JPH03194291A - Pipe positioning tool - Google Patents

Pipe positioning tool

Info

Publication number
JPH03194291A
JPH03194291A JP1333484A JP33348489A JPH03194291A JP H03194291 A JPH03194291 A JP H03194291A JP 1333484 A JP1333484 A JP 1333484A JP 33348489 A JP33348489 A JP 33348489A JP H03194291 A JPH03194291 A JP H03194291A
Authority
JP
Japan
Prior art keywords
pipe
joint
holding part
welding
positioning tool
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.)
Granted
Application number
JP1333484A
Other languages
Japanese (ja)
Other versions
JPH0781666B2 (en
Inventor
Jinichiro Nakamura
中村　仁一郎
Kuniaki Onishi
国昭 大西
Kenji Mizukawa
賢司 水川
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 JP1333484A priority Critical patent/JPH0781666B2/en
Publication of JPH03194291A publication Critical patent/JPH03194291A/en
Publication of JPH0781666B2 publication Critical patent/JPH0781666B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/561—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using screw-threads being integral at least to one 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • 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
    • 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
    • B29C66/52297—Joining tubular articles involving the use of a socket said socket comprising slip-off prevention means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52298—Joining tubular articles involving the use of a socket said socket being composed by several elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—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

Abstract

PURPOSE:To decrease dispersion further with high welding strength obtained by protruding a protrusion unit, formed of material harder than a pipe or a joint, to the inner in internal peripheral surfaces of a pipe holding part or a joint holding part. CONSTITUTION:A pipe positioning tool is provided with a joint holding part 5 for holding one end part peripheral edge of a welding joint A and a pipe holding part 6 which is integrally formed in an outer side edge of the joint holding part 5 to hold the peripheral surface of a pipe P1. The joint holding part 5 and the pipe holding part 6 are provided in a manner wherein the respective shaft centers thereof are positioned in the same straight line. A protrusion unit 9 of triangular section is formed in internal peripheral surfaces of the vertically divided pipe holding part 6 and joint holding part 5. In this way, at the time of welding the joint to the pipe, uniform welding can be applied over the total periphery of a connection part. In such a way as mentioned, dispersion is decreased further with high welding strength obtainable.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は管位置決め具に関し、例えば、溶着継手と、こ
の継手の両端に挿入された２本の熱可塑性樹脂管とを、
それぞれの軸芯が同一直線上に位置するように位置決め
固定するのに利用される。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a pipe positioning tool, for example, a welded joint and two thermoplastic resin pipes inserted at both ends of the joint.
It is used to position and fix the respective axes so that they are located on the same straight line.

（従来の技術） 熱可塑性樹脂管同士を接続する際、受口部内周面に加熱
要素としての電熱線が埋め込まれた熱可塑性樹脂製溶着
継手を用い、この継手の受口部に前記管の端部を挿入し
た状態で前記電熱線に通電して発熱させ、これによって
受口部内周面及び管端部の外周面を溶融させて両管を接
続する技術が知られている。(Prior art) When connecting thermoplastic resin pipes, a thermoplastic resin welded joint in which a heating wire as a heating element is embedded in the inner peripheral surface of the socket part is used, and the socket part of the joint is connected to the pipe. A known technique is to connect the two tubes by applying electricity to the heating wire to generate heat with the end inserted, thereby melting the inner circumferential surface of the socket and the outer circumferential surface of the tube end.

ところで、このような接続方法においては、管と継手と
は、接続部分の全周面において均一な溶着が行われるよ
うに、前記通電後一定の溶着強度が生起されるまでの間
、互いの軸芯がずれないよう熱応力や熱変形に抗して強
固に位置決め固定しておく必要がある。By the way, in such a connection method, the pipe and the joint are aligned with each other's axes until a certain welding strength is generated after the energization, so that uniform welding is performed on the entire circumference of the connected part. It is necessary to firmly position and fix the core against thermal stress and thermal deformation so that the core does not shift.

