JPH02196629A - Electric welding device - Google Patents

Electric welding device

Info

Publication number
JPH02196629A
JPH02196629A JP1016624A JP1662489A JPH02196629A JP H02196629 A JPH02196629 A JP H02196629A JP 1016624 A JP1016624 A JP 1016624A JP 1662489 A JP1662489 A JP 1662489A JP H02196629 A JPH02196629 A JP H02196629A
Authority
JP
Japan
Prior art keywords
power source
converted
electric welding
down transformer
power
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
JP1016624A
Other languages
Japanese (ja)
Inventor
Kenji Kawamoto
健二 川本
Jinichiro Nakamura
中村　仁一郎
Shinsuke Masuda
増田　伸介
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 JP1016624A priority Critical patent/JPH02196629A/en
Publication of JPH02196629A publication Critical patent/JPH02196629A/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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—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
    • B29C66/70—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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3468—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—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
    • B29C66/91653—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 voltage, i.e. the electric potential difference or electric tension

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To make the whole of a device compact and light in weight by converting a commercial power source into a high frequency power source and applying a step-down transformer still in the state of high frequency. CONSTITUTION:AC 100V alternating current, a commercial power source, is rectified in a thyristor diode bridge circuit 12 and formed in a single direction power source, and also smoothened by a smoothing capacitor 13 and converted into a direct current power source, and then input into a transistor switching circuit 14, converted into a high frequency alternating current therein, and then supplied into a primary winding wire 15a of a step-down transformer 15 and decreased in voltage adequately to be outputted from a secondary winding 15b. Then, the same is rectified in a following diode bridge circuit 16, smoothened by a smoothing capacitor 17, and converted into a DC 40V direct current power source, and supplied from an output terminal 18 to voltage applying terminals 3a, 3b of a heater 3 through power supply lines 1a, 1b.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、熱可塑性樹脂からなるパイプ部材と同じく熱
可塑性樹脂からなる継手部材とを接合するに当り、パイ
プ部材と接触する継手部材の表面に加熱要素が設けられ
、該加熱要素に電力供給部から電流を供給することによ
り、前記パイプ部材と前記継手部材とを溶着する電気溶
着装置に関し、より詳細には、電力供給部の改良に係る
。Detailed Description of the Invention (Field of Industrial Application) The present invention provides a method for bonding a pipe member made of a thermoplastic resin to a joint member also made of a thermoplastic resin. The present invention relates to an electric welding device that welds the pipe member and the joint member by supplying current from a power supply unit to the heating element, and more specifically, relates to an improvement in the power supply unit. .

（従来の技術） 一般に、熱可塑性樹脂で形成されたガス管等の配役工事
においては、その現場においてガス管同士の接続を行っ
ているが、その接続方法として、ガス管の接続先端部分
を熱可塑性樹脂で形成された継手部材の両側より所定量
だけ挿入し、この状態において継手部材の内周面に設け
られた加熱ヒータに電気溶着装置より電流を供給するこ
とにより、該加熱ヒータが巻かれた部分の樹脂を溶融し
、これによりガス管の端部と継手部材とを溶着するとい
った方法が行われている。そして、このようにして１箇
所の溶着作業を終了すると、作業者は、電気溶着装置を
持ってその隣の接続箇所まで移動し、上記と同様の作業
を繰り返してその箇所の溶着を終了すると、またその隣
の接続箇所へ移動するといった作業を繰り返すことにな
る。(Prior art) Generally, in construction work for gas pipes made of thermoplastic resin, the gas pipes are connected to each other on-site. A joint member made of plastic resin is inserted a predetermined amount from both sides, and in this state, an electric current is supplied from an electric welding device to a heater provided on the inner peripheral surface of the joint member, so that the heater is wound. A method has been used in which the resin in the part of the gas pipe is melted and the end of the gas pipe and the joint member are welded together. After completing the welding work at one location in this way, the worker moves to the next connection location with the electric welding device, repeats the same work as above, and finishes welding at that location. In addition, the task of moving to the adjacent connection point is repeated.

（発明が解決しようとする課題） ところで、このようなガス管の接続作業に使用する電気
溶着装置の仕様は、一般に出力４０Ｖ、５０　／’、Ａ
Ｘ（２Ｋ　Ｖ　Ａ）という大電力用に設計されていると
ともに、電気溶着装置の構成要素である電力供給部の出
力制御は、サイリスタの位相制御により出力電圧を一定
に制御していることから、入出力間の絶縁及び電力変換
の目的でトランスが内蔵されている。(Problem to be Solved by the Invention) By the way, the specifications of the electric welding device used for such gas pipe connection work are generally an output of 40V, 50/', and A.
It is designed for a high power of A transformer is built in for the purpose of insulation between input and output and power conversion.

