JP6654878B2 - How to recycle electric fusion joints - Google Patents
How to recycle electric fusion joints Download PDFInfo
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- JP6654878B2 JP6654878B2 JP2015234815A JP2015234815A JP6654878B2 JP 6654878 B2 JP6654878 B2 JP 6654878B2 JP 2015234815 A JP2015234815 A JP 2015234815A JP 2015234815 A JP2015234815 A JP 2015234815A JP 6654878 B2 JP6654878 B2 JP 6654878B2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Description
本発明は、熱可塑性樹脂製のポリエチレン管等の接合に用いられる電気融着継手（以下、「ＥＦ継手」ともいう）のリサイクル方法に関する。 The present invention relates to a method of recycling an electro-fusion joint (hereinafter, also referred to as an “EF joint”) used for joining a thermoplastic resin polyethylene pipe or the like.
近年、各種分野において、資源循環への取り組みがなされている。
配管部品の分野でも、熱可塑性樹脂製のポリエチレン管等に関しては、品質的に不具合を生じた製品及び余剰在庫となった製品を収集して、粉砕および溶融後、ペレット化して再利用するリサイクルルートが確立している。
In recent years, various fields have been working on resource recycling.
In the field of plumbing parts, for polyethylene pipes made of thermoplastic resin, etc., a recycling route that collects defective products and products in excess inventory, pulverizes and melts them, then pelletizes them and reuses them. Has been established.
一方、ＥＦ継手は、熱可塑性樹脂製の継手本体に、電気融着手段である加熱ワイヤと、この加熱ワイヤの両端部に圧着された端子金具が組み込まれているため、これをそのまま上記のリサイクルルートでペレット化することはできない。 On the other hand, in the EF joint, a heating wire serving as an electric fusion means and terminal fittings crimped to both ends of the heating wire are incorporated in a joint body made of a thermoplastic resin. It cannot be pelletized by root.
このため、従来、ＥＦ継手は、そのまま廃棄処分するか、もしくは、加熱ワイヤと端子金具を継手本体の一部と共に切除して、継手本体の残部をペレット化して再利用するといった方法がとられてきた。 For this reason, conventionally, the EF joint has been disposed of as it is, or the heating wire and the terminal fitting are cut off together with a part of the joint main body, and the remaining part of the joint main body is pelletized and reused. Was.
その他に、ＥＦ継手のリサイクル技術として、ＥＦ継手を粉砕後、水比重差選別を行って、加熱ワイヤが入っている粉砕片と、加熱ワイヤが入っていない粉砕片に選別し、加熱ワイヤが入っている粉砕片は廃棄処分を行い、加熱ワイヤが入っていない粉砕片はペレット化して再利用する方法が開示されている（特許文献１）。 In addition, as a recycling technology for EF joints, after crushing the EF joints, water-specific gravity difference sorting is performed to separate the crushed pieces containing the heating wire and the crushed pieces not containing the heating wire. A method has been disclosed in which crushed pieces that have been disposed of are discarded, and crushed pieces that do not contain a heating wire are pelletized and reused (Patent Document 1).
しかし、ＥＦ継手に関する上記の方法は、何れも、加熱ワイヤと端子金具は、合成樹脂製の継手本体に組み込まれた状態で廃棄されており、資源循環の観点から好ましくないという問題があった。 However, any of the above-described methods relating to the EF joint has a problem that the heating wire and the terminal fitting are disposed in a state of being assembled in the joint body made of a synthetic resin, which is not preferable from the viewpoint of resource circulation.
本発明の目的は、上記の問題を解決し、ＥＦ継手の資源循環効率を改善する方法、具体的には、ＥＦ継手のリサイクル過程で排出される廃棄物を削減し、ＥＦ継手を構成する部材（継手本体と加熱ワイヤと端子金具）を効率よくリサイクルすることができる方法を提供することである。 An object of the present invention is to solve the above-mentioned problems and improve the resource circulation efficiency of EF joints. More specifically, the present invention aims to reduce the waste discharged in the process of recycling EF joints, and to form members that constitute EF joints. An object of the present invention is to provide a method capable of efficiently recycling (the joint body, the heating wire, and the terminal fitting).
