JPH08270874A - プラスチック管の接続方法 - Google Patents

プラスチック管の接続方法

Info

Publication number
JPH08270874A
JPH08270874A JP8085715A JP8571596A JPH08270874A JP H08270874 A JPH08270874 A JP H08270874A JP 8085715 A JP8085715 A JP 8085715A JP 8571596 A JP8571596 A JP 8571596A JP H08270874 A JPH08270874 A JP H08270874A
Authority
JP
Japan
Prior art keywords
temperature
joint
heating wire
plastic pipe
energization
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
Application number
JP8085715A
Other languages
English (en)
Other versions
JP2828425B2 (ja
Inventor
Takashi Anamizu
孝 穴水
Hiroshi Oya
博 大矢
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.)
Tokyo Gas Co Ltd
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
Tokyo Gas 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 Hitachi Metals Ltd, Tokyo Gas Co Ltd filed Critical Hitachi Metals Ltd
Priority to JP8085715A priority Critical patent/JP2828425B2/ja
Publication of JPH08270874A publication Critical patent/JPH08270874A/ja
Application granted granted Critical
Publication of JP2828425B2 publication Critical patent/JP2828425B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • B29C66/11—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
    • B29C66/50—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
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91212—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws
    • 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
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91221—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • 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
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91441—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time
    • B29C66/91443—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile
    • 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
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91641—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time
    • 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
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
    • 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
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
    • B29C66/91655—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating by controlling or regulating the current intensity
    • 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
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/959—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables
    • B29C66/9592—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables in explicit relation to another variable, e.g. X-Y diagrams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Control Of Temperature (AREA)

Abstract

(57)【要約】 【課題】 間違った初期温度測定により融着不良を起こ
す問題点を解消し、継手の初期温度を常に正しく検出し
て、この検出値に基づき正しい融着作業の通電制御を行
なえるようにしたプラスチック管の接続方法を提供す
る。 【解決手段】 電熱線を埋め込んだプラスチック継手に
接続すべきプラスチック管を挿入し、電熱線への通電に
よって継手とプラスチック管とを融着するプラスチック
管の接続方法において、電熱線へ通電する前に、温度セ
ンサーで継手の温度を測定し、測定した温度の変化を監
視し、この温度変化に基づいて継手の初期温度を定め、
初期温度に基づいて継手電熱線への通電制御を行なうプ
ラスチック管の接続方法である。前記において、温度変
化があらかじめ設定された値以下になったときの温度を
継手の初期温度として検出する。

