JPH10160081A - 合成樹脂管用継手 - Google Patents

合成樹脂管用継手

Info

Publication number
JPH10160081A
JPH10160081A JP8319697A JP31969796A JPH10160081A JP H10160081 A JPH10160081 A JP H10160081A JP 8319697 A JP8319697 A JP 8319697A JP 31969796 A JP31969796 A JP 31969796A JP H10160081 A JPH10160081 A JP H10160081A
Authority
JP
Japan
Prior art keywords
joint
main body
pipe
synthetic resin
joint main
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
JP8319697A
Other languages
English (en)
Inventor
Eiichi Sugiura
鋭一 杉浦
Kenji Kamata
建次 鎌田
Michio Uzawa
道雄 鵜澤
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 JP8319697A priority Critical patent/JPH10160081A/ja
Publication of JPH10160081A publication Critical patent/JPH10160081A/ja
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
    • B29C65/34—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
    • 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
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • 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
    • B29C66/01—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
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
    • 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
    • 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
    • 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
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52294—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being heated
    • 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
    • B29C66/52298—Joining tubular articles involving the use of a socket said socket being composed by several elements
    • 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
    • B29C66/63—Internally supporting the article during joining
    • B29C66/636—Internally supporting the article during joining using a support which remains in the joined object
    • 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
    • B29C66/972—Checking completion of joining or correct joining by using indications on at least one of the joined parts by extrusion of molten material
    • 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
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • 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
    • B29C65/34—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"
    • B29C65/3472—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 composition of the heated elements which remain in the joint
    • B29C65/3476—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 composition of the heated elements which remain in the joint being metallic
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • 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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

(57)【要約】 【課題】 安価で施工性に優れ、しかも、発熱体の断線
の恐れが少ない。 【解決手段】 樹脂管端の接合時に前記管端面間に挟ま
れる、前記管１と同一材質からなるリング板状継手本体
９と、継手本体９内に埋め込まれた通電発熱体１０と、
リング板状継手本体外に設けられた通電用ターミナル１
１とからなる。