本発明では、上記の課題を解決するための手段として、ＥＦ継手のリサイクル方法において、端子金具を引き抜く、「端子金具引き抜き工程」と、加熱ワイヤの先端を露出させる「加熱ワイヤ露出工程」と、露出させた加熱ワイヤを保持具で保持しながら、加熱ワイヤを取り出す「加熱ワイヤ取り出し工程」とを含む構成を採用した。 In the present invention, as means for solving the above-mentioned problems, in a method of recycling an EF joint, a terminal fitting is pulled out, a “terminal fitting pulling-out step”, and a “heating wire exposing step” for exposing a tip of a heating wire, A configuration including a “heating wire take-out step” for taking out the heating wire while holding the exposed heating wire with the holder was adopted.
前記端子金具引き抜き工程では、前記端子金具の頭部に、引き抜き工具を嵌合させて作用点とし、かつ継手本体の外周面を支点として、てこの原理により、前記端子金具を継手本体から引き抜くことが好ましい。前記端子金具は、めねじ部を備え、前記端子金具引き抜き工程では、前記端子金具のめねじ部に引き抜き工具の先端のおねじを螺合させて前記作用点とすることが好ましい。 In the terminal fitting pulling-out step, the terminal fitting is pulled out from the joint main body by the leverage principle, with a drawing tool fitted to the head of the terminal fitting as an action point, and using the outer peripheral surface of the joint main body as a fulcrum. Is preferred. It is preferable that the terminal fitting has a female screw part, and in the terminal fitting pulling-out step, an external thread of a tip of a drawing tool is screwed into the female screw part of the terminal fitting to set the action point.
前記加熱ワイヤ露出工程では、継手本体の内周面のうち、前記端子金具が存在した箇所に対向する箇所を中心に、半田ごてを押し当てて継手本体を溶出させることが好ましい。 In the heating wire exposing step, it is preferable that the joint body is eluted by pressing a soldering iron around a portion of the inner peripheral surface of the joint body opposite to a portion where the terminal fitting is present.
前記加熱ワイヤ取り出し工程では、前記保持具もしくは継手本体を回転させて、加熱ワイヤを巻き取って取り出すことが好ましい。前記保持具は、前記加熱ワイヤを保持する保持部を備えた電動式巻き取り工具とし、前記加熱ワイヤ取り出し工程では、この保持部を電動で回転させて加熱ワイヤを巻き取って取り出すことが好ましい。 In the heating wire take-out step, it is preferable that the holding tool or the joint body is rotated to take up and take out the heating wire. It is preferable that the holding tool is an electric winding tool having a holding portion for holding the heating wire, and in the heating wire take-out step, it is preferable that the holding portion be electrically rotated to take up and take out the heating wire.
本発明によれば、ＥＦ継手のリサイクル方法において、「端子金具引き抜き工程」では、端子金具を引き抜いて継手本体から分離し、「加熱ワイヤ露出工程」では、加熱ワイヤの少なくとも一部を露出させ、「加熱ワイヤ取り出し工程」では、露出させた加熱ワイヤを保持具で保持しながら、加熱ワイヤを継手本体から取り出して分離することができる。
すなわち、本発明によれば、ＥＦ継手のリサイクル過程において熱可塑性樹脂製の継手本体と、加熱ワイヤと、端子金具とを分離して回収することができるため、従来技術に比べて、ＥＦ継手の資源循環効率を改善することができる。
具体的には、継手本体は全てをペレット化して再利用することができ、加熱ワイヤと端子金具も、全て金属資源として再利用することができるため、ＥＦ継手のリサイクル過程で排出される廃棄物を削減し、ＥＦ継手を構成する部材（継手本体と加熱ワイヤと端子金具）を効率よくリサイクルし、ＥＦ継手の資源循環効率を改善することができる。
According to the present invention, in the EF joint recycling method, in the “terminal fitting withdrawing step”, the terminal fitting is pulled out and separated from the joint main body, and in the “heating wire exposing step”, at least a part of the heating wire is exposed, In the "heating wire take-out step", the heating wire can be taken out from the joint body and separated while holding the exposed heating wire with the holder.
