JPH07139681A - 高周波誘電発熱体を有する管継手 - Google Patents

高周波誘電発熱体を有する管継手

Info

Publication number
JPH07139681A
JPH07139681A JP5307080A JP30708093A JPH07139681A JP H07139681 A JPH07139681 A JP H07139681A JP 5307080 A JP5307080 A JP 5307080A JP 30708093 A JP30708093 A JP 30708093A JP H07139681 A JPH07139681 A JP H07139681A
Authority
JP
Japan
Prior art keywords
joint
heat generation
high frequency
pipe
fitting
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
JP5307080A
Other languages
English (en)
Inventor
Kotaro Shiozaki
孝太郎 塩崎
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.)
Fujipura Seiko Co Ltd
Original Assignee
Fujipura Seiko Co 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 Fujipura Seiko Co Ltd filed Critical Fujipura Seiko Co Ltd
Priority to JP5307080A priority Critical patent/JPH07139681A/ja
Publication of JPH07139681A publication Critical patent/JPH07139681A/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
    • 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
    • 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"
    • B29C65/36—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" heated by induction
    • B29C65/3604—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" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3608—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" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements
    • B29C65/3612—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" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements comprising fillers
    • 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"
    • B29C65/36—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" heated by induction
    • B29C65/3604—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" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3608—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" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements
    • B29C65/3616—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" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements comprising discontinuous fibre-reinforcements
    • 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"
    • B29C65/36—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" heated by induction
    • B29C65/3672—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" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3684—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" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being non-metallic
    • B29C65/3696—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" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being non-metallic with a coating
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4865—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives
    • B29C65/487—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their shape, e.g. being fibres or being spherical
    • B29C65/4875—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their shape, e.g. being fibres or being spherical being spherical, e.g. particles or powders
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4865—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives
    • B29C65/487—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their shape, e.g. being fibres or being spherical
    • B29C65/488—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their shape, e.g. being fibres or being spherical being longitudinal, e.g. fibres
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4865—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives
    • B29C65/4885—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their composition being non-plastics
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces 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
    • 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
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap 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
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1284—Stepped joint cross-sections comprising at least one butt joint-segment
    • B29C66/12841—Stepped joint cross-sections comprising at least one butt joint-segment comprising at least two butt joint-segments
    • 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
    • B29C66/14—Particular design of joint configurations particular design of the joint cross-sections the joint having the same thickness as the thickness 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
    • 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

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】 【目的】 Ｅ・Ｆ継手は合成樹脂管の結合手段として最
適なものとされているが、発熱コイル（コイル状ニクロ
ム線）の取付成形の難しさ、あるいは電流供給のための
コンセントなどの付属部品の多さなど実用上の問題点が
あった。この発明はこれを解消したものである。 【構成】 熱可塑性合成樹脂製の継手内に、この継手材
と同質材樹脂と高周波誘電発熱体の短繊維または粉粒体
とを混練して形成した発熱層を配設して管継手が形成さ
れている。 【効果】 管継手に設けた発熱層に対して高周波電界発
生装置よりの高周波電界を照射することで接続部位を溶
融化できＥ・Ｆ継手に比べて作業性，経済性共にまさる
ものである。

