JP3233722B2 - 融着継手の製造方法 - Google Patents

融着継手の製造方法

Info

Publication number
JP3233722B2
JP3233722B2 JP06668993A JP6668993A JP3233722B2 JP 3233722 B2 JP3233722 B2 JP 3233722B2 JP 06668993 A JP06668993 A JP 06668993A JP 6668993 A JP6668993 A JP 6668993A JP 3233722 B2 JP3233722 B2 JP 3233722B2
Authority
JP
Japan
Prior art keywords
fusion
joint
fusion joint
cut
coil
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.)
Expired - Fee Related
Application number
JP06668993A
Other languages
English (en)
Other versions
JPH06270255A (ja
Inventor
賢司 水川
真午 西川
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.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical 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 Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP06668993A priority Critical patent/JP3233722B2/ja
Publication of JPH06270255A publication Critical patent/JPH06270255A/ja
Application granted granted Critical
Publication of JP3233722B2 publication Critical patent/JP3233722B2/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"
    • B29C65/3404—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
    • B29C65/3432—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 comprising several wires, e.g. in the form of several independent 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"
    • B29C65/3468—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
    • B29C66/01—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
    • B29C66/50—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
    • B29C66/90—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"
    • B29C65/3472—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
    • 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
    • B29C65/362—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 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
    • B29C66/1226—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 one bevelled 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
    • B29C66/70—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)