That is, according to the present invention, in the recycling process of the EF joint, the thermoplastic resin joint body, the heating wire, and the terminal fitting can be separated and collected. Resource recycling efficiency can be improved.
Specifically, the entire joint body can be pelletized and reused, and the heating wires and terminal fittings can all be reused as metal resources. And the members (the joint body, the heating wire and the terminal fittings) constituting the EF joint can be efficiently recycled, and the resource circulation efficiency of the EF joint can be improved.
本発明は、ＥＦ継手のリサイクル方法に関し、端子金具を引き抜く「端子金具引き抜き工程」と、加熱ワイヤの先端を露出させる「加熱ワイヤ露出工程」と、露出させた加熱ワイヤの先端を保持具で保持しながら、この保持具で加熱ワイヤを取り出す「加熱ワイヤ取り出し工程」を含むものである。 The present invention relates to a method of recycling an EF joint, in which a terminal fitting is pulled out, a terminal fitting is removed, a heating wire exposing step is exposed, and a tip of the exposed heating wire is held by a holder. Meanwhile, a "heating wire take-out step" for taking out the heating wire with the holder is included.
図１には、本実施形態における「ＥＦ継手のリサイクル方法」のフロー図を示している。以下、図１に示す各工程について説明する。 FIG. 1 shows a flowchart of a “method of recycling an EF joint” in the present embodiment. Hereinafter, each step shown in FIG. 1 will be described.
（端子金具引き抜き工程）
端子金具引き抜き工程では、ＥＦ継手から端子金具の引き抜きを行う。
(Terminal metal removal process)
In the terminal fitting extracting step, the terminal fitting is extracted from the EF joint.
ＥＦ継手は、図２に示すように、継手本体１に、加熱ワイヤ２と、端子金具３を組み込んで構成されている。 As shown in FIG. 2, the EF joint is configured by incorporating a heating wire 2 and a terminal fitting 3 into a joint main body 1.
継手本体１は、ポリエチレン、ポリプロピレン、ポリブテン等のポリオレフィンやポリ塩化ビニルなどの熱可塑性樹脂を用いて形成されている。継手本体１の内周面４側には、ニクロム線等の加熱ワイヤ２が螺旋状に埋設され、継手本体１の外周面５には、図２に示すａ軸と直交する径方向で、外側に突出する一対の端子金具３が埋設されている。端子金具３は、加熱ワイヤ２の両端部に圧着接続されている。加熱ワイヤ２は継手本体１の内周面４の至近位置、例えば１ｍｍ以内の位置に埋設されている。 The joint body 1 is formed using a thermoplastic resin such as polyolefin such as polyethylene, polypropylene and polybutene and polyvinyl chloride. A heating wire 2 such as a nichrome wire is helically embedded on the inner peripheral surface 4 side of the joint main body 1, and the outer peripheral surface 5 of the joint main body 1 is formed on the outer peripheral surface 5 in a radial direction orthogonal to the a-axis shown in FIG. A pair of terminal fittings 3 protruding from the terminal are embedded. The terminal fittings 3 are connected by crimping to both ends of the heating wire 2. The heating wire 2 is buried at a position close to the inner peripheral surface 4 of the joint body 1, for example, at a position within 1 mm.
端子金具３は、図３に示すように、めねじ部６を備えた頭部７と、先端ピン部８からなり、図２に示すように先端ピン部８が継手本体１に埋設されている。頭部７は、図２に示すように、継手本体１の外周面５を突出させて形成した囲繞部９によって囲まれている。 As shown in FIG. 3, the terminal fitting 3 includes a head 7 having a female thread 6 and a tip pin 8. The tip pin 8 is embedded in the joint body 1 as shown in FIG. 2. . As shown in FIG. 2, the head 7 is surrounded by a surrounding portion 9 formed by projecting the outer peripheral surface 5 of the joint main body 1.
