JP2590406Y2 - Electric welding pipe fittings - Google Patents

Electric welding pipe fittings

Info

Publication number
JP2590406Y2
JP2590406Y2 JP1993031160U JP3116093U JP2590406Y2 JP 2590406 Y2 JP2590406 Y2 JP 2590406Y2 JP 1993031160 U JP1993031160 U JP 1993031160U JP 3116093 U JP3116093 U JP 3116093U JP 2590406 Y2 JP2590406 Y2 JP 2590406Y2
Authority
JP
Japan
Prior art keywords
heating wire
electric welding
welding pipe
synthetic resin
peripheral surface
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
JP1993031160U
Other languages
Japanese (ja)
Other versions
JPH072697U (en
Inventor
治 甲田
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 JP1993031160U priority Critical patent/JP2590406Y2/en
Publication of JPH072697U publication Critical patent/JPH072697U/en
Application granted granted Critical
Publication of JP2590406Y2 publication Critical patent/JP2590406Y2/en
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
    • B29C65/3424—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 said at least a single wire having the form of a coil spring
    • 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
    • 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

Description

【考案の詳細な説明】[Detailed description of the invention]

【０００１】[0001]

【産業上の利用分野】本考案は、受口内周面に埋設した
電熱線を発熱させるだけで合成樹脂管を融着接合できる
電気融着用管継手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric welding pipe joint capable of fusing and joining a synthetic resin pipe only by generating heat from a heating wire embedded in an inner peripheral surface of a receiving port.

【０００２】[0002]

【従来の技術】ポリエチレン等の合成樹脂管を接続する
場合、従来から合成樹脂製継手本体の受口内周面に電熱
線を埋設した管継手が使用されており、該受口に合成樹
脂管の端部を嵌挿してから電熱線を発熱させて融着接合
している。2. Description of the Related Art When connecting a synthetic resin pipe made of polyethylene or the like, a pipe joint in which a heating wire is buried on the inner peripheral surface of a receiving port of a synthetic resin fitting body has been conventionally used. After the end is inserted, the heating wire is heated to fuse and join.

【０００３】[0003]

【考案が解決しようとする課題】しかしながら、従来の
電気融着用管継手は、直状の電熱線を螺旋状に巻回して
これを受口内周面に埋設していたので、電熱線が発熱し
て熱膨張したとき隣接する電熱線同志が接触して短絡す
ることがあった。従って、電熱線が短絡した部分では合
成樹脂が過度に加熱されるため均一に溶融せず、強固な
融着接合が得られないという問題があった。一方、特公
平４ー５８７６号公報には、電熱線を軸線方向に曲がり
くねらせながら螺旋状に埋設したものが提案されている
が、この管継手の場合も電熱線が熱膨張したときに隣接
する電熱線同志が接触する危険性があった。However, in the conventional electric welding pipe joint, since a straight heating wire is spirally wound and buried in the inner peripheral surface of the receiving port, the heating wire generates heat. When thermal expansion occurs, adjacent heating wires may come into contact with each other and cause a short circuit. Therefore, there is a problem that the synthetic resin is excessively heated in the portion where the heating wire is short-circuited, so that the resin is not uniformly melted and a strong fusion bonding cannot be obtained. On the other hand, Japanese Patent Publication No. Hei 4-5876 proposes that a heating wire is helically buried while winding in the axial direction. There was a danger of hot wires coming into contact with each other.

【０００４】本考案はかかる課題を解決したものであっ
て、電熱線が熱膨張したとき隣接する電熱線同志が短絡
する虞れがなく、強固な融着接合が得られる電気融着継
手を提供するものである。The present invention has been made to solve such a problem, and provides an electric fusion joint in which a strong fusion bonding can be obtained without a risk that adjacent heating wires are short-circuited when the heating wire is thermally expanded. Is what you do.

【０００５】[0005]

【課題を解決するための手段】本考案は、コイル巻きし
た電熱線を受口内周面に所定の間隔をもって螺旋状に埋
設したことを特徴とするものである。The present invention is characterized in that a heating wire wound by a coil is helically embedded at a predetermined interval in an inner peripheral surface of a receiving port.

【０００６】[0006]

【作用】電熱線の熱膨張がコイルによって吸収されるた
め、受口に合成樹脂管を嵌挿してから電熱線を発熱させ
たとき、隣接する電熱線同志が接触することはない。Since the thermal expansion of the heating wire is absorbed by the coil, when the heating wire is heated after the synthetic resin tube is inserted into the receptacle, the adjacent heating wires do not come into contact with each other.

【０００７】[0007]

【実施例】以下、本考案の実施例を図面にて詳細に説明
する。図１は本考案の一実施例を示す電気融着用管継手
の縦断面図、図２は電熱線の要部を示す斜視図であっ
て、図中１はポリエチレン樹脂、ポリプロピレン樹脂、
ポリブテン樹脂等の合成樹脂からなる継手本体、２はニ
ッケルークロム、銅ーニッケル等からなる電熱線であ
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a longitudinal sectional view of an electric fusion fitting according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a main part of a heating wire, wherein 1 is a polyethylene resin, a polypropylene resin,
The joint body 2 made of a synthetic resin such as polybutene resin is a heating wire made of nickel-chromium, copper-nickel, or the like.