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】この発明は高周波誘電発熱体を有
する合成樹脂管の管継手に関し、具体的には熱可塑性合
成樹脂製の管継手内に高周波誘電発熱体で形成した発熱
層を設けた管継手に係り、更に詳細には前記発熱層を管
継手材料と同質または親和性のある異質の材料と高周波
電界によって誘電熱を生ずる発熱材の短繊維または粉粒
体とを混練したものとして形成した高周波誘電発熱体を
有する管継手に関する。
【０００２】
【従来の技術】熱可塑性合成樹脂管の接合手段として
は、材質により異なるが接着法、融着法の外にパッキン
またはスリーブ等を用いた機械的接続法が一般的であ
る。
【０００３】前記手段のうちに融着法にはウエルド法と
Ｅ・Ｆ継手法とがあり、ウエルド法は管継手の継手内面
と接合管の接合部を加熱溶融して両者を接合するもので
あり、Ｅ・Ｆ継手法とは管継手の継手内面にニクロム線
等の電熱線をコイル状に巻き付けて一体化しておき、こ
のニクロム線を発熱させて接手管との溶着を行うもので
ある。
【０００４】上記したＥ・Ｆ継手法が熱可塑性合成樹脂
管の接手手段として最も確実なものとして認識されてい
るが、Ｅ・Ｆ継手法はＥ・Ｆ継手が高価であることに難
点があり、しかもＥ・Ｆ継手の製造方法が複雑で精度を
要するとの加工上の問題もあった。
【０００５】例えば、ニクロム線を継手材と同質材で絶
縁被覆したものを冶具に巻き付け、それを金型にセット
して射出成形手段によってＥ・Ｆ継手が成形されてい
た。
【０００６】
【発明が解決しようとする課題】上記したＥ・Ｆ継手
は、Ｅ・Ｆ継手の成形時にコイル状ニクロム線（発熱コ
イル）が樹脂圧により移動したり断線したり、またリー
ド線の取り出し、ソケット，プラグ等電気への接続用コ
ンセント部が必要であり、しかも接合管との接続時の融
着時にリード線まで発熱するとかの問題点があった。
【０００７】
【課題を解決するための手段】この発熱は熱可塑性合成
樹脂製の管継手の継手の内面部に高周波誘電発熱層を配
設し、この発熱層に高周波電界を照射することにより、
発熱層中の発熱体を誘電加熱し、この誘電熱を介して継
手と接合管の接合部を溶融化し両者を溶着接合させよう
とするものである。
【０００８】この発明の基本的構成を図１により説明す
れば次のとおりである。図面中の符号１０はこの発明に
係る高周波誘電発熱体を有する管継手であり、１は継
手，２は発熱層を表わしている。
【０００９】継手１は熱可塑性合成樹脂材で形成されて
おり、発熱層２は継手１の内部の所用部位に配設されて
いる。発熱層２は図２に示すように、継手材１と同材料
または親和性のある異質の材料２１と誘電性の発熱体で
形成した短繊維または粉粒体２２とを混練した状態で成
形されている。
【００１０】なお、上記管継手１０は発熱層２と継手１
を一体成形して形成される場合と個別に成形した継手１
の所用部位に発熱層２を嵌着して形成してもよい。
【００１１】
【作用】この発熱は図３に示すように高周波誘電発熱体
を有する管継手１０と接合管２０の接合部位に高周波電
界発生装置Ａより高周波電界を加熱電極Ｅを介して照射
し、これによって誘電加熱された発熱層２を介して両者
を融着結合させようとするものである。
【００１２】
【実施例】図４にこの発明に係る管継手の実施例が示さ
れている。同図は管継手１０の継手１に接合管２０，２
０を接続する場合を示したもので、継手１と同質材料で
形成されている合成樹脂管２０，２０のそれぞれの先端
を継手との接続部位まで挿着した状態で、高周波電源Ｈ
と電界発生電極（加熱電極）Ｅを有する高周波電界発生
装置Ａを作動させて継手の発熱層２を誘電加熱し、この
熱によって接続部位を溶融化し、継手１と接続管２０，
２０とを溶着状の固化接続が得られる。
【００１３】なお、この種の接続に際しては継手および
接合管のそれぞれの自由端にまで溶融化を及ぼさないた
め継手１内に設けた発熱層２のそれぞれの自由端側には
所定巾の非発熱層部Ｃ，Ｃの存在することが望ましい。
【００１４】ここで、発熱層２中の発熱材の短繊維また
は粉粒体２２の粒度は、高周波加熱機能を有する発熱材
として高周波誘電加熱機能を有する誘電率の高いもので
あればよく、一般的には各種樹脂の強化と、成形性を考
慮して、０．２〜１００マイクロメーター程度のものが
あれば好ましい。又、発熱層２の厚さは、管体の肉厚直
径等に適応させた任意の形状が選べるものであり、発熱
材の混合比も、１対１の重量比で充分である。
【００１５】発熱材として最も良好なものの１つに、酸
化亜鉛（ＺｎＯ）ウィスカがあり、このウィスカは、強
酸，強アルカリ以外、化学的に安定であり、耐熱性も優
れている。また発熱材としては、酸化マグネシウム，酸
化硅素などがある。
【００１６】また、図５から明らかなように高周波電界
発生装置Ａは商用周波電力を用い、この電力を整流器、
高周波インバータ（高周波電源）Ｈを介して加熱電極Ｅ
より高周波電解を照射するものである。
【００１７】
【発明の効果】この発明は熱可塑性合成樹脂製の管継手
の継手内面に高周波誘電発熱体を内包する発熱層を配設
し、この発熱層に高周波電界を照射することでこの部位
とこの部位を接続部とする接合管の接続部を溶融化し、
溶着接合を行なわせるものであり、加工工程を単純化で
きるばかりでなく経済的である。
【００１８】また、この発明は従来のＰ・Ｖ・Ｃ管のボ
ンド接着法による管継手と同一形状にてまた同時２色成
形により極めて製造工程を簡単に出来、しかもＥ・Ｆ継
手よりもより確実にその上Ｅ・Ｆ継手で必要としていた
リード線やプラグの必要がなく、全体形状もシンプルな
ものとして提供できるものである。
【図面の簡単な説明】
【図１】高周波誘電発熱体を有する管継手の基本構成の
要部断面図である。
【図２】発熱層の断面説明図である。
【図３】この発明に係る管継手の基本継手構成の要部断
面説明図である。
【図４】この発明の実施例の要部断面説明図である。
【図５】高周波電界発生装置の作動説明図である。
【符号の説明】
１ 継手 ２ 発熱層 １０ 管継手 ２０ 接合管 ２１ 継手材と同質の材料 ２２ 発熱材（発熱体）で形成された短繊維または粉粒
体 Ｃ 非発熱層部 Ａ 高周波電界発生装置 Ｈ 高周波電源 Ｅ 加熱電極