端子金具引き抜き工程では、図４に示す引き抜き工具１０を使用して、「てこの原理」により端子金具３の引き抜きを行う。 In the terminal fitting extracting step, the terminal fitting 3 is extracted using the extraction tool 10 shown in FIG. 4 according to the “leverage principle”.
引き抜き工具１０は、図４（ｂ）に示すように、へら状の金属材１３の先端を傾斜させ、傾斜させた先端部分に、端子金具３のめねじ部６と螺合するおねじ部１１を有している。また、金属材１３が傾斜する直前の位置には、上記の「てこの原理」で支点として機能する支柱部１２を有している。おねじ部１１は、金属材１３の先端に形成された長孔２２に蝶ボルト２０を取り付けて形成され、支柱部１２は、支柱部材１４を金属材１３に六角ボルト１５で固定して形成されている。図４に示すように支柱部１２は引き抜き工具１０の幅方向に２本設けられ、２点の支点を形成している。なお蝶ボルト２０は長孔２２よりも大径の頭部を備えており、長孔２２の内部で回転及び移動可能であるとともに、金属材１３に対して首振り可能となっている。これによって端子金具３を真っ直ぐに引き抜くことが可能となる。 As shown in FIG. 4 (b), the extraction tool 10 has a spatula-shaped metal material 13 inclining the tip, and the inclined tip portion has a male thread 11 screwed into the female thread 6 of the terminal fitting 3. have. In addition, at a position immediately before the metal material 13 is tilted, the column 12 that functions as a fulcrum according to the above “leverage principle” is provided. The male screw portion 11 is formed by attaching a wing bolt 20 to a long hole 22 formed at the tip of the metal material 13, and the support portion 12 is formed by fixing a support member 14 to the metal material 13 with a hexagon bolt 15. ing. As shown in FIG. 4, two support portions 12 are provided in the width direction of the extraction tool 10 and form two support points. Note that the wing bolt 20 has a head portion having a larger diameter than the elongated hole 22, is rotatable and movable inside the elongated hole 22, and is swingable with respect to the metal material 13. This makes it possible to pull out the terminal fitting 3 straight.
端子金具引き抜き工程では、まず、図５に示すように、蝶ボルト２０を回転させて引き抜き工具１０の先端のおねじ部１１を、端子金具３のめねじ部６に螺合させる。 In the terminal fitting extracting step, first, as shown in FIG. 5, the wing bolt 20 is rotated to screw the external thread 11 of the tip of the extraction tool 10 into the female thread 6 of the terminal fitting 3.
続いて、図６に示すように、支柱部１２の下端を、継手本体１の外周面５に当接させた上で、引き抜き工具１０の把持部２１に下向きの力を加える。このとき、継手本体１の外周面５に当接した支柱部１２の下端が「支点」、下向きの力を受ける把持部２１が「力点」、おねじ部１１とめねじ部６が螺合した点が「作用点」となる。「力点」に加えたれた下向きの小さな力が、「支点」を媒介して、「作用点」で上向きの大きな力となるため、小さな力で簡単に端子金具３の引き抜きを行うことができる。このとき加熱ワイヤ２は継手本体１の内部に残ったまま、端子金具３のみが加熱ワイヤ２から引きちぎられるように分離し、引き抜かれる。 Subsequently, as shown in FIG. 6, a downward force is applied to the grip portion 21 of the extraction tool 10 after the lower end of the column portion 12 is brought into contact with the outer peripheral surface 5 of the joint body 1. At this time, the lower end of the support portion 12 abutting on the outer peripheral surface 5 of the joint body 1 is a "fulcrum", the grip portion 21 receiving the downward force is a "force point", and the point at which the male screw portion 11 and the female screw portion 6 are screwed. Becomes the “action point”. The small downward force applied to the "point of force" becomes a large upward force at the "point of action" via the "fulcrum", so that the terminal fitting 3 can be easily pulled out with a small force. At this time, with the heating wire 2 remaining inside the joint main body 1, only the terminal fitting 3 is separated and pulled out from the heating wire 2 so as to be torn off.
