樹脂管用継手と比べて、以下のような有用な効
果がもたらされる。 通電発熱体が不要であり、しかも、薄肉であるの
で、大口径であっても、継手本体の製造コストは、安価
で済む。 継手本体の空間内に溶融熱可塑性合成樹脂を流し込
むだけなので、管端を強固にクランプする必要がない。 熱可塑性合成樹脂を予め溶融させておくことによっ
て、管端接合時間を大幅に短縮することができる。As described above, according to the present invention, the flanges, which are attached across the outer surface of the tube end of the synthetic resin tube to be joined and which come into contact with the outer surface of the tube end, are provided on the inner peripheral surfaces at both ends. Since the formed cylindrical joint main body and the space between the joint main body and the pipe end outer surface are filled with a molten state and solidified thermoplastic synthetic resin, the conventional synthetic resin described above is used. The following useful effects are provided as compared with the pipe joint. Since the current-carrying heating element is unnecessary and thin, the manufacturing cost of the joint body can be reduced even with a large diameter. Since only the molten thermoplastic synthetic resin is poured into the space of the joint body, it is not necessary to firmly clamp the pipe end. By melting the thermoplastic synthetic resin in advance, the pipe end joining time can be significantly reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図１】管端に装着された、この発明の合成樹脂管用継
手の一実施態様を示す断面図である。FIG. 1 is a cross-sectional view showing one embodiment of a joint for a synthetic resin pipe of the present invention mounted on a pipe end.

【図２】図１の部分拡大図である。FIG. 2 is a partially enlarged view of FIG.

【図３】管端部に装着された、従来の合成樹脂管用継手
を示す断面図である。FIG. 3 is a cross-sectional view showing a conventional synthetic resin pipe joint attached to a pipe end.

【図４】管端部の外面と継手本体の内面との融着状態を
示す断面図である。FIG. 4 is a cross-sectional view showing a fusion state between an outer surface of a pipe end and an inner surface of a joint body.

【図５】インジケータの***を示す断面図である。FIG. 5 is a cross-sectional view showing a protrusion of the indicator.

【符号の説明】[Explanation of symbols]

１：管端 ２：継手本体 ３：通電発熱体 ４：ターミナル ５：電源 ６：コントローラ ７：インジケータ ８：貫通孔 ９：継手本体 ９Ａ：フランジ ９Ｂ：ラビリンス ９Ｃ：充填孔 ９Ｄ：排気孔 ９Ｅ：ストッパー ９Ｆ：連通孔 １０：空間 １１：溶融熱可塑性合成樹脂 1: pipe end 2: joint body 3: energizing heating element 4: terminal 5: power supply 6: controller 7: indicator 8: through hole 9: joint body 9A: flange 9B: labyrinth 9C: filling hole 9D: exhaust hole 9E: stopper 9F: communication hole 10: space 11: molten thermoplastic synthetic resin

───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐竹 正明 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 芝崎 智 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masaaki Satake 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Satoshi Shibazaki 1-2-1, Marunouchi, Chiyoda-ku, Tokyo, Japan Honko Co., Ltd.

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 接合すべき合成樹脂管の管端外面に跨が
って装着される、前記管端外面に当接するフランジが両
端内周面に形成された円筒状継手本体と、前記継手本体
と前記管端外面との間の空間内に溶融状態で充填され、
固化した熱可塑性合成樹脂とからなることを特徴とする
合成樹脂管用継手。1. A cylindrical joint body, which is mounted across the outer surface of a tube end of a synthetic resin tube to be joined and has flanges formed on inner peripheral surfaces at both ends, the flanges contacting the outer surface of the tube end, and the joint body And filled in a molten state in the space between the pipe end outer surface,
A joint for a synthetic resin pipe, comprising a solidified thermoplastic synthetic resin. 【請求項２】 前記継手本体の一端側に溶融した前記熱
可塑性合成樹脂の充填孔が形成され、前記継手本体の他
端側に排気孔が形成されていることを特徴とする、請求
項１記載の合成樹脂管用継手。2. The joint body according to claim 1, wherein a hole filled with the molten thermoplastic synthetic resin is formed at one end of the joint body, and an exhaust hole is formed at the other end of the joint body. The joint for a synthetic resin pipe described in the above. 【請求項３】 前記フランジの前記管端外面との当接面
には、ラビリンスが形成されていることを特徴とする、
請求項１又は２記載の合成樹脂管用継手。3. A labyrinth is formed on a contact surface of the flange with the outer surface of the tube end.
The joint for a synthetic resin pipe according to claim 1 or 2. 【請求項４】 前記継手本体の軸線方向中央部の内周面
には、前記管端が当接する位置決め用ストッパーが突設
され、前記ストッパーには、前記空間内に充填される溶
融した前記熱可塑性合成樹脂が流入する連通孔が形成さ
れていることを特徴とする、請求項１から３のうちの何
れか１つに記載された合成樹脂管用継手。4. A positioning stopper projecting from the inner peripheral surface of the joint body in the central portion in the axial direction with which the pipe end abuts, and the stopper is provided with the molten heat filled in the space. The joint for a synthetic resin pipe according to any one of claims 1 to 3, wherein a communication hole into which the plastic synthetic resin flows is formed.
JP9163769A 1997-06-20 1997-06-20 Synthetic resin pipe joint Pending JPH1113980A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9163769A JPH1113980A (en) 1997-06-20 1997-06-20 Synthetic resin pipe joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9163769A JPH1113980A (en) 1997-06-20 1997-06-20 Synthetic resin pipe joint