このようなことから、従来、例えば特開昭６２−６２０
７４号公報にみられるような管位置決め装置が提案され
ている。For this reason, conventionally, for example, Japanese Patent Application Laid-Open No. 62-620
A tube positioning device as seen in Japanese Patent No. 74 has been proposed.

上記装置は、少なくとも１本のバーと、管径に対応して
異なる曲率の扇形切欠部を縁部に有するとともに前記バ
ー上を摺動可能となされた支持プレートとで構成され、
前記扇形切欠部に当てがった管をヘルドにより支持プレ
ートに固定するようにしたものである。The device is composed of at least one bar and a support plate having a fan-shaped cutout with a different curvature at the edge corresponding to the pipe diameter and capable of sliding on the bar,
The tube applied to the fan-shaped notch is fixed to the support plate by a heddle.

（発明が解決しようとする課題） しかしながら、上記した管位置決め装置は、あくまで管
の位置決め固定を図っているだけであり、継手までも位
置決め固定しようとするものではないため、管を相互の
軸芯が一致するように位置決め固定することはできても
、継手と管とを、相互の軸芯が一致するように位置決め
固定することができない。このため、管の全周にわたっ
て均一な溶着が行われないといった問題があった。そし
て、このように均一な溶着が行われていないと、溶着後
、管に外力が加わった場合に、管が継手の受口部分を中
心にして揺動することがあり、これが原因で溶着部に亀
裂が生じてそこから管内を流れる例えばガスや流体が漏
れるといった問題があった。(Problem to be Solved by the Invention) However, the above-mentioned pipe positioning device only aims at positioning and fixing the pipe, and does not attempt to position and fix the joint. Although it is possible to position and fix the joint and the pipe so that their axes match, it is not possible to position and fix the joint and the pipe so that their axes match. For this reason, there was a problem in that uniform welding was not performed over the entire circumference of the tube. If welding is not done uniformly in this way, if an external force is applied to the pipe after welding, the pipe may swing around the socket of the joint, which may cause the welded area to There is a problem in that cracks occur in the pipes and gas or fluid flowing through the pipes leaks through the cracks.

また、それとともに、管の固定をベルトにより行うもの
であるため、取り扱いがきわめて面倒であるといった問
題もあった。In addition, since the tube is fixed using a belt, there is also the problem that handling is extremely troublesome.

本発明は、上記した問題点に鑑みなされたもので、継手
と、この継手の両端に挿入された２木の管とを、溶着の
前後を通じてそれぞれの軸芯が同一直線上に位置するよ
うに位置決め固定することのできる管位置決め具を提供
しようとするものである。The present invention was made in view of the above-mentioned problems, and is designed to connect a joint and two wooden pipes inserted at both ends of the joint so that their respective axes are located on the same straight line before and after welding. It is an object of the present invention to provide a tube positioning tool that can be positioned and fixed.

（課題を解決するための手段） 本発明の管位置決め具は、溶着継手とこの溶着継手に挿
入された管とを、それぞれの軸芯が一致するように保持
する管位置決め具であって、一対の半割部材から構成さ
れ、各半割部材は、前記溶着継手の端部外周縁を保持す
る継手保持部と、該継手保持部と一体に形成され前記管
の外周面を保持する管保持部とを有し、且つ継手保持部
と管保持部とはそれぞれの軸芯が一致するようになされ
るとともに、少なくとも管保持部もしくは継手保持部の
内周面に前記管もしくは継手よりも堅い材質からなる突
起体が内方に突設されたものである。(Means for Solving the Problems) The pipe positioning tool of the present invention is a pipe positioning tool that holds a welded joint and a pipe inserted into the welded joint so that their respective axes coincide with each other. Each half member includes a joint holding part that holds the outer peripheral edge of the end of the welded joint, and a pipe holding part that is formed integrally with the joint holding part and holds the outer peripheral surface of the pipe. and the joint holding part and the pipe holding part are made so that their axes coincide with each other, and at least the inner circumferential surface of the pipe holding part or the joint holding part is made of a material harder than the pipe or the fitting. A projection body is provided that projects inward.