【０００８】継手本体１の両端部には受口１１が設けら
れており、該受口１１の内周面に電熱線２が所定間隔で
螺旋状に埋設されている。また電熱線２の両端部は継手
本体１の外面に設けたコネクター１２のピン３と接続し
ている。前記電熱線２は直状のものをコイル状に巻回し
たものであって、このコイル巻きした電熱線２を若干引
き伸ばして収縮可能な状態で螺旋状に巻回し、これを受
口１１の内周面に埋設したものである。尚、コイルの径
寸法ｄは電熱線２の線径に応じて適宜設定することがで
きるが、例えば線径が０．３〜１．０ｍｍの電熱線２を
使用する場合にはコイルの径寸法ｄを３ｍｍ程度に設定
するとよい。Receiving ports 11 are provided at both ends of the joint body 1, and heating wires 2 are helically embedded at predetermined intervals in the inner peripheral surface of the receiving port 11. Both ends of the heating wire 2 are connected to pins 3 of a connector 12 provided on the outer surface of the joint body 1. The heating wire 2 is obtained by winding a straight wire into a coil shape. The heating wire 2 wound by the coil is slightly stretched and spirally wound in a contractible state. It is buried in the peripheral surface. The diameter d of the coil can be appropriately set according to the diameter of the heating wire 2. For example, when the heating wire 2 having a diameter of 0.3 to 1.0 mm is used, the diameter d of the coil d may be set to about 3 mm.

【０００９】本考案の電気融着用管継手は以上の構成か
らなるものであって、この管継手に合成樹脂管を接続す
る場合、まず継手本体１のそれぞれの受口１１に合成樹
脂管の端部を嵌挿する。そこで、コネクター１２のピン
３に電源と接続したプラグを接続し（図示せず）、電熱
線２に通電して発熱させると受口１１の内周面と合成樹
脂管の端部外周面とが同時に溶融して融着接合する。こ
の融着接合の際に電熱線２は発熱して伸長するが、この
熱膨張は電熱線２のコイルによって吸収されるため、隣
接する電熱線２同志が接触して短絡することはない。こ
のため、双方の接合面は均一に加熱されて強固に融着接
合する。The pipe joint for electric fusion according to the present invention is constructed as described above. When connecting a synthetic resin pipe to the pipe joint, first, the end of the synthetic resin pipe is connected to each of the sockets 11 of the joint body 1. Insert the part. Therefore, when a plug connected to a power supply is connected to the pin 3 of the connector 12 (not shown), and the heating wire 2 is energized to generate heat, the inner peripheral surface of the receptacle 11 and the outer peripheral surface of the end of the synthetic resin pipe are connected. At the same time, they are melted and fused. At the time of this fusion bonding, the heating wire 2 generates heat and expands. However, since this thermal expansion is absorbed by the coil of the heating wire 2, adjacent heating wires 2 do not come into contact with each other and short-circuit. For this reason, both joint surfaces are heated uniformly and are firmly fusion-bonded.

【００１０】[0010]

【考案の効果】以上詳述した如く、本考案の管継手はコ
イル巻きした電熱線を受口内周面に埋設したので、該電
熱線の発熱による熱膨張がコイルによって吸収されるた
め隣接する電熱線同志が短絡することがなく、強固な融
着接合が得られる。従って、本考案の電気融着用管継手
を使用すると、融着不良に起因する管内流体の漏洩事故
が発生する虞れは全くない。As described in detail above, the pipe joint of the present invention has a coil-wound heating wire embedded in the inner peripheral surface of the receiving port. Strong fusion bonding can be obtained without short-circuiting between the heat wires. Therefore, the use of the electric welding pipe joint of the present invention does not cause any risk of leakage of the fluid in the pipe due to poor welding.

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

【図１】図１は本考案の一実施例を示す電気融着用管継
手の縦断面図である。FIG. 1 is a longitudinal sectional view of an electric welding pipe joint showing one embodiment of the present invention.

【図２】図２は電熱線の要部を示す斜視図である。FIG. 2 is a perspective view showing a main part of a heating wire.

【符号の説明】[Explanation of symbols]

１ 合成樹脂製継手本体 ２ 電熱線 ３ ピン ２１ コネクター 1 Joint body made of synthetic resin 2 Heating wire 3 Pin 21 Connector

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項１】 コイル巻きした電熱線を合成樹脂製継手
本体の受口内周面に所定間隔をもって螺旋状に埋設した
ことを特徴とする電気融着用管継手。An electric welding pipe joint characterized in that a heating wire wound with a coil is helically embedded at a predetermined interval in an inner peripheral surface of a receiving port of a synthetic resin joint body.
JP1993031160U 1993-06-10 1993-06-10 Electric welding pipe fittings Expired - Fee Related JP2590406Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1993031160U JP2590406Y2 (en) 1993-06-10 1993-06-10 Electric welding pipe fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1993031160U JP2590406Y2 (en) 1993-06-10 1993-06-10 Electric welding pipe fittings

Publications (2)

Publication Number Publication Date
JPH072697U JPH072697U (en) 1995-01-13
JP2590406Y2 true JP2590406Y2 (en) 1999-02-17

Family

ID=12323700

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1993031160U Expired - Fee Related JP2590406Y2 (en) 1993-06-10 1993-06-10 Electric welding pipe fittings

Country Status (1)

Country Link
JP (1) JP2590406Y2 (en)

Also Published As

Publication number Publication date
JPH072697U (en) 1995-01-13

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