JPH07332571A - Synthetic resin pipe with heating wire - Google Patents

Synthetic resin pipe with heating wire

Info

Publication number
JPH07332571A
JPH07332571A JP6118917A JP11891794A JPH07332571A JP H07332571 A JPH07332571 A JP H07332571A JP 6118917 A JP6118917 A JP 6118917A JP 11891794 A JP11891794 A JP 11891794A JP H07332571 A JPH07332571 A JP H07332571A
Authority
JP
Japan
Prior art keywords
synthetic resin
resin pipe
peripheral surface
heating wire
receiving port
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
JP6118917A
Other languages
Japanese (ja)
Inventor
Kazunori Umeda
一徳 梅田
Osamu Koda
治 甲田
Ryuichiro Nakamura
隆一郎 中村
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.)
Mitsubishi Plastics Inc
Original Assignee
Mitsubishi Plastics Inc
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 Mitsubishi Plastics Inc filed Critical Mitsubishi Plastics Inc
Priority to JP6118917A priority Critical patent/JPH07332571A/en
Publication of JPH07332571A publication Critical patent/JPH07332571A/en
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
    • B29C66/5229—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
    • 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
    • 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
    • B29C66/122—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
    • B29C66/01—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
    • B29C66/12—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
    • B29C66/1286—Stepped joint cross-sections 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
    • B29C66/50—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/02—Welded joints; Adhesive joints
    • F16L47/03—Welded joints with an electrical resistance incorporated in the joint
    • 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

Landscapes

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

Abstract

PURPOSE:To provide a synthetic resin pipe which can obtain positive and firm fusion jointing. CONSTITUTION:A diameter enlarged socket 11 is provided at one end part of a synthetic resin pipe 1. The inner peripheral surface of the socket 11 is formed into a tapered face 12 with the inner diameter enlarged toward the opening side from the innermost part, and heating wires 2 are embedded spirally at specified spaces in the tapered face 12. The other end part outer peripheral surface of the synthetic resin pipe 1 is provided with a tapered face 13 having a gradient almost equal to that of the tapered face 12 of the inner peripheral surface of the socket 11. The tapered faces thereby adhere closely to each other without a gap so as to obtain firm fusion jointing.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、電熱線を発熱させて融
着接合できる合成樹脂管に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin tube which can be fusion-bonded by heating a heating wire.

【０００２】[0002]

【従来の技術】上下水道管、ガス管等の配管材として、
従来から合成樹脂管の一端に拡径受口を設けて該受口の
内周面に電熱線を埋設したものが用いられている。そし
て、この合成樹脂管による配管施工の場合には、一方の
合成樹脂管の拡径受口に他方の合成樹脂管の端部を嵌挿
して順次接続してから電熱線を発熱させて融着接合して
いた。2. Description of the Related Art As piping materials for water and sewer pipes, gas pipes, etc.
2. Description of the Related Art Conventionally, there has been used a synthetic resin tube provided with an expanded diameter receiving port at one end and having a heating wire embedded in the inner peripheral surface of the receiving port. Then, in the case of piping construction using this synthetic resin pipe, the end portion of the other synthetic resin pipe is inserted into the expanded diameter receiving port of one synthetic resin pipe and sequentially connected, and then the heating wire is heated to fuse. It was joined.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、この従
来の合成樹脂管は、受口内周面の内径が奥部と開口側で
等しい平行面となっていたので、該受口に外径寸法にバ
ラツキのある合成樹脂管を嵌挿したとき、受口内周面と
管端部外周面との間に隙間ができるため強固な融着接合
が得られないことがあった。本発明は、かかる課題を解
決したものであって、電熱線を発熱させるだけで確実か
つ強固な融着接合が得られる合成樹脂管を提供するもの
である。However, in this conventional synthetic resin pipe, since the inner diameter of the inner peripheral surface of the receiving port is a parallel surface on the inner side and the opening side are parallel, the outer diameter of the receiving port varies. When a synthetic resin tube having a certain shape is fitted and inserted, a strong fusion bond may not be obtained because a gap is formed between the inner peripheral surface of the receiving port and the outer peripheral surface of the tube end portion. The present invention has solved the above problems, and provides a synthetic resin tube capable of achieving reliable and strong fusion-bonding only by heating a heating wire.

【０００４】[0004]

【課題を解決するための手段】本発明は、合成樹脂管の
一端部に拡径受口を設け、該受口の内周面を奥部から開
口側に向かって内径が拡大したテーパ面に形成すると共
に、該テーパ面に電熱線を所定間隔で螺旋状に埋設し、
また合成樹脂管の他端部外周面に受口内周面のテーパ面
とほぼ等しい勾配をもったテーパ面を設けたことを特徴
とする。According to the present invention, a diameter-increasing receiving port is provided at one end of a synthetic resin pipe, and the inner peripheral surface of the receiving port is a tapered surface whose inner diameter increases from the inner side toward the opening side. Along with forming, heating wire is embedded in the tapered surface in a spiral shape at a predetermined interval,
In addition, the other end of the synthetic resin pipe is characterized in that a taper surface having a slope substantially equal to the taper surface of the inner peripheral surface of the receiving port is provided.