（作用） 例えば、２本の管を接続する場合、継手の両端開口部か
ら管をそれぞれ差し込み、この状態で管位置決め具によ
って継手及び管を保持する。(Function) For example, when connecting two pipes, the pipes are inserted through the openings at both ends of the joint, and in this state the joint and the pipes are held by a pipe positioning tool.

詳しくは、継手保持部により継手の一端部外周面を保持
するとともに、管保持部により差し込まれた管の外周面
を保持する。この時、継手保持部及び管保持部の内周面
に設けられた突起体は、継手及び管よりも堅いため、こ
れら継手及び管の外周面にくい込み、これによって継手
及び管が継手保持部及び管保持部に挾持される。このよ
うに挟持されることで、管は熱可塑性樹脂の持つ弾性反
発力の作用でその軸芯が管保持部の軸芯と一致するよう
に位置決めされるとともに、継手も同様に熱可塑性樹脂
の持つ弾性反発力の作用でその軸芯が継手保持部の軸芯
と一致するように位置決めされる。従って、同一直線上
に位置する管保持部と継手保持部とにそれぞれ位置決め
された継手と管とは同一直線」二に位置決め（芯出し）
されることになり、この結果、継手の内周面と管の外周
面との間の隙間（クリアランス）が全周にわたって一定
となる。Specifically, the joint holding portion holds the outer peripheral surface of one end of the joint, and the tube holding portion holds the outer peripheral surface of the inserted tube. At this time, the protrusions provided on the inner peripheral surfaces of the joint holding part and the pipe holding part are harder than the joint and the pipe, so they sink into the outer peripheral surfaces of these joints and the pipe, thereby causing the joint and the pipe to become attached to the joint holding part. It is held in the tube holding part. By being held in this way, the tube is positioned so that its axis coincides with the axis of the tube holding part due to the elastic repulsive force of the thermoplastic resin, and the joint is also positioned due to the elastic repulsive force of the thermoplastic resin. Due to the elastic repulsion force, the shaft is positioned so that its axis coincides with the shaft of the joint holding part. Therefore, the joint and the pipe that are positioned on the same straight line in the pipe holding part and the joint holding part are positioned on the same straight line (centering).
As a result, the gap (clearance) between the inner peripheral surface of the joint and the outer peripheral surface of the pipe becomes constant over the entire circumference.

（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.

まず、本発明の管位置決め具を説明するにあたり、溶着
継手について簡単に説明する。First, in explaining the pipe positioning tool of the present invention, a welded joint will be briefly explained.

溶着継手Ａは、第３図に示すように、円筒形に形成され
た継手本体１と、該継手本体１の両端部外周面から突設
された一対のボス２．２とを備えている。そして、ポリ
エチレン樹脂等の熱可塑性樹脂を素材として、例えば射
出成形によって形成されている。なお、前記ポス２は、
継手本体１と同時に一体に成形してもよいし、予め別体
成形しておき、継手本体１を成形する際に固着して一体
化してもよい。As shown in FIG. 3, the welded joint A includes a cylindrical joint body 1 and a pair of bosses 2.2 protruding from the outer peripheral surface of both ends of the joint body 1. And, it is formed by injection molding, for example, using a thermoplastic resin such as polyethylene resin as a material. Note that the POS 2 is
It may be integrally molded at the same time as the joint body 1, or it may be molded separately in advance and then fixed and integrated when the joint body 1 is molded.

前記継手本体１の内周部の軸方向略中央部には、開口端
から挿入される熱可塑性樹脂管（以下、単に管という。A thermoplastic resin tube (hereinafter simply referred to as a tube) is inserted from the open end into the approximately central axial portion of the inner peripheral portion of the joint body 1.

）Ｐ］、、Ｐ２を所定位置で挿入規制するだめの突起１
３が形成されている。突起１３は全周に形成されていて
もよく、あるいは全周の一部に形成されていてもよい。)P],, protrusion 1 for regulating insertion of P2 at a predetermined position
3 is formed. The protrusion 13 may be formed on the entire circumference, or may be formed on a part of the entire circumference.