（加熱ワイヤ露出工程）
加熱ワイヤ露出工程では、前記工程で端子金具３を引き抜いた後の継手本体１から、加熱ワイヤ２の先端を露出させる。
(Heating wire exposure process)
In the heating wire exposing step, the distal end of the heating wire 2 is exposed from the joint body 1 after the terminal fitting 3 has been pulled out in the above step.
加熱ワイヤ２は、前記のように、継手本体１の内周面４側に螺旋状に埋設されているため、加熱ワイヤ露出工程では、図７に示すように、継手本体１の内周面４のうち、端子金具３の引き抜き前に端子金具３が存在した箇所に対向する箇所を中心に、半田ごて１９を押し当てて継手本体１を溶出させて、加熱ワイヤ２の先端を露出させる。 As described above, since the heating wire 2 is helically embedded on the inner peripheral surface 4 side of the joint main body 1, in the heating wire exposing step, as shown in FIG. Of these, the soldering iron 19 is pressed against a location facing the location where the terminal fitting 3 was present before the terminal fitting 3 was pulled out to elute the joint body 1 and expose the tip of the heating wire 2.
端子金具３は、加熱ワイヤ２の両端部に圧着接続されているため、端子金具３を引き抜いた後の加熱ワイヤ２は、２つの「先端」を有するが、加熱ワイヤ露出工程では、いずれか一方の「先端」を露出させればよい。 Since the terminal fitting 3 is crimped to both ends of the heating wire 2, the heating wire 2 after the terminal fitting 3 has been pulled out has two “tips”. What is necessary is to expose the "tip" of.
加熱ワイヤ露出工程では、半田ごてを用いた上記手法の他に、たがねを用いて加熱ワイヤの先端を叩き出す方法や、バーナーを用いて加熱ワイヤの先端を炙り出す方法や、継手本体を半割にして加熱ワイヤの先端を引き出す方法も考えられるが、作業負荷や安全性の観点から、半田ごてを用いた上記手法が最も好ましい。 In the heating wire exposure step, in addition to the above method using a soldering iron, a method of tapping the tip of the heating wire using a tip, a method of roasting the tip of the heating wire using a burner, The method of using a soldering iron is most preferable from the viewpoint of work load and safety.
（加熱ワイヤ取り出し工程）
加熱ワイヤ取り出し工程では、加熱ワイヤ露出工程で露出させた加熱ワイヤの先端を保持具で保持しながら、図８に示す保持具１６を使用して、加熱ワイヤ２を巻き取りながら、継手本体１から、加熱ワイヤの取り出しを行う。
(Heating wire removal process)
In the heating wire taking-out step, while holding the tip of the heating wire exposed in the heating wire exposing step with the holding tool, the heating wire 2 is wound up using the holding tool 16 shown in FIG. Then, the heating wire is taken out.
保持具１６は、加熱ワイヤ２を保持する保持部１７を備えた電動式巻き取り工具である。 The holder 16 is an electric winding tool provided with a holder 17 for holding the heating wire 2.
図９に示すように、保持部１７は金属製の円筒体であり、その先端には加熱ワイヤ２を差し込むことができる幅の溝部１８が形成され、図８に示すように、基端には電動工具のチャック２３に係合保持されるシャンク２４を備えている。 As shown in FIG. 9, the holding portion 17 is a metal cylindrical body, and a groove portion 18 having a width into which the heating wire 2 can be inserted is formed at the distal end, and as shown in FIG. A shank 24 is provided which is engaged with and held by the chuck 23 of the power tool.