【０００５】[0005]

【作用】上記の構成からなるので、配管施工の際に一方
の合成樹脂管の拡径受口に他方の合成樹脂管の端部を挿
入すると、テーパ面同志が隙間なく密着する。そこで、
受口内周面に埋設した電熱線を発熱させると、テーパ面
同志が溶融して融着接合する。With the above construction, when the end portion of the other synthetic resin pipe is inserted into the expanded diameter receiving port of the one synthetic resin pipe at the time of piping construction, the tapered surfaces are brought into close contact with each other without a gap. Therefore,
When the heating wire embedded in the inner peripheral surface of the receiving port is heated, the taper surfaces melt and fuse together.

【０００６】[0006]

【実施例】以下、本発明の実施例を図面にて詳細に説明
する。図１は本発明の一実施例を示す合成樹脂管の半断
面図、図２は他の実施例を示す合成樹脂管の半断面図で
あって、図中１はポリエチレン、ポリブテン等からなる
合成樹脂管、２はニクロム線等からなる電熱線である。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a half cross-sectional view of a synthetic resin pipe showing an embodiment of the present invention, and FIG. 2 is a half cross-sectional view of a synthetic resin pipe showing another embodiment. In FIG. 1, reference numeral 1 is a synthetic material made of polyethylene, polybutene or the like. The resin tube 2 is a heating wire made of a nichrome wire or the like.

【０００７】合成樹脂管１は一端部に拡径受口１１を有
し、該受口１１の内周面には奥部から開口側に向かって
内径が拡大したテーパ面１２が形成されており、該テー
パ面１２に電熱線２が所定間隔で螺旋状に埋設されてい
る。電熱線２の両端部は受口１１の外周面に設けたコネ
クター３の端子ピン３１と接続している。また、合成樹
脂管１の外周面には前記受口内周面のテーパ面１２とほ
ぼ等しい勾配をもったテーパ面１３と、該テーパ面１３
と等しい勾配をもった逆方向のテーパ面１３ａとが繰り
返し連続して設けられており、その他端部外周面が先窄
まりのテーパ面１３となっている。The synthetic resin pipe 1 has a diameter-increasing receiving port 11 at one end, and a tapered surface 12 whose inner diameter increases from the inner part toward the opening side is formed on the inner peripheral surface of the receiving port 11. The heating wire 2 is embedded in the tapered surface 12 in a spiral shape at a predetermined interval. Both ends of the heating wire 2 are connected to the terminal pins 31 of the connector 3 provided on the outer peripheral surface of the receptacle 11. Further, on the outer peripheral surface of the synthetic resin pipe 1, there is provided a taper surface 13 having a slope substantially equal to that of the taper surface 12 of the inner peripheral surface of the receiving port, and the taper surface 13.
And a taper surface 13a in the opposite direction having a gradient equal to that are repeatedly provided continuously, and the outer peripheral surface at the other end is a tapered surface 13 having a tapered end.

【０００８】この合成樹脂管１を用いて配管施工を行な
う場合、一方の合成樹脂管１の拡径受口１１に他方の合
成樹脂管１の端部を嵌挿し、受口１１のテーパ面１２と
管端部のテーパ面１３とを密着嵌合させる。そこで、コ
ネクター３の端子ピン３１に電源コードを接続して電熱
線２に通電すると、該電熱線２が発熱して双方のテーパ
面１２，１３が溶融して強固に融着接合する。When performing piping construction using this synthetic resin pipe 1, the end portion of the other synthetic resin pipe 1 is fitted into the expanded diameter receiving port 11 of one synthetic resin pipe 1 and the tapered surface 12 of the receiving port 11 is inserted. And the taper surface 13 of the pipe end are closely fitted. Therefore, when a power cord is connected to the terminal pin 31 of the connector 3 and the heating wire 2 is energized, the heating wire 2 generates heat and both the tapered surfaces 12 and 13 are melted and firmly fused and joined.

【０００９】この配管施工の際に、一方の合成樹脂管１
を所望長さに切断し、その管端部のテーパ面１３を他方
の合成樹脂管１の受口１１に密着嵌合させて融着接合す
ることもできる。また、場合によっては図２に示した如
く、双方の合成樹脂管１の受口１１を向き合わせ、それ
ぞれの受口１１，１１にテーパ面１３と逆テーパ面１３
ａとを有する短管ａを介在させて融着接合することも可
能である。At the time of this pipe construction, one synthetic resin pipe 1
Can be cut into a desired length, and the taper surface 13 of the end of the pipe can be tightly fitted to the receiving port 11 of the other synthetic resin pipe 1 for fusion bonding. Depending on the case, as shown in FIG. 2, the receiving ports 11 of both synthetic resin pipes 1 are faced to each other, and the tapered faces 13 and the reverse taper faces 13 are formed on the respective receiving ports 11, 11.
It is also possible to perform fusion bonding by interposing a short tube a having a and a.