Publications (1)

Publication Number Publication Date
JPH1113980A true JPH1113980A (en) 1999-01-22

Family

ID=15780373

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9163769A Pending JPH1113980A (en) 1997-06-20 1997-06-20 Synthetic resin pipe joint

Country Status (1)

Country Link
JP (1) JPH1113980A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6415121B1 (en) * 1999-05-20 2002-07-02 Canon Kabushiki Kaisha Connecting method of resin material molded product, process cartridge and assembling method of process cartridge
US6654578B2 (en) * 2000-09-12 2003-11-25 Canon Kabushiki Kaisha Image forming apparatus to which a process cartridge having a part connecting member is detachably mountable, process cartridge having a part connecting member, and part connecting member
KR100889476B1 (en) 2008-12-03 2009-03-19 폴리텍 주식회사 Fusion bonded-type connector improving fusion bonded efficiency
CN107355626A (en) * 2017-07-19 2017-11-17 福建恒杰塑业新材料有限公司 A kind of polyolefin pipe emergency repair method
JP2020015212A (en) * 2018-07-25 2020-01-30 三井化学株式会社 Connecting pipe and method for manufacturing connecting pipe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6415121B1 (en) * 1999-05-20 2002-07-02 Canon Kabushiki Kaisha Connecting method of resin material molded product, process cartridge and assembling method of process cartridge
US6654578B2 (en) * 2000-09-12 2003-11-25 Canon Kabushiki Kaisha Image forming apparatus to which a process cartridge having a part connecting member is detachably mountable, process cartridge having a part connecting member, and part connecting member
KR100889476B1 (en) 2008-12-03 2009-03-19 폴리텍 주식회사 Fusion bonded-type connector improving fusion bonded efficiency
WO2010064832A2 (en) * 2008-12-03 2010-06-10 폴리텍(주) Fusion-type connection member with enhanced fusion performance
WO2010064832A3 (en) * 2008-12-03 2010-09-30 폴리텍(주) Fusion-type connection member with enhanced fusion performance
CN107355626A (en) * 2017-07-19 2017-11-17 福建恒杰塑业新材料有限公司 A kind of polyolefin pipe emergency repair method
JP2020015212A (en) * 2018-07-25 2020-01-30 三井化学株式会社 Connecting pipe and method for manufacturing connecting pipe

Similar Documents

Publication Publication Date Title
JPH0852805A (en) Method for welding plastic pipe and socket used therefor
EP1475218A1 (en) Fusion-worked product of resin members and production method therefor and method of fusing resin members
JPH0735879B2 (en) Coated exothermic wires for joints and sleeves and joints for joints
JPH1113980A (en) Synthetic resin pipe joint
KR101797719B1 (en) Electro-fusion apparatus for plastic pipe
US4806181A (en) Method for moulding a thermoplastics member with a fusion pad
JP2010216512A (en) Electrofusion joint
JPH10220676A (en) Electrically fused joint for synthetic resin pipe
JPH10246382A (en) Electrofusion joint for synthetic resin pipe
KR101818324B1 (en) Electro-fusion apparatus for transfer tube of fluid including chemical material
JPH1137374A (en) Electro-fusion type piping member and manufacture of electro-fusion type piping member
JPS61130695A (en) Electrically weldable joint element
JPH10160081A (en) Joint for synthetic resin pipe
JPH0739120B2 (en) Manufacturing method of welded joint
JP2721465B2 (en) Electric fusion plastic pipe fittings
JP7356509B2 (en) Electric fusion joints and connection methods
JPH10246381A (en) Electrofusion joint for synthetic resin pipe
JP2000161580A (en) Electric fusion joint
KR200344542Y1 (en) pipe coupler
JP2000213684A (en) Electrodeposited coupling
JP2516996Y2 (en) Electrofusion fittings
JPH09242970A (en) Electrically fused joint
JPH11287383A (en) Coil for electrofusion and joint and bulb
JPH09229280A (en) Two-layer fusion pipe joint and manufacture therefor
JPS63289393A (en) Plastic pipe joint