Description

【発明の詳細な説明】
【０００１】
【発明の属する技術分野】この発明は、合成樹脂管用継
手、特に、安価で施工性および融着性に優れ、しかも、
発熱体の断線の恐れが少ない合成樹脂管用継手に関する
ものである。
【０００２】
【従来の技術】例えば、ガス管は、耐ガス腐食性に優れ
たポリエチレン樹脂からなっている。このようなポリエ
チレン樹脂管を互いに接合する場合、ポリエチレン樹脂
は、接着剤による接合が困難であるところから、従来、
以下のような手段が取られていた。 図３に示すように、ポリエチレン樹脂製の円筒状継
手本体２と、この継手本体２内に埋め込まれたニクロム
線等のコイル状発熱線３と、通電用ターミナル４とから
なる合成樹脂管用継手５内に接合すべきポリエチレン樹
脂管１の管端を挿入し、図４に示すように、発熱線３に
通電して、管１と継手本体２との接触部分を溶融させ、
これにより、図５に示すように、管１と継手５とを一体
化する。
【０００３】管１と継手本体２との接触部分の溶融状態
の管理は、継手本体２に挿入されたインジケーター６に
よって行う。即ち、通電によって管１と継手本体２との
接触部分が溶融すると、この接触部分の界面圧力が上昇
して、インジケーター６が隆起する。この隆起状態を監
視することによって、管１と継手本体２との溶融状態が
分かる。インジケーター６が図５に示すように、継手本
体２の表面よりも上に隆起したら、管１と継手本体２と
の接触部分が完全に溶融したと判断して、通電を停止す
る。この従来技術１は、ＥＦ（Electro Fusion）継手と
して、広く知られている。 図６に示すように、スリーブ７Ａの先端にフランジ
７Ｂが形成されたポリエチレン樹脂製の継手本体７を、
接合すべきポリエチレン樹脂管１の管端外面に融着し、
継手本体７のフランジ７Ｂ間にヒータ板８を挟んで、フ
ランジ７Ｂの接触部分を溶融させる。この後、ヒータ板
８を外し、溶融状態にあるフランジ７Ｂを互いに突き合
わせて融着する。この従来技術２は、特公昭６１−３４
３７５号公報に開示されている。
【０００４】
【発明が解決しようとする課題】しかしながら、上述し
た従来継手１は、以下のような問題を有していた。 継手本体２内にポリエチレン樹脂管１の管端を挿入
するので、継手本体２の長さが長くなり、接続すべき管
が大径になるほど大型化する。従って、施工性が悪く、
且つ、コスト高となる。 管端の加熱範囲が広いので、発熱線３の巻数も多く
なる。従って、断線の確率が高くなる。
【０００５】一方、上述した従来継手２は、以下のよう
な問題を有していた。 ヒータ板８によってフランジ７Ｂを加熱溶融させる
ものであるので、熱のコントロールが正確に行えない。
従って、融着不良が生じやすい。
【０００６】従って、この発明の目的は、安価で施工性
および融着性に優れ、しかも、発熱体の断線の恐れが少
ない合成樹脂管用継手を提供することにある。
【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と、前記合成樹脂管と同一
材質からなる継手本体とを互いに融着させて、前記管端
同士を接合するための合成樹脂管用継手において、前記
継手本体は、リング板状に形成され、前記リング板状継
手本体は、前記管端の接合時に前記管端面間に挟まれ、
前記リング板状継手本体内には、通電によって発熱する
通電発熱体が埋め込まれ、前記リング板状継手本体外に
は、前記通電発熱体に通電するためのターミナルが設け
られていることに特徴を有するものである。
【０００８】請求項２記載の発明は、前記通電発熱体
は、通電によって発熱する通電発熱繊維からなっている
ことに特徴を有するものである。請求項３記載の発明
は、前記リング板状継手本体内には、前記合成樹脂管の
前記管端内に嵌め込まれるスリーブが設けられているこ
とに特徴を有するものである。
【０００９】請求項４記載の発明は、前記リング板状継
手本体外面には、前記リング板状継手本体より厚い肉厚
を有する少なくとも１つのサドルが固定され、前記サド
ルの１つに、前記ターミナルが取り付けられていること
に特徴を有するものである。
【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。
【００１１】図１は、この発明の合成樹脂管用継手を示
す正面図、図２は、この発明の合成樹脂管用継手を示す
側面図である。図１および図２において、９は、ポリエ
チレン樹脂製の継手本体であり、接合すべきポリエチレ
ン樹脂管１の肉厚と同一幅寸法を有するリング板状に形
成されている。図１に示すように、リング板状継手本体
９は、パッキングと同様に管端の接合時に管端面間に挟
まれる。
【００１２】１０は、リング板状継手本体９内に埋め込
まれた、通電によって発熱する通電発熱体である。通電
発熱体１０として、優れた柔軟性および耐久性を有し、
ニクロム線とほぼ同等の電気熱特性を有する公知の通電
発熱繊維を使用すると良い。この通電発熱繊維は、マイ
クロメタルファイバーとアラミド繊維とからなってい
る。通電発熱体１０は、継手本体９内に、ワンターン、
蚊取り線香状、コイル状あるいはジグザグ状等に埋め込
まれている。なお、通電発熱体１０は、通電発熱繊維以
外に、通常のニクロム線等であっても良い。
【００１３】１１は、一対のターミナルであり、通電発
熱体１０と電気的に接続されている。１２は、リング板
状継手本体９の外面に固定された、リング板状継手本体
９より厚い肉厚を有するサドルである。サドル１２は、
後述するスリーブ１４を設けない場合の管端の位置決め
の作用を有する。従って、サドル１２は、この図のよう
に１つでも良いが、複数個設けた方が管端の位置決めが
行いやすい。一対のターミナル１１は、１つのサドル１
２に取り付けられている。なお、サドル１２の高さを可
能な限り低くして、継手本体９の外面からの突出部分を
少なくすれば、推進工法により管を地中に敷設する場合
にも、この発明の合成樹脂管用継手を使用することがで
きる。１３は、管端面と通電発熱体１０との接触部分の
溶融状態を把握するためのインジケーターであり、前述
した従来技術１と同じ構造のものである。
【００１４】１４は、リング板状継手本体９内に嵌め込
まれた、薄肉ステンレス鋼板等の不錆性金属板からなる
スリーブであり、接合すべきポリエチレン樹脂管１の管
端内に嵌め込まれる。このスリーブ１４は、必須の構成
ではないが、管の位置決めが容易に行え、しかも、溶融
部分が押し付けられることにより生じる管端内面の盛り
上がりを防止できるといった機能を有している。
【００１５】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、次のようにしてポリエチレ
ン樹脂管１が接合される。先ず、スリーブ１４をガイド
にして管端間にリング板状継手本体９を挟み込む。そし
て、ターミナル１１に電源コネクター（図示せず）を嵌
め込んで、通電発熱体１０に通電する。これによって、
継手本体９が加熱溶融し、管端と融着するので、ポリエ
チレン樹脂管１は、通電発熱体１０を介して互いに接合
される。通電は、インジケーターが継手本体９の表面上
に隆起したところで停止する。
【００１６】
【発明の効果】以上説明したように、この発明によれ
ば、内部に通電発熱体が埋め込まれた、接続すべき樹脂
管と同一材質からなる継手本体をパッキング形状に形成
し、この継手本体を管端間に挟み込んで通電して、継手
本体を加熱溶融し、これにより、管端同士を継手本体を
介して融着するようにしたので、以下のような有用な効
果がもたらされる。 継手本体を小型化できるので、製造コストが安価で
済み、且つ、優れた施工性が得られる。 発熱体の長さを短くすることができるので、発熱体
の断線の可能性が少なくなる。特に、発熱体として通電
発熱繊維を使用すれば、この効果が顕著となる。 継手本体外面からの突出部分が少ないので推進工法
により管を地中に埋設する場合にも適用することができ
る。 管端の加熱部分が少ないので、融着時間が短くて済
む。従って、施工性が向上する。
【図面の簡単な説明】
【図１】この発明の合成樹脂管用継手を示す正面図であ
る。
【図２】この発明の合成樹脂管用継手を示す側面図であ
る。
【図３】従来技術１の継手を管端に装着した状態を示す
断面図である。
【図４】従来技術１の通電状態を示す部分断面図であ
る。
【図５】従来技術１の融着状態を示す部分断面図であ
る。
【図６】従来技術２の継手を管端に装着した状態を示す
断面図である。
【符号の説明】
１：ポリエチレン樹脂管 ２：継手本体 ３：発熱線 ４：通電用ターミナル ５：継手 ６：インジケーター ７：継手本体 ７Ａ：スリーブ ７Ｂ：フランジ ８：ヒーター板 ９：継手本体 １０：通電発熱体 １１：通電用ターミナル １２：サドル １３：インジケーター １４：スリーブ
───────────────────────────────────────────────────── 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