しかしながら、このトランスは、上記したように大電力
用であるために、その重量が１５ｋｇ程度と大変型たい
ので、このトランスを含む装置自体が大変型たいものと
なっている。このため、作業者は、１箇所のガス管の接
続が終わるたびに、この電気溶着装置を持って隣の接続
箇所に移動するといった作業を繰り返すことになり、そ
の移動だけでも大変であることから、作業性の極めて悪
いものであった。However, since this transformer is for high power use as described above, it weighs about 15 kg and is quite large, making the device itself including this transformer very large. For this reason, each time a worker finishes connecting a gas pipe at one location, the worker must carry the electric welding device and move it to the next connection location, which is difficult to do. , the workability was extremely poor.

本発明は係る実情に鑑みてなされたもので、その目的は
、電力供給部の構成要素であるトランスの軽量化を図る
ことにより、小型、軽量で持ち運びに便利な電気溶着装
置を提供することにある。The present invention has been made in view of the above circumstances, and its purpose is to provide an electric welding device that is small, lightweight, and convenient to carry by reducing the weight of the transformer that is a component of the power supply section. be.

（課題を解決するための手段） 上記課題を解決するため、本発明は、熱可塑性樹脂から
なるバイブ部材と同じく熱可塑性樹脂からなる継手部材
とを接合するに当り、パイプ部材と接触する継手部材の
表面に加熱要素が設けられ、該加熱要素に電力供給部か
ら電流を供給することにより、前記パイプ部材と前記継
手部材とを溶着する電気溶着装置において、前記電力供
給部は、交流入力電源を直流電源に変換するとともに、
この変換された直流電源を高周波の交流電源に変換する
第１の変換手段と、該第１の変換手段によって変換され
た高周波電源を降圧する降圧トランスと、該降圧トラン
スの交流出力を直流に変換する第２の変換手段とで構成
されたものである。(Means for Solving the Problems) In order to solve the above problems, the present invention provides a joint member that comes into contact with a pipe member when joining a vibe member made of a thermoplastic resin and a joint member also made of a thermoplastic resin. In an electric welding apparatus that welds the pipe member and the joint member by supplying current from a power supply unit to the heating element, the power supply unit receives an AC input power source. Along with converting to DC power,
a first conversion means for converting the converted DC power into high-frequency AC power; a step-down transformer for stepping down the high-frequency power converted by the first conversion means; and a step-down transformer for converting the AC output of the step-down transformer into DC. and a second conversion means.

（作用） 商用電源であるＡＣｌｏｏＶの交流電源をダイオードブ
リフジ等の整流回路で整流し、平滑コンデンサによって
平滑して、直流電源に変換するとともに、この変換され
た直流電源をスイッチング用パワートランジスタ等によ
って高周波の交流電源に変換する。そして、高周波に変
換した交流電源を降圧トランスによって降圧し、その交
流出力をダイオードブリッジと平滑コンデンサとによっ
て整流、平滑することにより、直流電圧に変換し、その
出力としてＤＣ４０Ｖを得ている。(Function) AClooV AC power, which is a commercial power source, is rectified by a rectifier circuit such as a diode bridge, smoothed by a smoothing capacitor, and converted to DC power, and this converted DC power is used by a switching power transistor, etc. Converts to high frequency AC power. Then, the voltage of the AC power converted to high frequency is stepped down by a step-down transformer, and the AC output is rectified and smoothed by a diode bridge and a smoothing capacitor, thereby converting it into a DC voltage to obtain DC40V as the output.

降圧トランスは、高い周波数で動作させることにより、
その磁束が少なくてすむことから、コアの断面積を小さ
くすることができる。このため、従来のように商用電源
周波数のままで降圧する場合に比べて、その重量及び形
状を数分の−から士数分の−にすることが可能となる。By operating a step-down transformer at a high frequency,
Since less magnetic flux is required, the cross-sectional area of the core can be reduced. Therefore, compared to the conventional case where the voltage is stepped down while maintaining the commercial power supply frequency, it is possible to reduce the weight and shape from a few minutes to an order of magnitude.

（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。(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

第１図は、本発明の電気溶着装置を用いてバイブ部材と
継手部材との接続を行う様子を示している。FIG. 1 shows how a vibrator member and a joint member are connected using the electric welding device of the present invention.