Claims (4)

    【特許請求の範囲】
  1. 【請求項１】 熱可塑性合成樹脂製の管継手の継手内に
    高周波誘電発熱体で形成した発熱層を付設したことを特
    徴とする高周波誘電発熱体を有する管継手。
  2. 【請求項２】 請求項１記載の発熱層を、継手と同質材
    料または親和性のある材料と高周波誘電発熱体材料の短
    繊維または粉粒体とを混練して形成したことを特徴とす
    る高周波誘電発熱体を有する管継手。
  3. 【請求項３】 請求項１記載の発熱層を継手に対して着
    脱自在に形成したことを特徴とする高周波誘電発熱体を
    有する管継手。
  4. 【請求項４】 請求項１記載の高周波誘電発熱体を有す
    る管継手に接合管等を結合に際して前記両部材の接続部
    位を高周波電界発生装置よりの高周波電界を照射して、
    この部位を溶融し溶着固化させることを特徴とした管継
    手方法。
JP5307080A 1993-11-15 1993-11-15 高周波誘電発熱体を有する管継手 Pending JPH07139681A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5307080A JPH07139681A (ja) 1993-11-15 1993-11-15 高周波誘電発熱体を有する管継手

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5307080A JPH07139681A (ja) 1993-11-15 1993-11-15 高周波誘電発熱体を有する管継手

Publications (1)

Publication Number Publication Date
JPH07139681A true JPH07139681A (ja) 1995-05-30

Family

ID=17964800

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5307080A Pending JPH07139681A (ja) 1993-11-15 1993-11-15 高周波誘電発熱体を有する管継手

Country Status (1)

Country Link
JP (1) JPH07139681A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022045156A1 (ja) * 2020-08-31 2022-03-03 リンテック株式会社 成型体、接合方法、及び成型体の製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022045156A1 (ja) * 2020-08-31 2022-03-03 リンテック株式会社 成型体、接合方法、及び成型体の製造方法

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