JPH08135876A - Electric fusion joint - Google Patents
Electric fusion jointInfo
- Publication number
- JPH08135876A JPH08135876A JP27665894A JP27665894A JPH08135876A JP H08135876 A JPH08135876 A JP H08135876A JP 27665894 A JP27665894 A JP 27665894A JP 27665894 A JP27665894 A JP 27665894A JP H08135876 A JPH08135876 A JP H08135876A
- Authority
- JP
- Japan
- Prior art keywords
- terminal pin
- joint
- heating wire
- energization
- fusion
- 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
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"
- B29C65/3468—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
- B29C66/50—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
- B29C66/90—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
- 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
- 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
- B29C66/94—Measuring or controlling the joining process by measuring or controlling the 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
- B29C66/96—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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
(57)【要約】
【目的】 電熱線への通電時間を最適に設定して強固な
融着接合が得られると共に、融着接合が完了しているこ
との確認が行なえる電気融着継手を提供する。
【構成】 合成樹脂製継手本体１の接合面に埋設した電
熱線２の両端部を継手本体１の外面に突設したそれぞれ
の端子ピン３ａ，３ｂに接続する。そして、一方の端子
ピン３ａに接近して補助端子ピン３１ａを設けると共
に、該補助端子ピン３１ａと前記端子ピン３ａとの間に
抵抗体Ａを介在させる。また、他方の端子ピン３ｂに接
近して補助端子ピン３１ｂを設けると共に、該補助端子
ピン３１ｂと前記端子ピン３ｂとの間に一度の通電によ
って再度の通電が遮断されるリレー素子Ｂを介在させ
る。
【効果】 強固な融着接合が得られ、また融着接合の確
認が行える。
(57) [Abstract] [Purpose] An electric fusion splicing joint that can confirm the completion of fusion splicing while obtaining a strong fusion splicing by optimally setting the energization time to the heating wire. provide. [Structure] Both ends of a heating wire 2 buried in a joint surface of a synthetic resin joint body 1 are connected to respective terminal pins 3a and 3b projecting from the outer surface of the joint body 1. Then, the auxiliary terminal pin 31a is provided close to the one terminal pin 3a, and the resistor A is interposed between the auxiliary terminal pin 31a and the terminal pin 3a. Further, the auxiliary terminal pin 31b is provided close to the other terminal pin 3b, and the relay element B, which is cut off from the re-energization by one energization, is interposed between the auxiliary terminal pin 31b and the terminal pin 3b. . [Effect] Strong fusion bonding can be obtained, and fusion bonding can be confirmed.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、合成樹脂製継手本体の
内周面に電熱線を埋設した電気融着継手に関し、更に詳
しくは電熱線への通電時間等を最適に設定して強固な融
着接合が得られる電気融着継手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric fusion joint in which a heating wire is embedded in the inner peripheral surface of a synthetic resin joint body, and more specifically, it is made strong by optimally setting the energization time to the heating wire. The present invention relates to an electric fusion joint capable of obtaining fusion bonding.
【０００２】[0002]
【従来の技術とその課題】合成樹脂からなるガス管や給
水・給湯管の接続には、継手本体の内周面に電熱線を埋
設した電気融着継手が用いられている。この電気融着継
手による合成樹脂管の接続の場合は、合成樹脂管の端部
を継手に嵌挿してから電熱線に通電し、発熱した電熱線
で接合面の樹脂を溶融させて接合していた。ところが、
電熱線への通電時間が長くなると過加熱によって樹脂が
劣化し、強固な融着接合が得られないことがあり、また
通電時間が短かすぎると接合面の樹脂が十分に溶融しな
いことによって融着不良が起きることがあった。2. Description of the Related Art An electric fusion-bonded joint having a heating wire embedded in the inner peripheral surface of a joint body is used to connect a gas pipe made of synthetic resin and a water supply / hot water supply pipe. In the case of connecting synthetic resin pipes by this electric fusion joint, the ends of the synthetic resin pipes are inserted into the joints, then the heating wires are energized, and the heating wires that have generated heat melt the resin on the joint surface to join them. It was However,
If the heating wire is energized for a long time, the resin may deteriorate due to overheating and a strong fusion bond may not be obtained.If the energization time is too short, the resin on the bonding surface may not melt sufficiently Poor dressing sometimes occurred.