同図において、１は本発明の電気溶着装置の構成要素で
ある電力供給部であり、この電力供給部１からは、一対
の電力供給ラインｌａ、ｌｂが導出されている。また、
２はコイル状の加熱ヒシタ３を備えた継手部材である。In the figure, reference numeral 1 denotes a power supply section which is a component of the electric welding apparatus of the present invention, and a pair of power supply lines la and lb are led out from this power supply section 1. Also,
2 is a joint member provided with a coil-shaped heating heater 3.

この電気溶着装置は、ポリエチレン等の熱可塑性樹脂か
らなる２つのバイブ部材５，５の各端部を、同じ熱可塑
性樹脂からなる前記継手部材２の両端開口部から略中央
までそれぞれ挿入し、この継手部材２の管受口の内周面
側に設けられた前記加熱ヒータ３の発熱作用により、前
記パイプ部材５．５と前記継手部材２とを溶着して接合
するものである。なお、電力供給ラインｌａ、ｌｂの先
端部には接続端子６ａ、６ｂが設けられ、該接続端子５
ａ、５ｂは、継手部材２の外周面に突出状に形成された
前記加熱ヒータ３の電圧印加端子３ａ、３ｂにそれぞれ
着脱可能に接続されている。In this electric welding device, each end of two vibe members 5, 5 made of thermoplastic resin such as polyethylene is inserted into the joint member 2 made of the same thermoplastic resin from both end openings to approximately the center. The pipe member 5.5 and the joint member 2 are welded and joined by the heat generating action of the heater 3 provided on the inner peripheral surface of the pipe socket of the joint member 2. Note that connection terminals 6a and 6b are provided at the tips of the power supply lines la and lb, and the connection terminals 5
a and 5b are removably connected to voltage application terminals 3a and 3b of the heater 3 formed in a protruding manner on the outer peripheral surface of the joint member 2, respectively.

このように設けられた前記加熱ヒータ３に、電力供給ラ
インｌａ、ｌｂを介して電力を供給する電力供給部１０
回路構成の一例を第２図に示す。A power supply unit 10 that supplies power to the heater 3 provided in this way via power supply lines la and lb.
An example of the circuit configuration is shown in FIG.

同図において、１１は商用電源であるＡＣ１００■の入
力端子、１２はサイリスクによって構成されたサイリス
クダイオードブリフジ回路、１３は平滑コンデンサ、１
４はパワーＭＯ３−ＦＥＴによって構成されたトランジ
スタスイッチング回路、１５は入力と出力との間を絶縁
するとともに交流入力を降圧する降圧トランス、１６は
ダイオードブリッジ回路、１７は平滑コンデンサ、１８
はＤＣ４０Ｖを前記加熱ヒータ３に送出するための出力
端子である。In the figure, 11 is an input terminal of AC100 which is a commercial power supply, 12 is a Cyrisk diode bridging circuit configured by Cyrisk, 13 is a smoothing capacitor, 1
4 is a transistor switching circuit constituted by a power MO3-FET, 15 is a step-down transformer that insulates between the input and output and steps down the AC input, 16 is a diode bridge circuit, 17 is a smoothing capacitor, 18
is an output terminal for sending DC40V to the heater 3.

商用電源の入力端子１１．１１のそれぞれは、その交流
入力を整流するためのサイリスクダイオードブリッジ回
路１２のそれぞれの入力に導かれており、サイリスクダ
イオードブリッジ回路１２の出力は、高周波でスイッチ
ングを行うトランジスタスイッチング回路１４のそれぞ
れの人力に導かれている。また、サイリスクダイオード
ブリッジ回路１２の出力には、平滑コンデンサ１３が並
列に接続されている。Each of the input terminals 11 . Each of the transistor switching circuits 14 is guided by the human power. Furthermore, a smoothing capacitor 13 is connected in parallel to the output of the silice diode bridge circuit 12.

トランジスタスイッチング回路１４のそれぞれの出力は
、降圧トランス１５の一次巻’ＩＡ　１５　ａの両端に
それぞれ接続されており、降圧トランス１５の二次巻線
１５ｂの両端は、高周波交流出力を整流するためのダイ
オードブリフジ回路１６のそれぞれの入力に導かれてい
る。そして、直流に変換された電圧を示すダイオードブ
リッジ回路１６のそれぞれの出力は、加熱ヒータ３のそ
れぞれの電圧印加端子３ａ、３ｂに接続するための各出
力端子１８．１８に導かれている。また、ダイオードブ
リフジ回路１６の出力には、平滑コンデンサ１７が並列
に接続されている。Each output of the transistor switching circuit 14 is connected to both ends of the primary winding 15a of the step-down transformer 15, and both ends of the secondary winding 15b of the step-down transformer 15 are connected to the ends of the secondary winding 15b for rectifying the high-frequency AC output. are led to respective inputs of the diode bridging circuit 16. The respective outputs of the diode bridge circuit 16 indicating the voltage converted to direct current are led to the respective output terminals 18, 18 for connection to the respective voltage application terminals 3a, 3b of the heating heater 3. Further, a smoothing capacitor 17 is connected in parallel to the output of the diode bridging circuit 16.

