JPH0623846A - 電気融着継手の融着方法 - Google Patents

電気融着継手の融着方法

Info

Publication number
JPH0623846A
JPH0623846A JP17982192A JP17982192A JPH0623846A JP H0623846 A JPH0623846 A JP H0623846A JP 17982192 A JP17982192 A JP 17982192A JP 17982192 A JP17982192 A JP 17982192A JP H0623846 A JPH0623846 A JP H0623846A
Authority
JP
Japan
Prior art keywords
resistance value
joint
current
resistance
value
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
JP17982192A
Other languages
English (en)
Other versions
JP2868368B2 (ja
Inventor
Toshio Inoue
敏雄 井上
Shinzaburo Oshimo
新三郎 大霜
Isamu Tanabe
勇 田邊
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.)
TANABE GIKEN KK
Kubota Corp
Original Assignee
TANABE GIKEN KK
Kubota Corp
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 TANABE GIKEN KK, Kubota Corp filed Critical TANABE GIKEN KK
Priority to JP17982192A priority Critical patent/JP2868368B2/ja
Publication of JPH0623846A publication Critical patent/JPH0623846A/ja
Application granted granted Critical
Publication of JP2868368B2 publication Critical patent/JP2868368B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52292—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being internal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—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
    • B29C66/91214—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 by measuring the electrical resistance of a resistive element belonging to one of the parts to be welded, said element acting, e.g. as a thermistor
    • 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
    • B29C66/9131—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 heat or the thermal flux, i.e. the heat flux
    • B29C66/91311—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 heat or the thermal flux, i.e. the heat flux by measuring the heat generated by Joule heating or induction heating
    • B29C66/91317—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 heat or the thermal flux, i.e. the heat flux by measuring the heat generated by Joule heating or induction heating by measuring the electrical resistance
    • 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
    • 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
    • B29C66/70—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
    • 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
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools

Landscapes

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

Abstract

(57)【要約】 【構成】 電気融着継手１０の接合面近傍には、その抵
抗値が温度に依存して変化する抵抗線１８が設けられ
る。端子２０に通電装置２２を接続して、抵抗線１８に
通電すると、抵抗線１８が加熱され、それに伴って抵抗
線１８の抵抗値が大きくなる。そして、通電中に、抵抗
線１８の抵抗値が接合面の溶融が完了するときの抵抗値
に達すると、抵抗線１８への通電を停止する。 【効果】 安価にして適正に融着できる。