【０００３】そこで、電熱線への通電時間を最適に設定
するために、特公平５ー３９１７７号には、熱電対で継
手本体の温度を計測して所定温度よりも高くなったとき
に電熱線への通電を停止するようにしたものが提案され
いる。しかしながら、この温度計測よる場合は、周囲の
環境温度をも考慮しているものの、溶融樹脂から離れた
位置の温度を計測することになるため、最適な溶融状態
のときに通電を停止するのが困難であった。Therefore, in order to optimally set the energization time to the heating wire, Japanese Examined Patent Publication No. 5-39177 discloses that the temperature of the joint body is measured by a thermocouple and the heating wire becomes higher than a predetermined temperature. It has been proposed to stop energization to. However, in the case of this temperature measurement, although the surrounding environmental temperature is also taken into consideration, the temperature at a position away from the molten resin is measured, so it is possible to stop the energization in the optimum molten state. It was difficult.
【０００４】また、特開平３ー１７８４２６号には、電
熱線の近傍に達する環状溝を穿設し、該環状溝の中央部
に位置する円柱芯が継手の表面から突出する度合いを圧
力センサーで検知して通電を停止する方法が提案されて
いるが、溶融樹脂の圧力から最適な溶融状態を推定して
通電を停止する方法も実際には問題があった。Further, in Japanese Patent Laid-Open No. 3-178426, an annular groove is formed to reach the vicinity of the heating wire, and a pressure sensor measures the degree to which a cylindrical core located at the center of the annular groove protrudes from the surface of the joint. Although a method of detecting and stopping energization has been proposed, a method of estimating the optimum molten state from the pressure of the molten resin and stopping energization also has a problem.
【０００５】更に、特公平１ー４０７４３号、特開平２
ー１２９４９３号等には、端子ピンに接近して補助端子
ピンを設けると共に、該補助端子ピンと前記端子ピンと
の間に抵抗体を介在させ、該抵抗体から継手のサイズを
検知して、継手のサイズに応じて予め定められた電流を
電熱線に所定時間通電するようにした継手が提案されて
いる。ところが、この継手の場合には、強固な融着接合
が得られるものの、現場での配管施工の際に合成樹脂管
と継手との融着接合が完了していることの確認が行なえ
ないという問題があった。このため、既に融着接合が完
了しているにもかかわらず、作業者が再度電熱線に通電
すると融着部の樹脂が過度に加熱されて劣化し、融着不
良が起きることがあった。Further, Japanese Examined Patent Publication No. 1-40743 and Japanese Patent Laid-Open No. Hei 2
In No. 129493, etc., an auxiliary terminal pin is provided close to the terminal pin, a resistor is interposed between the auxiliary terminal pin and the terminal pin, the size of the joint is detected from the resistor, and the joint A joint has been proposed in which a heating current is applied to a heating wire for a predetermined time depending on the size. However, in the case of this joint, although a strong fusion-bonding can be obtained, it is impossible to confirm that fusion-bonding of the synthetic resin pipe and the joint has been completed during on-site piping construction. was there. For this reason, although the fusion bonding has already been completed, when the worker re-energizes the heating wire, the resin in the fusion bonded portion may be excessively heated and deteriorated, resulting in defective fusion bonding.
【０００６】本発明はかかる課題を解決したものであっ
て、電熱線への通電時間を最適に設定して強固な融着接
合が得られると共に、融着接合が完了していることの確
認が行なえる電気融着継手を提供するものである。The present invention has solved the above-mentioned problems. It is possible to obtain a strong fusion-bonding by optimally setting the energization time to the heating wire and to confirm that the fusion-bonding is completed. The present invention provides an electric fusion splicing joint that can be performed.