Claims (4)

    【特許請求の範囲】
  1. 【請求項１】 接合すべき合成樹脂管の管端と、前記合
    成樹脂管と同一材質からなる継手本体とを互いに融着さ
    せて、前記管端同士を接合するための合成樹脂管用継手
    において、 前記継手本体は、リング板状に形成され、前記リング板
    状継手本体は、前記管端の接合時に前記管端面間に挟ま
    れ、前記リング板状継手本体内には、通電によって発熱
    する通電発熱体が埋め込まれ、前記リング板状継手本体
    外には、前記通電発熱体に通電するためのターミナルが
    設けられていることを特徴とする合成樹脂管用継手。
  2. 【請求項２】 前記通電発熱体は、通電によって発熱す
    る通電発熱繊維からなっ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。
  3. 【請求項３】 前記リング板状継手本体内には、前記合
    成樹脂管の前記管端内に嵌め込まれるスリーブが設けら
    れていることを特徴とする、請求項１または２記載の合
    成樹脂管用継手。
  4. 【請求項４】 前記リング板状継手本体外面には、前記
    リング板状継手本体より厚い肉厚を有する少なくとも１
    つのサドルが固定され、前記サドルの１つに、前記ター
    ミナルが取り付けられていることを特徴とする、請求項
    １から３の何れか１つに記載された合成樹脂管用継手。
JP8319697A 1996-11-29 1996-11-29 合成樹脂管用継手 Pending JPH10160081A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8319697A JPH10160081A (ja) 1996-11-29 1996-11-29 合成樹脂管用継手

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8319697A JPH10160081A (ja) 1996-11-29 1996-11-29 合成樹脂管用継手

Publications (1)

Publication Number Publication Date
JPH10160081A true JPH10160081A (ja) 1998-06-16

Family

ID=18113180

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8319697A Pending JPH10160081A (ja) 1996-11-29 1996-11-29 合成樹脂管用継手

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Country Link
JP (1) JPH10160081A (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011158007A (ja) * 2010-01-29 2011-08-18 Inoac Housing & Construction Materials Co Ltd 樹脂管の熱融着具
WO2012124977A2 (ko) * 2011-03-15 2012-09-20 Park Woo Il 폴리에틸렌 파이프 접합재 및 이를 이용한 접합방법
KR101285764B1 (ko) * 2011-03-15 2013-07-19 천만식 폴리에틸렌 파이프 접합방법
KR101285765B1 (ko) * 2011-03-15 2013-07-19 천만식 폴리에틸렌 파이프 접합재
JP2020091004A (ja) * 2018-12-06 2020-06-11 積水化学工業株式会社 電気融着継手、プラント用配管、および融着方法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011158007A (ja) * 2010-01-29 2011-08-18 Inoac Housing & Construction Materials Co Ltd 樹脂管の熱融着具
WO2012124977A2 (ko) * 2011-03-15 2012-09-20 Park Woo Il 폴리에틸렌 파이프 접합재 및 이를 이용한 접합방법
WO2012124977A3 (ko) * 2011-03-15 2012-12-27 Park Woo Il 폴리에틸렌 파이프 접합재 및 이를 이용한 접합방법
KR101285764B1 (ko) * 2011-03-15 2013-07-19 천만식 폴리에틸렌 파이프 접합방법
KR101285765B1 (ko) * 2011-03-15 2013-07-19 천만식 폴리에틸렌 파이프 접합재
JP2020091004A (ja) * 2018-12-06 2020-06-11 積水化学工業株式会社 電気融着継手、プラント用配管、および融着方法

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