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】この発明は電気融着継手の融着方
法に関し、特にたとえば継手本体に設けられた発熱体に
通電して被接合部材を融着接合する、電気融着継手の融
着方法に関する。
【０００２】
【従来の技術】電気融着継手の典型的な一例が図３に示
され、この電気融着継手１は、ポリエチレンやポリブテ
ン等の合成樹脂からなる略中空円筒状の本体２を含み、
本体２に埋め込まれた電熱線３の両端部には、本体２か
ら突出して通電端子４が形成されている。融着接合時に
は、継手１の受口５に接続すべき図示しないパイプを挿
入し、図示しない通電装置を通電端子４に接続する。そ
して、通電装置に記憶された継手毎の通電条件（通電時
間等）から適当な通電条件をスイッチ等によって選択
し、その通電条件に従って、電熱線３に通電する。
【０００３】
【発明が解決しようとする課題】従来の電気融着継手の
融着方法では、作業者がスイッチ等によって通電条件を
選択するため、誤って選択する可能性があり、そのよう
な場合には、適正な融着ができないという問題点があっ
た。そこで、継手毎に固有の抵抗値を設定してその抵抗
値を認識し、自動的に通電時間を設定するようにした融
着方法，継手に認識用抵抗を埋め込み、それを読み取る
ことによって通電時間を設定するようにした融着方法，
継手のインジケータとなる孔に設けられたリミットスイ
ッチが溶融樹脂によって押されたとき通電を停止するよ
うにした融着方法，あるいは継手の孔に設けられた熱電
対が所定の温度を検知すると通電を停止するようにした
融着方法等が知られている。
【０００４】しかし、これらの融着方法においては、コ
スト面あるいは精度面で問題があった。それゆえに、こ
の発明の主たる目的は、安価にして適正に融着できる電
気融着継手の融着方法を提供することである。
【０００５】
【課題を解決するための手段】この発明は、その抵抗値
が温度に依存して変化する発熱体を含む電気融着継手で
被接合部材を融着する方法において、通電中に発熱体の
抵抗値が所定の値になったとき通電を停止するようにし
たことを特徴とする、電気融着継手の融着方法である。
【０００６】
【作用】発熱体に通電して発熱体を加熱すると、発熱体
の抵抗値Ｒが温度上昇に伴って大きくなる。接合面の溶
融が完了するときの発熱体の抵抗値Ｒ1 をたとえば通電
装置内のメモリに予め記憶しておき、発熱体の実際の抵
抗値Ｒをたとえば通電装置内の抵抗値検知回路で通電中
に検知し、Ｒ＝Ｒ1 となったときに通電を停止する。
【０００７】
【発明の効果】この発明によれば、継手に圧力センサや
熱電対等の特別な部品を設ける必要がなく、安価にして
適正に融着できる。この発明の上述の目的，その他の目
的，特徴および利点は、図面を参照して行う以下の実施
例の詳細な説明から一層明らかとなろう。
【０００８】
【実施例】この発明が適用され得る電気融着継手の一例
が図１に示され、この電気融着継手１０は、たとえばポ
リエチレン等の合成樹脂からなる略中空円筒状の本体１
２を含む。本体１２の中空部は、後述するパイプ１４を
受け入れる受口１６となり、受口１６の内表面近傍には
その抵抗値が温度に依存して変化する発熱体としての抵
抗線１８が埋め込まれる。抵抗線１８の両端部には、本
体１２から突出して設けられた端子２０が接続される。
【０００９】図２を参照して、電気融着継手１０に通電
するための通電装置２２は、ケーシング２４を含む。ケ
ーシング２４の内部には、図示しないマイクロコンピュ
ータ等を有する通電制御回路２６，通電制御回路２６に
接続される通電回路２８および抵抗値検知回路３０等が
収納され、通電回路２８および抵抗値検知回路３０がケ
ーシング２４に設けられた端子３２に接続される。
【００１０】図１に戻って、接合時には、まず、電気融
着継手１０の左右の受口１６にたとえばポリエチレン等
の合成樹脂からなるパイプ１４を挿入し、通電装置２２
の端子３２から延びる線３４を電気融着継手１０の端子
２０に接続する。そして、図２に示す通電装置２２の電
源を投入する。すると、通電装置２２では、まず、抵抗
値検知回路３０が抵抗線１８の初期抵抗値Ｒ0 を検知
し、その値Ｒ0 を通電制御回路２６に与える。通電制御
回路２６は、接合面の溶融が完了するときの温度から初
期温度を引いた抵抗線１８の必要上昇温度と温度係数と
から抵抗値の変化率ａを算出し、この変化率ａを初期抵
抗値Ｒ0 に乗じた値すなわち接合面の溶融が完了すると
きの抵抗値Ｒ1 （＝ａ×Ｒ0 ）をメモリに記憶する。通
電回路２８は、通電に必要な所定の電力を発生する。
【００１１】通電回路２８によって抵抗線１８に通電す
ると、抵抗線１８の温度が上昇し、それに伴って抵抗線
１８の抵抗値Ｒが大きくなる。抵抗値検知回路３０は、
抵抗線１８の抵抗値Ｒを随時検知し、この値Ｒを通電制
御回路２６へ与え、通電制御回路２６は、抵抗値Ｒとメ
モリに記憶された値Ｒ1 とを比較し、Ｒ＝Ｒ1 となった
ときに通電を停止する。
【００１２】この実施例によれば、圧力センサや熱電対
等の特別な部品を設ける必要がないので、継手の製造コ
ストを低減できる。また、変化率ａを変更することによ
って通電時間や電圧などの供給電力相関因子を容易に変
更できるので、種類の異なる継手や口径の異なる継手等
にも容易に対応することができる。
【００１３】なお、この実施例では、通電制御回路２６
において、抵抗線１８の初期抵抗値Ｒ0 に変化率ａを乗
じ、その値Ｒ1 （＝ａ×Ｒ0 ）をメモリに記憶するよう
にしているが、通電制御回路２６における演算を省略し
て、実験によって値Ｒ1 を求め、それをそのままメモリ
に記憶するようにしてもよい。また、この実施例では、
発熱体として抵抗線１８を用いるようにしているが、こ
れに代えて、円筒状や板状の発熱体等を用いるようにし
てもよい。
【図面の簡単な説明】
【図１】この発明の一実施例の電気融着継手の融着方法
を示す図解図である。
【図２】図１の実施例で用いられる通電装置を示すブロ
ック図である。
【図３】従来技術を示す図解図である。
【符号の説明】
１０ …電気融着継手 １２ …本体 １８ …抵抗線 ２０ …端子 ２２ …通電装置 ２４ …ケーシング ２６ …通電制御回路 ２８ …通電回路 ３０ …抵抗値検知回路
フロントページの続き (72)発明者 大霜 新三郎 大阪府堺市石津北町64番地 株式会社クボ タビニルパイプ工場内 (72)発明者 田邊 勇 奈良県北葛城郡広陵町馬見南５丁目１番８ −16号