【０００７】[0007]
【課題を解決するための手段】本発明は、合成樹脂製継
手本体の接合面に電熱線を埋設すると共に、該電熱線の
両端部を継手本体の外面に突設したそれぞれの端子ピン
に接続し、一方の端子ピンに接近して補助端子ピンを設
けると共に、該補助端子ピンと前記端子ピンとの間に抵
抗体を介在させる。また、他方の端子ピンに接近して補
助端子ピンを設けると共に、該補助端子ピンと前記端子
ピンとの間に一度の通電によって再度の通電が遮断され
るリレー素子を介在させたことを特徴とする。According to the present invention, a heating wire is embedded in a joint surface of a synthetic resin joint body, and both ends of the heating wire are connected to respective terminal pins protruding from the outer surface of the joint body. Then, the auxiliary terminal pin is provided close to one of the terminal pins, and the resistor is interposed between the auxiliary terminal pin and the terminal pin. In addition, the auxiliary terminal pin is provided close to the other terminal pin, and a relay element that interrupts re-energization by one energization is interposed between the auxiliary terminal pin and the terminal pin.
【０００８】[0008]
【作用】現場での接続作業の際に、継手の両端部に合成
樹脂管の端部を嵌挿してからそれぞれの補助端子ピンに
通電すると、電熱線の回路が導通していることを確認す
ることができる。この最初の通電によって、他方の端子
ピンと補助端子ピンとの間に介在しているリレー素子へ
の再度の通電が遮断される。次に、一方の端子ピンと補
助端子ピンとの間に介在している抵抗体に通電すると、
前記抵抗体から継手のサイズが検知でき、該継手の電熱
線に最適な電流と通電時間が制御装置に自動的にセット
される。そこで、それぞれの端子ピンに通電すると電熱
線が発熱し、接合面の樹脂が適度に溶融してから電熱線
への通電が停止する。[Operation] At the time of connection work at the site, if the ends of the synthetic resin pipes are inserted into both ends of the joint and then each auxiliary terminal pin is energized, it is confirmed that the circuit of the heating wire is conducting. be able to. By this first energization, the re-energization to the relay element interposed between the other terminal pin and the auxiliary terminal pin is interrupted. Next, when the resistor interposed between the one terminal pin and the auxiliary terminal pin is energized,
The size of the joint can be detected from the resistor, and the optimum current and energizing time for the heating wire of the joint are automatically set in the controller. Therefore, when the respective terminal pins are energized, the heating wire generates heat, and the energization to the heating wire is stopped after the resin on the joint surface is appropriately melted.
【０００９】また、合成樹脂管と継手とを融着接合する
ための通電が完了しているか否かの確認を行なうとき、
他方の端子ピンと補助端子ピンとの間に介在しているリ
レー素子に通電すると、該リレー素子への通電が遮断さ
れていることを検知して融着接合が完了していることを
確認できる。Further, when confirming whether the energization for fusion-bonding the synthetic resin pipe and the joint is completed,
When the relay element interposed between the other terminal pin and the auxiliary terminal pin is energized, it is possible to detect that the energization to the relay element is cut off and confirm that the fusion bonding is completed.
【００１０】[0010]
【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電気融着継手の断
面図、図２は電気融着継手に合成樹脂管を接続する手順
を示す要部断面図、図３は本発明の他の実施例を示す電
気融着継手の断面図であって、図中１はポリエチレン、
ポリブテン等の合成樹脂からなる継手本体、２は電熱線
である。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a sectional view of an electric fusion joint showing an embodiment of the present invention, FIG. 2 is a sectional view of an essential portion showing a procedure for connecting a synthetic resin pipe to the electric fusion joint, and FIG. 3 is another embodiment of the present invention. FIG. 1 is a cross-sectional view of an electric fusion joint showing an example, in which 1 is polyethylene,
A joint body 2 made of synthetic resin such as polybutene is a heating wire.