また、この継手本体１の内周部には、加熱要素となる一
本のニクロム線等の電熱線３が、継手本体１０軸芯を中
心として螺旋状に埋設されている。Further, in the inner circumference of the joint body 1, a heating wire 3 such as a single nichrome wire serving as a heating element is embedded in a spiral shape with the axis of the joint body 10 as the center.

そして、この電熱線３は、前記突起１３を境として、一
方の管Ｐ１との溶着用となる第１群３１と、他方の熱可
塑性樹脂管Ｐ２との溶着用となる第２群３２とに分けて
配設されている。The heating wires 3 are divided into a first group 31 for welding to one pipe P1 and a second group 32 for welding to the other thermoplastic resin pipe P2, with the protrusion 13 as a boundary. They are arranged separately.

前記加熱要素としては、例えば、多数の細い長尺状電熱
線（炭素繊維、ニクロム線など）が束ねられた加熱抵抗
線であってもよいし、また、長さが１０〜２００鰭のニ
クロム線や炭素繊維等の電熱性繊維がシート状に抄造さ
れたものであってもよい。The heating element may be, for example, a heating resistance wire made of a bundle of many thin elongated heating wires (carbon fiber, nichrome wire, etc.), or a nichrome wire with a length of 10 to 200 fins. It may also be made of electrothermal fibers such as carbon fibers or carbon fibers formed into a sheet.

次に、本発明に係る管位置決め具を第１図乃至第３図を
参照して説明する。Next, a tube positioning tool according to the present invention will be explained with reference to FIGS. 1 to 3.

管位置決め具は、溶着継手Ａと、この溶着継手への一端
開口部から挿入された管Ｐ１とを同一直線上に位置させ
た状態で保持するもので、溶着継手Ａの一端部外周縁を
保持する継手保持部５と、該継手保持部５の外側縁に一
体に形成され、前記管Ｐ１の外周面を保持する管保持部
６とを存している。The pipe positioning tool holds the welded joint A and the pipe P1 inserted from the opening at one end of the welded joint in a state in which they are positioned on the same straight line, and holds the outer peripheral edge of one end of the welded joint A. A pipe holding part 6 is formed integrally with the outer edge of the joint holding part 5 to hold the outer circumferential surface of the pipe P1.

継手保持部５と管保持部６とはそれぞれの軸芯が同一直
線上に位置するように設けられており、これら継手保持
部５と管保持部６とで位置決め部７を構成している。The joint holding part 5 and the tube holding part 6 are provided so that their axes are located on the same straight line, and the joint holding part 5 and the pipe holding part 6 constitute a positioning part 7.

位置決め部７は、上位置決め部７ａと、下位置決め部７
ｂの半割部材に分割されており、左右の上位置決め部７
ａと、下位置決め部７ｂとはヒンジ７１により開閉自在
に構成されている。よって、上位置決め部７ａと下位置
決め部７ｂとは、溶着継手Ａと管Ｐ１とを保持する閉位
置と、この保持を開放する開位置とをとることができる
。The positioning section 7 includes an upper positioning section 7a and a lower positioning section 7.
It is divided into half members b, and the left and right upper positioning parts 7
a and the lower positioning portion 7b are configured to be openable and closable by a hinge 71. Therefore, the upper positioning part 7a and the lower positioning part 7b can take a closed position in which the welded joint A and the pipe P1 are held, and an open position in which this holding is released.

そして、前記上位置決め部７ａ及び下位置決め部７ｂは
アルミ鋳物製によって製造されている。The upper positioning part 7a and the lower positioning part 7b are made of aluminum casting.