次に、上記構成の電気溶着装置の動作を説明する。Next, the operation of the electrical welding apparatus having the above configuration will be explained.

商用電源であるＡＣｌｏｏＶの交流電源は、サイリスク
ダイオードブリッジ回路１２において整流されることに
より単方向電源に形成されるとともに、平滑コンデンサ
１３によって平滑されることにより、直流電源に変換さ
れた後、トランジスタスイッチング回路１４に入力され
る。トランジスタスイッチング回路１４に入力される直
流電源のレベル制御は、前記サイリスクダイオードブリ
ッジ回路１２の各サイリスクの点弧を制御することによ
り行う。The AC power of AClooV, which is a commercial power source, is rectified in the silice diode bridge circuit 12 to form a unidirectional power source, and is smoothed by the smoothing capacitor 13 to be converted to a DC power source. The signal is input to the switching circuit 14. The level of the DC power input to the transistor switching circuit 14 is controlled by controlling the ignition of each thyristor of the thyristor diode bridge circuit 12.

トランジスタスイッチング回路１４に入力された直流電
源は、ここで高周波のスイッチングを行うことにより高
周波交流に変換された後、降圧トランス１５の一次巻線
１５ａに供給され、ここで適宜降圧されて二次巻線１５
ｂから取り出される。The DC power input to the transistor switching circuit 14 is converted into high-frequency AC by high-frequency switching, and then supplied to the primary winding 15a of the step-down transformer 15, where the voltage is appropriately stepped down and the secondary winding is performed. line 15
taken out from b.

そして、二次巻線１５ｂから取り出された高周波交流出
力は、次のダイオードブリッジ回路１６において整流さ
れるとともに、平滑コンデンサ１７によって平滑される
ことにより、ＤＣ４ＱＶの直流電源に変換された後、出
力端子１８から電力供給ラインｌａ、ｌｂを介して加熱
ヒータ３の電圧印加端子３ａ、３ｂに供給される。Then, the high frequency AC output taken out from the secondary winding 15b is rectified in the next diode bridge circuit 16 and smoothed by the smoothing capacitor 17, thereby converting it into DC4QV DC power, and then the output terminal The voltage is supplied from 18 to the voltage application terminals 3a, 3b of the heater 3 via power supply lines la, lb.

すなわち、本発明では、商用電源を一旦高周波電源に変
換し、高周波のままで降圧トランス１５を通すようにし
たことにより、その磁束が少なくてすむことから、降圧
トランス１５のコア断面積を小さくすることが可能とな
る。That is, in the present invention, by converting the commercial power source into a high-frequency power source and passing the high-frequency power through the step-down transformer 15, the magnetic flux can be reduced, thereby reducing the core cross-sectional area of the step-down transformer 15. becomes possible.

（発明の効果） 以上説明したように、本発明の電気溶着装置によれば、
商用電源を一旦高周波電源に変換し、高周波のままで降
圧トランスを通すようにしたので、従来のように商用電
源周波数のままで降圧する場合に比べて、その重量及び
形状を数分の−から十数分の−にすることができ、これ
により、装置全体の小型化、軽量化を図ることができる
。(Effects of the Invention) As explained above, according to the electric welding apparatus of the present invention,
By converting the commercial power source into a high-frequency power source and passing it through a step-down transformer while keeping the high frequency, the weight and shape of the power source can be reduced from a few minutes to a few minutes, compared to the conventional method of stepping down the voltage at the commercial power frequency. The size can be reduced by a tenth of a second, thereby making it possible to reduce the size and weight of the entire device.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の電気溶着装置を用いてパイプ部材と継
手部材との接続を行う様子を示した図、第２図は本発明
の電気溶着装置の構成要素である電力供給部の一例を示
す回路図である。 １・・・電気溶着袋Ｒ２・・・継手部材３・・・加熱ヒ
ータ　　　５・・・パイプ部材２・・・サイリスクダイ
オードブリッジ回路３・・・平滑コンデンサ ４・・・トランジスタスイッチング回路５・・・降圧ト
ランス ６・・・ダイオードブリッジ回路 ７・・・平滑コンデンサ 特許出願人　積水化学工業株式会社 代表者　廣１）　馨 第１°図FIG. 1 is a diagram showing how a pipe member and a joint member are connected using the electric welding device of the present invention, and FIG. 2 is an example of a power supply unit that is a component of the electric welding device of the present invention. FIG. 1...Electric welding bag R2...Joint member 3...Heating heater 5...Pipe member 2...Sirisk diode bridge circuit 3...Smoothing capacitor 4...Transistor switching circuit 5...・Step-down transformer 6...Diode bridge circuit 7...Smoothing capacitor Patent applicant Sekisui Chemical Co., Ltd. Representative Hiroshi 1) Kaoru 1° Diagram