【００１１】継手本体１はインジェクションによって一
体成形されるものであって、円筒状をなす継手本体１の
内周面には軸芯方向に所定間隔を保ってニクロム線等の
電熱線２が螺旋状に埋設されており、該電熱線２の両端
部は継手本体１の外面に突出した端子ピン３ａ，３ｂの
下端部に接続している。この電熱線２は継手のサイズに
応じて線径、コイルの巻数等が一定に設定されており、
一定サイズの継手に所定の電流を一定時間流したとき、
電熱線２の発熱量が常に一定になるように設定されてい
る。尚、電熱線２の線径は継手のサイズに応じて０．２
〜４．０ｍｍの範囲で適宜設定するとよい。The joint body 1 is integrally formed by injection, and a heating wire 2 such as a nichrome wire is spirally formed on the inner peripheral surface of the joint body 1 having a cylindrical shape at a predetermined interval in the axial direction. , Both ends of the heating wire 2 are connected to the lower ends of the terminal pins 3a and 3b protruding from the outer surface of the joint body 1. In this heating wire 2, the wire diameter, the number of turns of the coil, etc. are set to be constant according to the size of the joint,
When a predetermined current is applied to a joint of a certain size for a certain time,
The heating value of the heating wire 2 is set to be always constant. The wire diameter of the heating wire 2 is 0.2 depending on the size of the joint.
It is preferable to set it appropriately within a range of up to 4.0 mm.
【００１２】前記端子ピン３ａ，３ｂは円筒状に形成さ
れており、それぞれの端子ピン３ａ，３ｂの内側には絶
縁部材３２で電気的に絶縁された補助端子ピン３１ａ，
３１ｂが設けられている。そして、一方の端子ピン３ａ
と補助端子ピン３１ａとの間に継手のサイズに応じて予
め定められた抵抗値を有する抵抗体Ａが介在されてい
る。また、他方の端子ピン３ｂと補助端子ピン３１ｂと
の間には、一度の通電によって再度の通電が遮断される
機能を有するダイオード等のリレー素子Ｂが介在されて
いる。The terminal pins 3a, 3b are formed in a cylindrical shape, and auxiliary terminal pins 31a, electrically insulated by an insulating member 32, are provided inside the respective terminal pins 3a, 3b.
31b is provided. And one terminal pin 3a
A resistor A having a predetermined resistance value according to the size of the joint is interposed between the auxiliary terminal pin 31a and the auxiliary terminal pin 31a. In addition, a relay element B such as a diode having a function of interrupting re-energization by one energization is interposed between the other terminal pin 3b and the auxiliary terminal pin 31b.
【００１３】本発明の電気融着継手継手は、上記の構成
からなるものであって、次にこの継手に合成樹脂管Ｐを
融着接合する手順を説明する。まず、継手の両端部に合
成樹脂管Ｐの端部を嵌挿してから、それぞれの端子ピン
３ａ，３ｂにコネクタ４ａ，４ｂを接続する。コネクタ
４ａ，４ｂは継手本体１の外面から突出した端子ピン３
ａ，３ｂと接続するプラグ４１ａ，４１ｂと、補助端子
ピン３１ａ，３１ｂと接続するピン４２ａ，４２ｂとを
備えており、それぞれのプラグ４１ａ，４１ｂとピン４
２ａ，４２ｂとが電源コードを介して制御装置５の出力
端子Ｓ1 ，Ｓ2 ，Ｓ3 ，Ｓ4 と接続している。尚、制御
装置５は予め電源に接続しておく。The electric fusion-bonded joint of the present invention has the above-mentioned structure. Next, the procedure for fusion-bonding the synthetic resin pipe P to this joint will be described. First, the ends of the synthetic resin pipe P are fitted into both ends of the joint, and then the connectors 4a and 4b are connected to the respective terminal pins 3a and 3b. The connectors 4a and 4b are terminal pins 3 protruding from the outer surface of the joint body 1.
It is provided with plugs 41a and 41b connected to a and 3b, and pins 42a and 42b connected to the auxiliary terminal pins 31a and 31b, and the plugs 41a and 41b and the pin 4 respectively.
2a and 42b are connected to the output terminals S1, S2, S3 and S4 of the control device 5 via a power cord. The control device 5 is connected to the power supply in advance.