【００１０】[0010]

【発明の効果】以上詳述した如く、本発明は合成樹脂管
の一端部に拡径受口を設けてその内周に形成したテーパ
面に電熱線を埋設し、また他端部外周面に前記テーパ面
とほぼ等しい勾配をもったテーパ面を設けたので、配管
施工の際に一方の合成樹脂管の拡径受口に他方の合成樹
脂管の端部を密着嵌合させて強固に融着接合することが
できる。As described in detail above, according to the present invention, a diameter-increasing receiving port is provided at one end of a synthetic resin pipe, and a heating wire is embedded in a tapered surface formed on the inner circumference of the synthetic resin pipe, and an outer peripheral surface of the other end is provided. Since a tapered surface having a slope almost equal to that of the tapered surface is provided, the end portion of the other synthetic resin pipe is closely fitted to the expanding port of the one synthetic resin pipe during pipe construction to firmly melt the pipe. It can be bonded to each other.

【図面の簡単な説明】[Brief description of drawings]

【図１】図１は本発明の一実施例を示す合成樹脂管の半
断面図である。FIG. 1 is a half sectional view of a synthetic resin pipe showing an embodiment of the present invention.

【図２】図２は本発明の他の実施例を示す合成樹脂管の
半断面図である。FIG. 2 is a half sectional view of a synthetic resin pipe showing another embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１ 合成樹脂管 ２ 電熱線 ３ コネクター １１ 拡径受口 １２ テーパ面 １３，１３ａ テーパ面 1 Synthetic Resin Pipe 2 Heating Wire 3 Connector 11 Expanding Port 12 Tapered Surface 13, 13a Tapered Surface

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 合成樹脂管（１）の一端部に拡径受口
（１１）を設け、該受口（１１）の内周面を奥部から開
口側に向かって内径が拡大したテーパ面（１２）に形成
すると共に、該テーパ面（１２）に電熱線（２）を所定
間隔で螺旋状に埋設し、また合成樹脂管（１）の他端部
外周面に受口内周面のテーパ面（１２）とほぼ等しい勾
配をもったテーパ面（１３）を設けたことを特徴とする
電熱線を備えた合成樹脂管。1. A taper surface in which an expanded diameter receiving port (11) is provided at one end of a synthetic resin pipe (1), and the inner peripheral surface of the receiving port (11) is increased in inner diameter from the inner side toward the opening side. (12), the heating wire (2) is embedded in the tapered surface (12) in a spiral shape at a predetermined interval, and the taper of the inner peripheral surface of the receiving port is formed on the outer peripheral surface of the other end of the synthetic resin pipe (1). A synthetic resin tube provided with a heating wire, characterized in that a tapered surface (13) having a slope substantially equal to that of the surface (12) is provided.
JP6118917A 1994-05-31 1994-05-31 Synthetic resin pipe with heating wire Pending JPH07332571A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6118917A JPH07332571A (en) 1994-05-31 1994-05-31 Synthetic resin pipe with heating wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6118917A JPH07332571A (en) 1994-05-31 1994-05-31 Synthetic resin pipe with heating wire

Publications (1)

Publication Number Publication Date
JPH07332571A true JPH07332571A (en) 1995-12-22

Family

ID=14748383

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6118917A Pending JPH07332571A (en) 1994-05-31 1994-05-31 Synthetic resin pipe with heating wire

Country Status (1)

Country Link
JP (1) JPH07332571A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6781099B2 (en) 2001-03-12 2004-08-24 Karl-Heinz Krah Gmbh Electrofusion socket forming system
EP1577077A2 (en) * 2004-03-16 2005-09-21 Harbin Institute of Technology Starway Industrial Co. Ltd. Piping made of steel mesh reinforced plastic composite pipe and method for making the pipe
EP2813349A3 (en) * 2013-06-11 2015-02-25 Stang GmbH Pipe joint for thermoplastic plastic pipes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6781099B2 (en) 2001-03-12 2004-08-24 Karl-Heinz Krah Gmbh Electrofusion socket forming system
US7144045B2 (en) 2001-03-12 2006-12-05 Karl-Heinz Krah Gmbh Electrofusion socket forming system
US7767938B2 (en) 2001-03-12 2010-08-03 Karl-Heinz Krah Gmbh Electrofusion socket forming system
EP1577077A2 (en) * 2004-03-16 2005-09-21 Harbin Institute of Technology Starway Industrial Co. Ltd. Piping made of steel mesh reinforced plastic composite pipe and method for making the pipe
EP1577077A3 (en) * 2004-03-16 2008-01-02 Harbin Institute of Technology Starway Industrial Co. Ltd. Piping made of steel mesh reinforced plastic composite pipe and method for making the pipe
EP2813349A3 (en) * 2013-06-11 2015-02-25 Stang GmbH Pipe joint for thermoplastic plastic pipes

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