Claims (1)

【特許請求の範囲】 １）熱可塑性樹脂からなるパイプ部材と同じく熱可塑性
樹脂からなる継手部材とを接合するに当り、パイプ部材
と接触する継手部材の表面に加熱要素が設けられ、該加
熱要素に電力供給部から電流を供給することにより、前
記パイプ部材と前記継手部材とを溶着する電気溶着装置
において、 前記電力供給部は、 交流入力電源を直流電源に変換するととも に、この変換された直流電源を高周波の交流電源に変換
する第１の変換手段と、 該第１の変換手段によって変換された高周 波電源を降圧する降圧トランスと、 該降圧トランスの交流出力を直流に変換す る第２の変換手段とで構成されたことを特徴とする電気
溶着装置。[Claims] 1) When joining a pipe member made of a thermoplastic resin and a joint member also made of a thermoplastic resin, a heating element is provided on the surface of the joint member that comes into contact with the pipe member, and the heating element In an electric welding device that welds the pipe member and the joint member by supplying current from a power supply unit to A first converter that converts a power source into a high-frequency AC power source; a step-down transformer that steps down the high-frequency power source converted by the first converter; and a second converter that converts the AC output of the step-down transformer into DC. An electric welding device comprising: means.
JP1016624A 1989-01-26 1989-01-26 Electric welding device Pending JPH02196629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1016624A JPH02196629A (en) 1989-01-26 1989-01-26 Electric welding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1016624A JPH02196629A (en) 1989-01-26 1989-01-26 Electric welding device

Publications (1)

Publication Number Publication Date
JPH02196629A true JPH02196629A (en) 1990-08-03

Family

ID=11921501

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1016624A Pending JPH02196629A (en) 1989-01-26 1989-01-26 Electric welding device

Country Status (1)

Country Link
JP (1) JPH02196629A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998053242A1 (en) * 1997-05-16 1998-11-26 Uponor Aldyl Company Fusion joining apparatus
US5908575A (en) * 1997-05-16 1999-06-01 Gas Research Institute Method of inductively fusion joining plastic pipes
CN103878973A (en) * 2014-03-19 2014-06-25 国家电网公司 Heat preservation method for welding machine heat preservation box

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5649678A (en) * 1979-09-28 1981-05-06 Toshiba Electric Equip Corp Power source device
JPS6014685A (en) * 1983-07-04 1985-01-25 新日本製鐵株式会社 Composite double steel pipe
JPS6233506B2 (en) * 1981-12-24 1987-07-21 Asahi Chemical Ind
JPS6324820A (en) * 1986-07-18 1988-02-02 井関農機株式会社 Second treatment apparatus in threshing machine
JPS63160822A (en) * 1986-12-24 1988-07-04 Sekisui Chem Co Ltd Electric fusing-equipment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5649678A (en) * 1979-09-28 1981-05-06 Toshiba Electric Equip Corp Power source device
JPS6233506B2 (en) * 1981-12-24 1987-07-21 Asahi Chemical Ind
JPS6014685A (en) * 1983-07-04 1985-01-25 新日本製鐵株式会社 Composite double steel pipe
JPS6324820A (en) * 1986-07-18 1988-02-02 井関農機株式会社 Second treatment apparatus in threshing machine
JPS63160822A (en) * 1986-12-24 1988-07-04 Sekisui Chem Co Ltd Electric fusing-equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998053242A1 (en) * 1997-05-16 1998-11-26 Uponor Aldyl Company Fusion joining apparatus
US5908575A (en) * 1997-05-16 1999-06-01 Gas Research Institute Method of inductively fusion joining plastic pipes
US6313449B1 (en) 1997-05-16 2001-11-06 Uponor Aldyl Company Fusion joining apparatus
CN103878973A (en) * 2014-03-19 2014-06-25 国家电网公司 Heat preservation method for welding machine heat preservation box

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