Description

【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、内周部に電熱線を
埋め込んだプラスチック継手にポリエチレン等のプラス
チック管を挿入して継手と管を溶融接続するプラスチッ
ク管の接続方法に関するものである。
【０００２】
【従来の技術】従来、温度センサーで通電開始前に継手
部材の表面温度を測定し、この測定した温度を基に継手
部材の電熱線への供給電力量を時間と共に制御する制御
方法が開示されている。この温度センサーは継手部材へ
の接続端子に組み込まれており継手部材に接続端子を接
続すると同時にセンサーで継手の温度を測定する。
【０００３】
【発明が解決しようとする課題】上記従来技術にあって
は、継手の電熱線へ電力を供給して管と融着作業を行な
っている間に、継手の温度が上昇するので温度センサー
も熱くなる。このため融着作業を終了後次の融着作業を
連続して行う場合、前回の融着接続時の熱が温度センサ
ーに残っており、温度センサーが周囲の温度にまで低下
せず、まだ熱い状態で次に新しく接続する継手の温度を
測定する場合がある。この場合正しい継手の初期温度を
測定できずに、実際より高い間違った温度を継手の初期
温度と判断し、この間違った初期温度に基づいて制御電
源部から継手の電熱線へ継手と管を融着する通電制御を
行ない、融着不足や過大融着等の融着不良を起こす問題
がある。
【０００４】本発明の目的は、間違った初期温度測定に
より通電制御を行なって融着不良を起こす問題点を解消
し、継手の初期温度を常に正しく検出して、この検出値
に基づき通電制御を行ない正しい融着作業を行なえるよ
うにしたプラスチック管の接続方法を提供するものであ
る。
【０００５】
【課題を解決するための手段】本発明の要旨は、電熱線
を埋め込んだプラスチック継手に接続すべきプラスチッ
ク管を挿入し、電熱線への通電によって前記継手とプラ
スチック管とを融着するプラスチック管の接続方法にお
いて、前記電熱線へ通電する前に、温度センサーで継手
の温度を測定し、この測定した温度の変化を監視し、こ
の温度変化に基づいて継手の初期温度を定め、この初期
温度に基づいて前記電熱線への通電制御を行なうことを
特徴とするプラスチック管の接続方法である。前記にお
いて、前記電熱線へ通電する前に、温度センサーで前記
継手の温度を測定し、この測定した温度の変化が大きい
か否かを判断し、この温度変化があらかじめ設定された
値以下になったときの温度を継手の初期温度として検出
し、この初期温度に基づいて前記電熱線への通電制御を
行なうことができる。また前記において、検出した初期
温度によって電熱線への通電完了温度を設定し通電制御
を行なうことができる。
【０００６】
【作用】本発明によれば、電熱線への通電開始前に温度
センサーで測定した継手の温度変化を監視してこの温度
変化に基づいて継手の初期温度を検出している。温度変
化が小さくなった状態のセンサーの温度は、前回の融着
作業時に熱せられたセンサーが今回接続しようとする継
手の温度と同じ温度まで冷却された温度である。すなわ
ち、前回融着時での熱の影響がなくなった状態の温度を
示し、これを継手の初期温度として検出している。この
ため、前回融着時での加熱されたセンサーの熱影響が自
動的に除かれるので、連続して融着作業を行なっても、
次に接続する継手の初期温度を常に正しく検出して、こ
の正しい初期温度検出値に基づいて継手電熱線への通電
制御を正しく行なうことができる。従って誤った初期温
度検出値による継手と管との融着不足や過大融着等の融
着不良が起こる問題が解消される。
【０００７】
【発明の実施の形態】以下本発明の一実施形態を図１な
いし図５を参照して説明する。図１において継手本体２
の内周面には、通電によって加熱する電熱線４が螺旋状
に巻かれた状態で埋設されている。電熱線４の両端には
コネクターピン７、７が接続されており、このコネクタ
ーピン７、７にはコントローラ５のコネクター６、６が
接続される。コントローラ５から電熱線４へ電流を通電
することにより電熱線４を発熱させ、電熱線の発熱によ
って継手本体２内に装着したプラスチック管１、１と融
着する。
【０００８】３は例えば熱電対からなる温度センサー
で、継手本体２に設けた温度測定用凹穴２ａに挿入して
凹穴底面の温度を測定する。センサー３は通電開始前か
ら継手本体２の温度を測定しており、通電開始前に測定
した初期温度に基づいて、通電を終了する通電完了温度
をコントローラ５内で設定し、通電開始後、継手本体の
温度が設定した通電完了温度に到達したら通電を終了す
るようになっている。
【０００９】図２は外気温度と通電時間の関係を示す図
で、設定した通電完了温度を一定とすると、外気温度に
よって通電完了温度になるまでの通電時間が異なる。外