Claims (1)

    【特許請求の範囲】
  1. 【請求項１】その抵抗値が温度に依存して変化する発熱
    体を含む電気融着継手で被接合部材を融着する方法にお
    いて、 通電中に前記発熱体の抵抗値が所定の値になったとき通
    電を停止するようにしたことを特徴とする、電気融着継
    手の融着方法。
JP17982192A 1992-07-07 1992-07-07 電気融着継手の融着方法 Expired - Fee Related JP2868368B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17982192A JP2868368B2 (ja) 1992-07-07 1992-07-07 電気融着継手の融着方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17982192A JP2868368B2 (ja) 1992-07-07 1992-07-07 電気融着継手の融着方法

Publications (2)

Publication Number Publication Date
JPH0623846A true JPH0623846A (ja) 1994-02-01
JP2868368B2 JP2868368B2 (ja) 1999-03-10

Family

ID=16072484

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17982192A Expired - Fee Related JP2868368B2 (ja) 1992-07-07 1992-07-07 電気融着継手の融着方法

Country Status (1)

Country Link
JP (1) JP2868368B2 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995016557A2 (en) * 1993-12-15 1995-06-22 Tokushu, Kogyo Kabushikigaisha Electrofusion fastening apparatus
US6134387A (en) * 1995-05-15 2000-10-17 Toss; Ramon Process and device for hot gas welding of plastic sheets with electrically heated tubular gas flow conduit
KR100981490B1 (ko) * 2002-12-20 2010-09-10 가부시키가이샤 후로웨루 수지튜브의 용착장치

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995016557A2 (en) * 1993-12-15 1995-06-22 Tokushu, Kogyo Kabushikigaisha Electrofusion fastening apparatus
WO1995016557A3 (en) * 1993-12-15 1996-02-29 Tokushu Kogyo Kabushikigaisha Electrofusion fastening apparatus
US6134387A (en) * 1995-05-15 2000-10-17 Toss; Ramon Process and device for hot gas welding of plastic sheets with electrically heated tubular gas flow conduit
KR100981490B1 (ko) * 2002-12-20 2010-09-10 가부시키가이샤 후로웨루 수지튜브의 용착장치

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