また、前記ヒンジ７１と反対側に位置する上位置決め部
７ａと下位置決め部７ｂとの合わせ面にはクランプ７５
が設けられている。クランプ７５ば、」二位置決め部７
ａ側に設けられたスプリング状の係止部材７６と、下位
置決め部７ｂ側に設けられ、前記係止部材７６の先端部
と係止する被係止部材７７とから構成されており、係止
部材７６を被係止部材７７に係止させることによって上
位置決め部７ａと下位置決め部７ｂとを閉塞させた状態
で保持することができる。Further, a clamp 75 is provided on the mating surface of the upper positioning part 7a and the lower positioning part 7b located on the opposite side of the hinge 71.
is provided. Clamp 75, 2 positioning part 7
It is composed of a spring-like locking member 76 provided on the a side, and a locked member 77 provided on the lower positioning part 7b side that locks with the tip of the locking member 76. By locking the member 76 to the locked member 77, the upper positioning portion 7a and the lower positioning portion 7b can be held in a closed state.

また、上下に分割された管保持部６の内周面及び継手保
持部５の内周面には断面三角形状の突起体９が形成され
ている。突起体９は、管保持部６の内周面及び継手保持
部５の内周面の周方向に環状に設けられたもので、この
ように形成された複数の突起体９・・・が軸方向に連続
して設けられている。Furthermore, protrusions 9 having a triangular cross section are formed on the inner circumferential surface of the tube holding section 6 which is divided into upper and lower sections and on the inner circumferential surface of the joint holding section 5. The protrusions 9 are annularly provided in the circumferential direction of the inner circumferential surface of the tube holding part 6 and the inner circumferential surface of the joint holding part 5, and a plurality of protrusions 9 formed in this way are provided continuously in the direction.

次に、本発明の管位置決め具を使用して溶着継手へと管
とを溶着させる手順について説明する。Next, a procedure for welding a pipe to a welding joint using the pipe positioning tool of the present invention will be described.

まず、継手本体１の両端開口から管ＰＬ、Ｐ２をこの管
ＰＩ、Ｐ２の端部が突起１３に当たるまでそれぞれ差し
込む。そして、この状態で左右２つの管位置決め具によ
って溶着継手への両端部及びこの溶着継手へに差し込ま
れた管Ｐ１．Ｐ２を保持する。以下、管位置決め具を溶
着継手への一端部側に取り付ける場合について説明し、
溶着継手Ａの他端側への取り付けは同様であるため説明
を省略する。First, the pipes PL and P2 are respectively inserted through the openings at both ends of the joint body 1 until the ends of the pipes PI and P2 come into contact with the projections 13. In this state, the two ends of the welded joint and the pipe P1 inserted into the welded joint are connected by the two left and right pipe positioning tools. Hold P2. Below, we will explain the case where the pipe positioning tool is attached to one end of the welded joint.
Since the attachment to the other end side of the welded joint A is the same, the explanation will be omitted.

まず、上下に開放させた位置決め部７に溶着継手の一端
部及び管Ｐ１を配置し、上位置決め部７ａと下位置決め
部７ｂとを閉塞した後、クランプ７５によってこの位置
決め部７を閉塞状態で保持する。First, one end of the welded joint and the pipe P1 are placed in the vertically open positioning part 7, and after closing the upper positioning part 7a and the lower positioning part 7b, the clamp 75 holds this positioning part 7 in the closed state. do.