気温度によって最適な通電完了温度を設定し、この設定
した通電完了温度に達したら通電が停止される制御方式
の通電制御がコントローラ５内で行なわれる。また本実
施形態では図３に示すように、継手本体の凹穴２ａに挿
入した一方のセンサー３の温度が設定温度に達しなくと
も、もう一方のセンサー３の温度が設定温度に達したら
通電が停止される。この方式により、一方のセンサー３
が継手本体の凹穴２ａ内へ挿入ミス等で測定不良があっ
ても、もう一方のセンサーで正しい温度測定が行なわ
れ、正しい温度測定が行なわれる。
【００１０】次に通電制御の状態を図４、図５のフロー
チャートにより説明する。図４においてまず電源をＯＮ
にするとコントローラ５全体にリセットがかけられ、時
間表示が０にリセットされ、コントローラのコネクター
取付ランプが点燈する。そして２個のコネクター６、６
を継手本体２のコネクターピン７、７に接続すると、コ
ネクター取付ランプが消燈し、コネクター接続ランプが
点燈する。次に通電ボタンを押すと、通電ランプが点滅
を開始する。この状態ではまだ通電が行なわれず、セン
サー３の作動状態が調べられる。センサー３に断線があ
れば異常ランプが点燈し異常を知らせるブザーが鳴る。
【００１１】センサー３が断線していなければ、ステッ
プ（イ）においてセンサーが継手本体２の温度を正確に
測定しているかどうかの温度変化が調べられる。ここで
センサー３自体が前回の融着作業で受けた熱の影響がな
くなり、温度変化が小になるまで待機される。すなわち
温度変化が大の時は（ロ）のループで戻り、センサー断
線の有無と温度変化の判断（イ）が繰り返される。セン
サー３の温度変化が小になると、ステップ（ハ）におい
て温度変化が小さくなった状態のセンサーの温度が、継
手の初期温度として検出される。この初期温度に基づい
てステップ（ニ）において通電完了温度が設定され、こ
の通電完了温度はメモリーに格納される。
【００１２】続いてコントローラ５から所定の電圧がコ
ネクター６を介して電熱線４へ出力され、通電時間がカ
ウントを開始し、通電ランプが点滅から点燈になり、通
電状態を知らせるブザーが低音で鳴動する。そしてセン
サー３断線の有無、電熱線４ショートの有無、電熱線４
へ出力される電圧異常の有無、継手本体２の昇温異常の
有無が調べられる。異常があれば異常ランプが点燈し、
異常を知らせるブザーが鳴る。
【００１３】異常がなく、リセットボタンが押されなけ
れば、前記継手の初期温度検出値に基づいて設定された
通電完了設定温度に到達するまでの間前記の異常の確認
が繰り返され、通電完了設定温度に到達すると、電熱線
４への通電が停止する。次に図５で示すように、コント
ローラ５内の回路が遮断し、通電ランプが消燈し、ブザ
ーの鳴動が停止し、変わって冷却中を示す冷却ランプが
点燈する。継手に応じた所定の冷却時間５５秒が経過す
ると冷却ランプが消燈し、冷却完了を知らせるブザーが
高音で２回鳴り、コネクター取外しランプが点燈する。
コネクターが継手から取外されると、継手取外しランプ
が消燈し、接続ランプが消燈し、これによって融着作業
が終了する。
【００１４】本発明は以上のように制御され、センサー
３の温度が継手本体２の温度を正確に測定しているかど
うかを、センサー自体が、前回の融着作業で受けた熱の
影響がなくなるまですなわち温度変化が小になるまでス
テップ（イ）で判断して、継手本体の初期温度を検出し
ている。このため連続して融着作業を行なっても、前回
の融着作業で受けた熱の影響がない、正しい継手本体の
初期温度を検出し、この正しい初期温度検出値に基づい
て継手の電熱線にコントローラの通電制御を行ない、正
しい融着が行なえる。
【００１５】
【発明の効果】以上説明のごとく本発明によれば、前回
の融着作業時に熱せられた温度センサーを用いて引き続
き融着作業を行なっても、前回融着時に受けたセンサー
の熱影響を除いて、次に接続する継手の初期温度を常に
正しく検出する。この正しい初期温度検出値に基づいて
継手電熱線への通電制御を行なうので、融着不良が生じ
ない正しい融着接続が行なえる。
【図面の簡単な説明】
【図１】本発明の一実施形態のプラスチック管と接続す
る状態を示す断面図である。
【図２】外気温度の相違に基づく温度センサーと通電時
間の関係を示す図である。
【図３】一方の温度センサーに異常があった場合のセン
サー温度と通電時間の関係を示す図である。
【図４】コントローラの継手への通電の制御を示すフロ
ーチャートである。
【図５】図４の続きのコントローラの継手への通電制御
を示すフローチャートである。
【図６】従来技術を説明するプラスチック管との接続状
態の断面図である。
【符号の説明】
１ プラスチック管 ２ 継手本体 ２ａ 凹穴 ３ 温度センサー ４ 電熱線 ５ コントローラ ６ コネクター ７ コネクターピン