加熱ワイヤ取り出し工程では、図１０に示すように、保持部１７の先端が、円筒状の継手本体１の内部空間に位置するように配置して、加熱ワイヤ露出工程で露出させた加熱ワイヤ２の先端を溝部１８に引っ掛けて保持した後、保持部１７を電動回転させて、継手本体１の内部空間で、その中心軸方向に加熱ワイヤ２の巻き取りを行う。前記したように加熱ワイヤ２は継手本体１の内周面４の至近位置に埋設されているため、容易に内側に引き出され、保持部１７の外周に巻きつくようにして取り出される。なお各図面には示されていないが、この加熱ワイヤ取り出し工程を含む各工程では、継手本体１をバイスにより固定しながら作業を行なうことが好ましい。 In the heating wire take-out step, as shown in FIG. 10, the tip of the holding portion 17 is disposed so as to be located in the internal space of the cylindrical joint body 1, and the heating wire 2 exposed in the heating wire exposure step is exposed. After the tip is hooked and held in the groove portion 18, the holding portion 17 is electrically rotated to wind up the heating wire 2 in the inner space of the joint body 1 in the direction of the central axis. As described above, since the heating wire 2 is buried at a position close to the inner peripheral surface 4 of the joint main body 1, the heating wire 2 is easily pulled out inward, and is taken out so as to wind around the outer periphery of the holding portion 17. Although not shown in each drawing, in each step including the heating wire take-out step, it is preferable to perform the work while fixing the joint main body 1 with a vise.
上記のように本発明によれば、ＥＦ継手のリサイクルに際し、熱可塑性樹脂製の継手本体１と、加熱ワイヤ２と、端子金具３を完全に分離することができるため、ＥＦ継手の粉砕後に粉砕片の比重差を利用して分別を行う従来技術に比べて、ＥＦ継手の資源循環効率を改善する技術、具体的には、ＥＦ継手のリサイクル過程で排出される廃棄物を削減し、ＥＦ継手を構成する部材（継手本体と加熱ワイヤと端子金具）を効率よくリサイクルすることができる。 As described above, according to the present invention, when recycling an EF joint, the joint body 1 made of a thermoplastic resin, the heating wire 2, and the terminal fitting 3 can be completely separated. A technology for improving the resource circulation efficiency of EF joints compared to the conventional technology of separating using the specific gravity difference between pieces, specifically, reducing waste discharged in the process of recycling EF joints, Can be efficiently recycled (the joint body, the heating wire, and the terminal fittings).
（他の実施形態）
上記の実施形態では、ＥＦ継手として、大径部と小径部とをテーパ部で接続した「異径ソケット」を用いて説明したが、本発明は、異径ソケットのみを対象とするものではなく、図１１に示す「同径ソケット」や、その他、エルボ、チーズ、キャップ、サドルなどの様々なＥＦ継手を対象とすることができる。
(Other embodiments)
In the embodiment described above, the EF joint is described using the “different diameter socket” in which the large diameter portion and the small diameter portion are connected by the tapered portion. However, the present invention is not intended only for the different diameter socket. 11 and various other EF joints such as elbows, cheeses, caps, and saddles.
図１１に示す「同径ソケット」では、継手本体１の左右に形成されたＥＦ受口２５、２６に、それぞれ、加熱ワイヤ２ａ、２ｂが螺旋状に埋設され、更に、これらの加熱ワイヤ２ａ、２ｂを接続する加熱ワイヤ２ｃも埋設されている。この「同径ソケット」の内周面４には、左右のＥＦ受口２５、２６を区切るストッパ２７が形成されている。 In the “equal-diameter socket” shown in FIG. 11, heating wires 2a and 2b are helically embedded in EF receiving ports 25 and 26 formed on the left and right of the joint body 1, respectively. A heating wire 2c for connecting 2b is also buried. A stopper 27 is formed on the inner peripheral surface 4 of the “same-diameter socket” to divide the left and right EF receptacles 25 and 26.