【００１４】次に、図２に示した如く制御装置５の出力
端子Ｓ1 ，Ｓ3 から補助端子ピン３１ａ，３１ｂに通電
し、電熱線２の回路が導通していることを確認する。こ
の最初の通電によって、他方の端子ピン３ｂと補助端子
ピン３１ｂとの間に介在しているリレー素子Ｂへの再度
の通電が遮断されることになる。Next, as shown in FIG. 2, the auxiliary terminals 31a and 31b are energized from the output terminals S1 and S3 of the control unit 5 to confirm that the circuit of the heating wire 2 is conducting. By this first energization, re-energization to the relay element B interposed between the other terminal pin 3b and the auxiliary terminal pin 31b is interrupted.
【００１５】前記操作を経て融着接合のための通電が行
なわれていないことを確認してから、制御装置５の出力
端子Ｓ1 ，Ｓ2 から端子ピン３ａと補助端子ピン３１ａ
に通電すると、抵抗体Ａの抵抗値から継手のサイズが検
知され、この継手に埋設されている電熱線２に最適な電
流と通電時間が制御装置５に自動的にセットされる。最
後に、制御装置５の出力端子Ｓ2 ，Ｓ4 から端子ピン３
ａ、３ｂに通電すると電熱線２が発熱し、接合面の樹脂
が適度に溶融したとき電熱線２への通電が停止し、合成
樹脂管Ｐと継手とが強固に融着接合する。After confirming that the energization for fusion splicing is not performed through the above operation, the terminal pins 3a and the auxiliary terminal pins 31a are output from the output terminals S1 and S2 of the control device 5.
When electricity is applied to the joint, the size of the joint is detected from the resistance value of the resistor A, and the optimum current and energization time for the heating wire 2 embedded in this joint are automatically set in the controller 5. Finally, from the output terminals S2 and S4 of the control unit 5 to the terminal pin 3
When the a and 3b are energized, the heating wire 2 generates heat, and when the resin on the joint surface is melted moderately, the energization to the heating wire 2 is stopped, and the synthetic resin pipe P and the joint are firmly fusion-bonded.
【００１６】この様にして、合成樹脂管Ｐと継手とが融
着接合した後、融着接合が完了しているか否かの確認を
行なう必要が生じた場合、制御装置５の出力端子Ｓ1 ，
Ｓ3から補助端子ピン３１ａ，３１ｂに通電する。する
と、端子ピン３ｂと補助端子ピン３１ｂとの間に介在し
ているリレー素子Ｂの通電が遮断されることを検知する
ことによって、融着接合が完了していることを確認する
ことができる。In this way, when it is necessary to confirm whether or not the fusion-bonding is completed after fusion-bonding the synthetic resin pipe P and the joint, the output terminals S1,
The auxiliary terminal pins 31a and 31b are energized from S3. Then, it is possible to confirm that the fusion-bonding is completed by detecting that the power supply to the relay element B interposed between the terminal pin 3b and the auxiliary terminal pin 31b is cut off.
【００１７】尚、前記実施例では、円筒状をなす継手本
体１の内周面に電熱線２を埋設したものを例示したが本
発明はこれに限定されない。図３に示した如く、サドル
継手１の湾曲面に電熱線２を埋設してもよく、端子ピン
３ａ、３ｂと補助端子ピン３１ａ，３１ｂは接近して別
個に設けても前記実施例と同様の効果が期待できる。In the above embodiment, the heating wire 2 is embedded in the inner peripheral surface of the joint body 1 having a cylindrical shape, but the present invention is not limited to this. As shown in FIG. 3, the heating wire 2 may be embedded in the curved surface of the saddle joint 1, and the terminal pins 3a and 3b and the auxiliary terminal pins 31a and 31b may be provided close to each other and separately from each other. The effect of can be expected.