これにより、継手保持部５が溶着継手Ａの一端部の外周
面を保持するとともに、管保持部６が管Ｐ１の外周面を
保持する。この時、継手保持部５及び管保持部６の内周
面に設けられた突起体９・・・は溶着継手Ａ及び管Ｐ１
よりも堅いため、溶着継手Ａ及び管Ｐ１の外周面にくい
込み、これによって溶着継手Ａ及び管Ｐ１が継手保持部
５及び管保持部６に挟持される。このように挾持される
ことで、管Ｐ１は熱可塑性樹脂の持つ弾性反発力の作用
でその軸芯が管保持部６の軸芯と一致するように位置決
めされるとともに、溶着継手Ａも同様に熱可塑性樹脂の
持つ弾性反発力の作用でその軸芯が継手保持部５の軸芯
と一致するように位置決めされる。従って、同一直線上
に位置する管保持部６と継手保持部５とにそれぞれ位置
決めされた溶着継手Ａと管Ｐ１とは同一直線上に位置決
めされることになり、この結果、溶着継手Ａの内周面と
管Ｐ１の外周面との間に生じる隙間が全周にわたって一
定となる。Thereby, the joint holding part 5 holds the outer circumferential surface of one end of the welded joint A, and the pipe holding part 6 holds the outer circumferential surface of the pipe P1. At this time, the protrusions 9 provided on the inner peripheral surfaces of the joint holding part 5 and the pipe holding part 6 are connected to the welded joint A and the pipe P1.
Since the welded joint A and the pipe P1 are harder than the welded joint A and the pipe P1, the welded joint A and the pipe P1 are clamped by the joint holding part 5 and the pipe holding part 6. By being held in this way, the tube P1 is positioned so that its axis coincides with the axis of the tube holding part 6 due to the elastic repulsive force of the thermoplastic resin, and the welded joint A is also positioned in the same manner. The thermoplastic resin is positioned so that its axis coincides with the axis of the joint holding part 5 due to the elastic repulsive force of the thermoplastic resin. Therefore, the welded joint A and the pipe P1, which are positioned on the same straight line in the pipe holding part 6 and the joint holding part 5, respectively, are positioned on the same straight line, and as a result, the inside of the welded joint A is positioned on the same straight line. The gap generated between the circumferential surface and the outer circumferential surface of the pipe P1 is constant over the entire circumference.

このようにして熱可塑性樹脂管Ｐｉ、Ｐ２と継手本体１
とを管位置決め具で保持した後、端子４４にコネクタを
接続して一定電圧をかけ、電熱線３を発熱させる。そし
て、この熱で継手本体１の内周部及び管Ｐ１．．Ｐ２の
外周部が加熱溶融されることから、継手本体１と管ＰＩ
、Ｐ２とが溶着する。In this way, the thermoplastic resin pipes Pi, P2 and the joint body 1
After holding it with a tube positioning tool, a connector is connected to the terminal 44 and a constant voltage is applied to cause the heating wire 3 to generate heat. This heat causes the inner circumference of the joint body 1 and the pipe P1. ．． Since the outer periphery of P2 is heated and melted, the joint body 1 and the pipe PI
, P2 are welded together.

従って、継手本体１と管Ｐ１．Ｐ２とは、前述したよう
に芯出しされた状態で溶着されるため、継手本体１の内
周面と管Ｐ１、Ｐ２の外周面との間の隙間が一定に確保
された状態で溶着される。Therefore, the joint body 1 and the pipe P1. P2 is welded in a centered state as described above, so it is welded with a constant gap between the inner circumferential surface of the joint body 1 and the outer circumferential surfaces of the pipes P1 and P2. .

これによって継手本体１と管ＰＩ、Ｐ２の外周面とは全
周に亘って均等に熔融し、同時に、常に周方向に均一な
溶融樹脂圧を受けるので、溶着むらのない適切な状態で
溶着することができる。また、溶着継手へと管ＰＩ、Ｐ
２とが傾いた状態で接合されるといった不具合も防止で
きる。As a result, the joint body 1 and the outer circumferential surfaces of the pipes PI and P2 are melted evenly over the entire circumference, and at the same time, the molten resin pressure is always uniform in the circumferential direction, so that welding is achieved in an appropriate state with no uneven welding. be able to. Also, pipes PI and P to the welded joint
It is also possible to prevent problems such as the two parts being joined in an inclined state.

なお、突起体９は、本例に示すものに限定されるもので
なく、例えば、第４図に示すように粒状の突起９１を基
盤目の交点位置に設けたものや、第５図に示すように周
方向に環状に形成された突起体９２を軸方向に適宜間隔
を隔てて配置したもの、また、第６図に示すように軸方
向に連続もしくは不連続に形成した突起体９３を、周方
向に適宜間隔を隔てて配置したものでもよい。Note that the protrusions 9 are not limited to those shown in this example; for example, as shown in FIG. 4, granular protrusions 91 are provided at the intersection of the base grains, or as shown in FIG. As shown in FIG. 6, protrusions 92 formed in an annular shape in the circumferential direction are arranged at appropriate intervals in the axial direction, and protrusions 93 formed continuously or discontinuously in the axial direction as shown in FIG. They may be arranged at appropriate intervals in the circumferential direction.