上記の実施形態では、めねじ部を備える端子金具３を前提として、端子金具引き抜き工程では、端子金具のめねじ部に引き抜き工具の先端のおねじを螺合させて作用点とし、かつ継手本体の外周面を支点として、てこの原理により、端子金具を継手本体から引き抜く方法を説明したが、端子金具３の引き抜き方法は特に限定されず、例えば、端子金具の頭部をペンチで保持して引っ張る方法や、端子金具の頭部をラチェットレンチで締込んでねじ切る方法などを採用することもできる。 In the above embodiment, assuming that the terminal fitting 3 has an internal thread, in the terminal fitting extracting step, an external thread at the tip of the extraction tool is screwed into the internal thread of the terminal fitting to make an action point, and The method of pulling out the terminal fitting from the joint body by the principle of leverage using the outer peripheral surface of the terminal as a fulcrum has been described. However, the method of pulling out the terminal fitting 3 is not particularly limited. For example, the head of the terminal fitting is held with pliers. A method of pulling, a method of tightening the head of the terminal fitting with a ratchet wrench, and cutting the terminal fitting can also be adopted.
上記の実施形態では、加熱ワイヤ露出工程において加熱ワイヤ２の「先端」を露出させる方法を説明したが、露出させる加熱ワイヤ２の位置は特に限定されず、例えば、図１１に示す「同径ソケット」をリサイクルする際には、加熱ワイヤ２ａ、２ｂを接続する加熱ワイヤ２ｃを露出させることもできる。この場合、露出させた加熱ワイヤ２ｃを切断して、加熱ワイヤ２ａと加熱ワイヤ２ｂを、それぞれ、別々に引き抜くことが好ましい。 In the above-described embodiment, the method of exposing the “tip” of the heating wire 2 in the heating wire exposing step has been described. However, the position of the heating wire 2 to be exposed is not particularly limited. When recycling "", the heating wire 2c connecting the heating wires 2a and 2b can be exposed. In this case, it is preferable that the exposed heating wire 2c is cut, and the heating wire 2a and the heating wire 2b are separately pulled out.
上記の実施形態では、保持具１６の保持部１７を電動回転させて、加熱ワイヤ２の巻き取りを行う方法を説明したが、加熱ワイヤ２の取り出し方法は特に限定されず、例えば、加熱ワイヤ２の一部を保持させた保持部１７を、継手本体１の中心で固定し、その周りで継手本体１を回転させる等の方法によって加熱ワイヤ２の巻き取りを行うこともできる。 In the above embodiment, the method of winding the heating wire 2 by electrically rotating the holder 17 of the holder 16 has been described. However, the method of taking out the heating wire 2 is not particularly limited. The heating wire 2 can be wound by a method in which the holding portion 17 holding a part of the heating wire 2 is fixed at the center of the joint main body 1 and the joint main body 1 is rotated therearound.
また、上記の実施形態では、「端子金具引き抜き工程」→「加熱ワイヤ露出工程」→「加熱ワイヤ取り出し工程」の順に作業を行う方法を説明したが、その他、「加熱ワイヤ露出工程」→「端子金具引き抜き工程」→「加熱ワイヤ取り出し工程」の順や、「加熱ワイヤ露出工程」→「加熱ワイヤ取り出し工程」→「端子金具引き抜き工程」の順に作業を行うこともできる。 Further, in the above-described embodiment, the method of performing the operation in the order of “terminal fitting withdrawing step” → “heating wire exposing step” → “heating wire removing step” has been described. The operations can be performed in the order of “metal fitting extracting step” → “heating wire extracting step” or “heating wire exposing step” → “heating wire extracting step” → “terminal fitting extracting step”.