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、電気融着継手の製造方
法に関するものである。
【０００２】
【従来の技術】従来より、管体の端部に、他の管体が嵌
合できるように拡径されるとともに、通電によって発熱
するコイルが埋設されてなる融着部を形成した各種の融
着継手が知られている。また、この種の融着継手とし
て、本発明者らは、融着部を具備する受口部材を、各種
管体の端部に突き合わせ溶接した管接続用部材を提案し
ている（例えば、国際公開特許９２−１８３２２号公報
参照）。
【０００３】また、別の融着継手としては、継手本体の
内周面全体にわたってコイルが埋設され、この継手本体
の両側から樹脂管の端部を挿入した状態で、このコイル
に通電することによって樹脂管同士を接続するようにな
された、いわゆるやりとり施工用の融着継手が知られて
いる（例えば、特公平１−４０７４３号公報参照）。
【０００４】
【発明が解決しようとする課題】ところで、上記従来の
融着継手のうち、管体の端部に融着部を形成した融着継
手の場合、融着部が有効に機能するものであったとして
も、この融着部以外の管体部分に不良箇所があるような
時は、融着継手全体が不良品となって使いものにならな
い。このうち、同一樹脂材料で構成されている管体部分
などの箇所は、切除して再生原料として利用することが
できるが、コイルや通電ターミナルと複合された融着部
の樹脂材料は、これらコイルおよび通電ターミナルと樹
脂材料とを分離するのにコストがかかるため廃棄処分な
どにしなければならず不経済になるといった不都合を生
じることとなる。また、上記従来の管接続用部材の場合
も、融着部を具備する受口部材が有効に機能するもので
あっても、管体との突き合わせ時に不良を生じてしまっ
たような場合、この管接続用部材全体が再生もしくは廃
棄処分になってしまう。特に、この種の融着継手の場
合、管体部分に比して融着部の製造にコストがかかるた
め、このように有効に機能する融着部を無駄にすること
は非常に不経済である。
【０００５】一方、やりとり施工用の融着継手の場合、
このやりとり施工用の融着継手を製造するためには、上
記融着継手とは別途、製造金型などの製造設備が必要と
なり、設備費が嵩むといった不都合を生じることとな
る。
【０００６】本発明は、係る実情に鑑みてなされたもの
で、不良品となった融着継手を有効に処分でき、かつ、
やりとり施工用の融着継手を設備投資をすることなく低
コストで製造することのできる融着継手の製造方法を提
供することを目的としている。
【０００７】
【課題を解決するための手段】上記課題を解決するため
の本発明の融着継手の製造方法は、樹脂管の端部が嵌合
可能となされるとともに、その内周面に発熱するコイル
が埋設されてなる融着部を具備する各種融着部材から、
融着部のみを切除し、この切除した融着部同士を突き合
わせ溶接し、内周面のビードを切削処理するものであ
る。
【０００８】
【作用】本発明によると、各種融着部材から切除した融
着部を突き合わせ溶接し、内周面のビードを切削処理す
ることで、やりとり施工用の融着継手が形成されること
となる。
【０００９】
【実施例】以下、本発明の一実施例を図面を参照して説
明する。
【００１０】図１は、やりとり施工用融着継手１の製造
工程の概略を示している。
【００１１】すなわち、このやりとり施工用融着継手１
の製造方法は、受口部材２から融着部２０のみを切除
し、この切除した融着部２０同士を突き合わせ溶接した
後、内周面のビード３を切削処理するものである。
【００１２】受口部材２は、円筒状で、その一端側が融
着部２０となされ、他端側が接続部２１となされてい
る。
【００１３】融着部２０は、その内周面に樹脂管４の端
部４１を嵌合可能となされている。また、この内周面に
は、通電によって発熱するコイル２２が埋設されてお
り、該コイル２２の発熱によって、コイル２２周縁の樹
脂が溶融するようになされている。すなわち、融着部２
０に樹脂管４の端部４１を嵌入してコイル２２に通電す
ることによって、融着部２０の内周壁面と樹脂管４の外
周壁面とが溶融して融着することとなる。そのため、コ
イル２２は、融着部２０の全体を周回して埋設され、融
着による融着面積を充分に確保できるようになされてい
る。このコイル２２は、その端部が、融着部２０の外周
に突設された通電ターミナル２３に配線されており、該
通電ターミナル２３から通電できるようになされてい
る。
【００１４】接続部２１は、その内周面が奥部に向かう
に従って若干縮径されている。そして、この接続部２１
の基端部と融着部２０の基端部との境界部分の内周面に
は、融着部２０および接続部２１の双方から挿入される
樹脂管４の貫通を抑止するストッパ２４が突設されてい
る。
【００１５】このようになる受口部材２は、インコア
（図示省略）にコイル２２を巻回した状態で、このイン
コアを配置した金型（図示省略）内に樹脂材料を射出す
ることによって射出成形することができる。
【００１６】この受口部材２によってやりとり施工用融
着継手１を製造するには、まず受口部材２から融着部２
０のみを切除する。
【００１７】この際、融着部２０の切断面２５と、この
切断面２５に最も近いコイル２２との距離ｄは、突き合
わせ溶接時の樹脂材料の溶融によってコイル２２がズレ
ないように配慮しなければならない。
【００１８】そして、このようにして切断した２個の融
着部２０を、互いの切断面２５を溶融加熱して突き合わ
せ溶接し、内周面のビード３を切削処理する。
【００１９】この際、突き合わせ溶接する融着部２０と
しては、例えば、ポリエチレン（ＰＥ）製の同質材料か
らなる融着部２０同士を突き合わせ溶接するものであっ
てもよい。また、ポリエチレン（ＰＥ）製とポリふっ化
ビニリデン（ＰＥＤＦ）製との異種材料からなる融着部
２０同士を突き合わせ溶接するものであってもよい。特
に、異種材料からなる融着部２０同士を突き合わせ溶接
した場合、得られるやりとり施工用融着継手１は、それ
ぞれの融着部２０で異なった融着条件で樹脂管４を融着
することが可能となる。
【００２０】なお、本実施例では、受口部材２からやり
とり施工用融着継手１を直接製造する方法について述べ
ているが、通常この受口部材２は、接続部２１の内周面
を溶融させるとともに、この接続部２１に外周面を溶融
させた樹脂管４を嵌入することによって、例えば図２に
示すような融着部２０を有する片受直管５に製造された
り、その他各種管体（図示省略）と突き合わせ溶接する
ことで各種管接続用部材として製造される。そのため、
やりとり施工用融着継手１を製造するのに必要な受口部
材２としては、これら片受直管５などの製造時および搬
送時などに生じる不良品の中から受口部材２が有効に機
能するものを切除して用いれば、これら不良品を有効に
処理することができ合理的かつ経済的である。
【００２１】また、このやりとり施工用融着継手１を製
造するもとになる融着部２０としては、このような受口
部材２や、この受口部材２を利用した片受直管５などの
融着部２０に限定されるものではなく、例えば、図３に
示すように、汎用されている各種融着継手６であって、
その融着継手６から融着部２０のみを有効に切除するこ
とができるものであれは良い。また、この融着部２０の
通電ターミナル２３の位置は、特に限定されるものでは
なく、図４に示すように、通電ターミナル２３が融着部
２０の端部側に位置するようになされたものによって製
造することもできる。
【００２２】さらに、本実施例では、通電によって発熱
するコイル２２を有する融着部２０を利用したやりとり
施工用融着継手１について述べているが、図５に示すよ
うに、通電ターミナル２３を具備せず、電磁誘導加熱に
よって発熱するコイル２２を有するやりとり施工用融着
継手１０であっても同様である。
【００２３】
【発明の効果】以上述べたように、本発明によると、突
き合わせ接続による簡単な作業で、各種融着部材からや
りとり施工用の融着継手を製造することができるので、
やりとり施工用の融着継手について個別に生産設備を設
けることなく、合理的に融着継手を製造することができ
る。
【００２４】また、融着継手の製造時に用いる各種融着
部材は、融着部のみが有効に機能するものであれば、他
の部分に不良が生じた各種融着部材などであっても有効
に再利用することができるので、生産効率の向上を図る
ことができる。
【図面の簡単な説明】
【図１】融着継手の製造工程を説明する工程図である。
【図２】融着継手の製造元部材となる片受直管を示す部
分破断側面図である。
【図３】融着継手の製造元部材となる汎用の融着継手を
示す部分破断側面図である。
【図４】融着継手の他の実施例を示す正面図、平面図お
よび断面図である。
【図５】融着継手のさらに他の実施例を示す断面図であ
る。
【符号の説明】
１ やりとり施工用融着継手 １０ やりとり施工用融着継手 ２ 受口部材（融着部材） ２０ 融着部 ２２ コイル ３ ビード ４ 樹脂管 ５ 片受直管（融着部材） ６ 融着継手（融着部材）

Claims (1)

    (57)【特許請求の範囲】
  1. 【請求項１】 樹脂管の端部が嵌合可能となされるとと
    もに、その内周面に発熱するコイルが埋設されてなる融
    着部を具備する各種融着部材から、融着部のみを切除
    し、この切除した融着部同士を突き合わせ溶接し、内周
    面のビードを切削処理することを特徴とする融着継手の
    製造方法。
JP06668993A 1993-03-25 1993-03-25 融着継手の製造方法 Expired - Fee Related JP3233722B2 (ja)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Publications (2)

Publication Number Publication Date
JPH06270255A JPH06270255A (ja) 1994-09-27
JP3233722B2 true JP3233722B2 (ja) 2001-11-26

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Publication number Priority date Publication date Assignee Title
DE10047475A1 (de) * 2000-09-21 2002-04-11 Georg Fischer Wavin Ag Subinge Schweissteile aus Kunststoff

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