【００１８】[0018]
【発明の効果】以上詳述した如く、本発明の電気融着継
手は継手のサイズを検知できる抵抗体を備えているの
で、継手のサイズに応じた電流を電熱線に所定時間通電
して確実、かっ強固な融着接合が得られる。また、本発
明の電気融着継手は一度の通電によって再度の通電が遮
断されるリレー素子を備えているので、融着接合が完了
しているか否かの確認を行なうことができ、再度の通電
によって樹脂が過度に加熱されて劣化することによる融
着不良を未然に防止することができる。As described above in detail, since the electric fusion splicing joint of the present invention is provided with the resistor capable of detecting the joint size, the electric current corresponding to the joint size is applied to the heating wire for a predetermined time to ensure the reliability. A strong fusion-bonding can be obtained. Further, since the electric fusion joint of the present invention is provided with the relay element in which the re-energization is interrupted by the one-time energization, it is possible to confirm whether or not the fusion bonding is completed, and the re-energization is performed. With this, it is possible to prevent the fusion failure due to excessive heating and deterioration of the resin.
【図１】図１は本発明の一実施例を示す電気融着継手の
断面図である。FIG. 1 is a cross-sectional view of an electric fusion joint showing an embodiment of the present invention.
【図２】図２は電気融着継手に合成樹脂管を接続する手
順を示す要部断面図である。FIG. 2 is a sectional view of an essential part showing a procedure for connecting a synthetic resin pipe to an electric fusion joint.
【図３】図３は本発明の他の実施例を示す電気融着継手
の断面図である。FIG. 3 is a sectional view of an electric fusion joint showing another embodiment of the present invention.
１ 継手本体 ２ 電熱線 ３ａ，３ｂ 端子ピン ３１ａ，３１ｂ 補助端子ピン ４ａ，４ｂ コネクタ ５ 制御装置 Ａ 抵抗体 Ｂ リレー素子 Ｐ 合成樹脂管 1 Joint body 2 Heating wire 3a, 3b Terminal pin 31a, 31b Auxiliary terminal pin 4a, 4b Connector 5 Control device A Resistor B Relay element P Synthetic resin pipe
Claims (2)
電線（２）を埋設すると共に、該電熱線（２）の両端部
を継手本体（１）の外面に突設したそれぞれの端子ピン
（３ａ），（３ｂ）に接続した電気融着継手であって、
一方の端子ピン（３ａ）に接近して補助端子ピン（３１
ａ）を設けると共に、該補助端子ピン（３１ａ）と前記
端子ピン（３ａ）との間に抵抗体（Ａ）を介在させ、ま
た他方の端子ピン（３ｂ）に接近して補助端子ピン（３
１ｂ）を設けると共に、該補助端子ピン（３１ｂ）と前
記端子ピン（３ｂ）との間に一度の通電によって再度の
通電が遮断されるリレー素子（Ｂ）を介在させたことを
特徴とする電気融着継手。1. A heating wire (2) is embedded in a joint surface of a synthetic resin joint body (1), and both ends of the heating wire (2) are projected on the outer surface of the joint body (1). An electric fusion joint connected to terminal pins (3a), (3b),
Auxiliary terminal pin (31
a) is provided, the resistor (A) is interposed between the auxiliary terminal pin (31a) and the terminal pin (3a), and the auxiliary terminal pin (3b) is approached to the other terminal pin (3b).
1b) is provided, and a relay element (B) that interrupts re-energization by one energization is interposed between the auxiliary terminal pin (31b) and the terminal pin (3b). Fusion joint.
ことを特徴とする請求項１記載の電気融着継手。2. The electric fusion splicing joint according to claim 1, wherein the relay element (B) comprises a diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27665894A JPH08135876A (en) | 1994-11-10 | 1994-11-10 | Electric fusion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27665894A JPH08135876A (en) | 1994-11-10 | 1994-11-10 | Electric fusion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08135876A true JPH08135876A (en) | 1996-05-31 |
Family
ID=17572524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27665894A Pending JPH08135876A (en) | 1994-11-10 | 1994-11-10 | Electric fusion joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08135876A (en) |
-
1994
- 1994-11-10 JP JP27665894A patent/JPH08135876A/en active Pending
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