１ 継手本体
２、２ａ、２ｂ、２ｃ 加熱ワイヤ
３ 端子金具
４ （継手本体の）内周面
５ （継手本体の）外周面
６ めねじ部
７ 頭部
８ 先端ピン部
９ 囲繞部
１０ 引き抜き工具
１１ おねじ部
１２ 支柱部
１３ 金属材
１４ 支柱部材
１５ 六角ボルト
１６ 保持具
１７ 保持部
１８ 溝部
１９ 半田ごて
２０ 蝶ボルト
２１ 把持部
２２ 長孔
２３ チャック
２４ シャンク
２５、２６ ＥＦ受口
２７ ストッパ
DESCRIPTION OF SYMBOLS 1 Joint main body 2, 2a, 2b, 2c Heating wire 3 Terminal fitting 4 Inner peripheral surface (of joint main body) 5 Outer peripheral surface (of joint main body) 6 Female thread part 7 Head 8 Tip pin part 9 Surrounding part 10 Extraction tool 11 Male thread part 12 Support part 13 Metal material 14 Support member 15 Hexagon bolt 16 Holder 17 Holding part 18 Groove part 19 Soldering iron 20 Butterfly bolt 21 Gripping part 22 Slot 23 Chuck 24 Shank 25, 26 EF socket 27 Stopper
Claims (5)
頭部を備える端子金具を引き抜く、端子金具引き抜き工程と、
加熱ワイヤの少なくとも一部を露出させる、加熱ワイヤ露出工程と、
露出させた加熱ワイヤを保持具で保持しながら、加熱ワイヤを取り出す、加熱ワイヤ取り出し工程とを含み、
前記端子金具引き抜き工程では、前記端子金具の頭部に、引き抜き工具を嵌合させて作用点とし、かつ継手本体の外周面を支点として、てこの原理により、前記端子金具を継手本体から引き抜くことを特徴とする電気融着継手のリサイクル方法。 A method of recycling an electro-fusion joint incorporating a heating wire and terminal fittings connected to both ends of the heating wire to a joint body made of a thermoplastic resin,
A terminal fitting withdrawing step of extracting the terminal fitting with the head ,
Exposing at least a portion of the heating wire, a heating wire exposure step,
While the exposed heating wires were held in the holder, take out the heating wire, viewed contains a heating wire extraction step,
In the terminal fitting pulling-out step, the terminal fitting is pulled out from the joint body by the leverage principle, with a drawing tool fitted to the head of the terminal fitting as an action point, and with the outer peripheral surface of the joint body as a fulcrum. A method for recycling an electro-fusion joint.
前記端子金具引き抜き工程では、前記端子金具のめねじ部に引き抜き工具の先端のおねじを螺合させて前記作用点とする、ことを特徴とする請求項１記載の電気融着継手のリサイクル方法。 The terminal fitting includes a female thread portion,
Wherein the terminal fitting drawing process, the tip of the male screw of the tool pulling the female screw portion of the terminal fitting is screwed to the working point, the recycling method of the electric fusion coupling as claimed in claim 1, wherein the .
前記加熱ワイヤ取り出し工程では、この保持部を電動で回転させて加熱ワイヤを巻き取る、ことを特徴とする請求項１〜３の何れかに記載の電気融着継手のリサイクル方法。 The holding tool is an electric winding tool including a holding unit that holds the heating wire,
The method for recycling an electro-fused joint according to any one of claims 1 to 3 , wherein in the heating wire take-out step, the holding portion is electrically rotated to wind up the heating wire.
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| JP2001355785A (en) * | 2000-06-13 | 2001-12-26 | Mitsubishi Plastics Ind Ltd | Heating wire for electro-fusion joint |
| JP2002219711A (en) * | 2001-01-26 | 2002-08-06 | Osaka Gas Co Ltd | Method for recycling electric wire-containing polyethylene resin pipe joint |
| JP2003117537A (en) * | 2001-10-12 | 2003-04-22 | Mitsui Chemicals Inc | Method for separating and removing electric heating wire of electric welded joint |
| JP5829062B2 (en) * | 2011-07-04 | 2015-12-09 | 株式会社ブリヂストン | Tire processing method |
| JP2013196762A (en) * | 2012-03-15 | 2013-09-30 | Fujitsu Component Ltd | Connector extraction tool |
| JP2015086911A (en) * | 2013-10-29 | 2015-05-07 | 積水化学工業株式会社 | Electrical fusion joint and heating wire removal method |
| JP2015196111A (en) * | 2014-03-31 | 2015-11-09 | 積水化学工業株式会社 | Joint pipe wire separation method, and wire separation device used for the same |
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