Claims (3)

    【特許請求の範囲】
  1. 【請求項１】 電熱線を埋め込んだプラスチック継手に
    接続すべきプラスチック管を挿入し、前記電熱線への通
    電によって前記継手とプラスチック管とを融着するプラ
    スチック管の接続方法において、 前記電熱線へ通電する前に、温度センサーで前記継手の
    温度を測定し、この測定した温度の変化を監視し、この
    温度変化に基づいて継手の初期温度を定め、この初期温
    度に基づいて前記電熱線への通電制御を行なうことを特
    徴とするプラスチック管の接続方法。
  2. 【請求項２】 電熱線を埋め込んだプラスチック継手に
    接続すべきプラスチック管を挿入し、前記電熱線への通
    電によって前記継手とプラスチック管とを融着するプラ
    スチック管の接続方法において、 前記電熱線へ通電する前に、温度センサーで前記継手の
    温度を測定し、この測定した温度の変化が大きいか否か
    を判断し、この温度変化があらかじめ設定された値以下
    になったときの温度を継手の初期温度として検出し、こ
    の初期温度に基づいて前記電熱線への通電制御を行なう
    ことを特徴とするプラスチック管の接続方法。
  3. 【請求項３】 前記検出した初期温度によって電熱線へ
    の通電完了温度を設定し通電制御を行なうことを特徴と
    する請求項１または２記載のプラスチック管の接続方
    法。
JP8085715A 1996-03-14 1996-03-14 プラスチック管の接続方法 Expired - Fee Related JP2828425B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8085715A JP2828425B2 (ja) 1996-03-14 1996-03-14 プラスチック管の接続方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8085715A JP2828425B2 (ja) 1996-03-14 1996-03-14 プラスチック管の接続方法

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP3240456A Division JP2843894B2 (ja) 1991-08-27 1991-08-27 プラスチック管の接続方法

Publications (2)

Publication Number Publication Date
JPH08270874A true JPH08270874A (ja) 1996-10-15
JP2828425B2 JP2828425B2 (ja) 1998-11-25

Family

ID=13866536

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8085715A Expired - Fee Related JP2828425B2 (ja) 1996-03-14 1996-03-14 プラスチック管の接続方法

Country Status (1)

Country Link
JP (1) JP2828425B2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105098708A (zh) * 2014-05-22 2015-11-25 住友电装株式会社 电线保护装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6273129A (ja) * 1985-09-26 1987-04-03 Nec Corp 電子体温計
JPS63203991A (ja) * 1987-02-17 1988-08-23 日立金属株式会社 電気融着式プラスチツク管の接続方法
JPS63311131A (ja) * 1987-06-12 1988-12-19 Sanyo Electric Co Ltd 電子式体温計

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6273129A (ja) * 1985-09-26 1987-04-03 Nec Corp 電子体温計
JPS63203991A (ja) * 1987-02-17 1988-08-23 日立金属株式会社 電気融着式プラスチツク管の接続方法
JPS63311131A (ja) * 1987-06-12 1988-12-19 Sanyo Electric Co Ltd 電子式体温計

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105098708A (zh) * 2014-05-22 2015-11-25 住友电装株式会社 电线保护装置
CN105098708B (zh) * 2014-05-22 2018-04-17 住友电装株式会社 电线保护装置

Also Published As

Publication number Publication date
JP2828425B2 (ja) 1998-11-25

Similar Documents

Publication Publication Date Title
US4642155A (en) Thermoplastic fitting electric heat welding method and apparatus
US4602148A (en) Thermoplastic fitting electric heat welding method and apparatus
US4684789A (en) Thermoplastic fitting electric welding method and apparatus
US4978837A (en) Method and apparatus for electrically heat welding thermoplastic fittings
US5150923A (en) Plastic pipe joint assembly for joining sections of plastic pipe
JPH08270874A (ja) プラスチック管の接続方法
US4631107A (en) Thermoplastic fitting electric heat welding apparatus
JP2513757B2 (ja) 電気融着式プラスチック管の接続方法
JP2570527B2 (ja) 電気融着制御装置
JPH0743067B2 (ja) エレクトロフュージョン継手の不良表示方法
JP2962999B2 (ja) 電気融着継手の通電制御方法
JPH06190925A (ja) 融着継手の制御装置
JP2843894B2 (ja) プラスチック管の接続方法
JP3438338B2 (ja) 電気融着式管継手の通電制御方法
JPH02231127A (ja) エレクトロフュージョン継手の融着方法及びその装置
JP2546783B2 (ja) 電気溶融着装置
JP2819010B2 (ja) 電気溶融着装置
KR970001020B1 (ko) 융착감지부를 가지는 전자융착식 피팅
JP2819011B2 (ja) 電気溶融着装置
JPH0716930A (ja) 樹脂製品の電気溶融着装置
JPH04203585A (ja) 電気融着継手
JP2539746B2 (ja) 樹脂製品の電気溶融着装置
JPH0571835B2 (ja)
JP2003320587A (ja) 電気融着方法及び装置と電気融着継手
JP3693186B2 (ja) 電気融着継手の通電時間制御方法及び電気融着装置

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313117

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080918

Year of fee payment: 10

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090918

Year of fee payment: 11

LAPS Cancellation because of no payment of annual fees