また、管位置決め具は、本例では２つの管位置決め具を
用いて溶着継手Ａの両端部にそれぞれ別々に取り付ける
ように構成したものを示したが、溶着継手Ａの両端部に
取り付けられる２つの管位置決め具の上位置決め部７ａ
同士及び下位置決め部７ｂ同士を連設して構成し、溶着
継手両端部に同時に取り付けるようにしてもよい。In addition, in this example, two pipe positioning tools are used to attach them to both ends of the welded joint A separately. Upper positioning part 7a of pipe positioning tool
The lower positioning parts 7b and the lower positioning parts 7b may be arranged in series and attached to both ends of the welded joint at the same time.

（発明の効果） 以上述べたように、本発明の管位置決め具によれば、継
手と、この継手に挿入された管とをそれぞれの軸芯が同
一直線上に位置するように位置決め固定することができ
る。これにより継手と管との溶着時において、接合部分
の全周にわたって均一な溶着を施すことができ、ばらつ
きが少なく且つ高い溶着強度を得ることができる。しか
も、構成が簡単であり、継手と管との接合時における取
り付けを簡単に行うことができる。(Effects of the Invention) As described above, according to the pipe positioning tool of the present invention, the joint and the pipe inserted into the joint can be positioned and fixed so that their axes are located on the same straight line. I can do it. Thereby, when welding the joint and the pipe, uniform welding can be performed over the entire circumference of the joint portion, and high welding strength with little variation can be obtained. Furthermore, the structure is simple, and the fitting can be easily performed when joining the joint and the pipe.

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

第１図は本発明に係る管位置決め具を一部断面で示す側
面図、第２図は同正面図、第３図は管位置決め具により
管と溶着継手を位置決め保持した状態を示す断面図、第
４図及び第６図は突起体の他の実施態様を示す斜視図で
ある。 ２ ５・・・継手保持部 ６・・・管保持部 ９・・・突起体FIG. 1 is a side view, partially in section, of a pipe positioning tool according to the present invention, FIG. 2 is a front view of the same, and FIG. 3 is a cross-sectional view showing a state in which the pipe and welded joint are positioned and held by the pipe positioning tool. FIGS. 4 and 6 are perspective views showing other embodiments of the protrusion. 2 5...Joint holding part 6...Pipe holding part 9...Protrusion

Claims (1)

【特許請求の範囲】 １）溶着継手とこの溶着継手に挿入された管とを、それ
ぞれの軸芯が一致するように保持する管位置決め具であ
って、 一対の半割部材から構成され、各半割部材 は、前記溶着継手の端部外周縁を保持する継手保持部と
、該継手保持部と一体に形成され前記管の外周面を保持
する管保持部とを有し、且つ継手保持部と管保持部とは
それぞれの軸芯が一致するようになされるとともに、少
なくとも管保持部もしくは継手保持部の内周面に前記管
もしくは継手よりも堅い材質からなる突起体が内方に突
設されたことを特徴とする管位置決め具。[Scope of Claims] 1) A pipe positioning tool that holds a welded joint and a pipe inserted into the welded joint so that their respective axes coincide with each other, and is composed of a pair of half-split members, and each The half member has a joint holding part that holds the outer peripheral edge of the end of the welded joint, and a pipe holding part that is formed integrally with the joint holding part and holds the outer peripheral surface of the pipe, and the joint holding part The axes of the pipe holding part and the pipe holding part are made to coincide with each other, and at least a protrusion made of a material harder than the pipe or fitting is provided on the inner circumferential surface of the pipe holding part or the fitting holding part to protrude inwardly. A pipe positioning tool characterized by:
JP1333484A 1989-12-22 1989-12-22 Pipe positioning tool Expired - Lifetime JPH0781666B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1333484A JPH0781666B2 (en) 1989-12-22 1989-12-22 Pipe positioning tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1333484A JPH0781666B2 (en) 1989-12-22 1989-12-22 Pipe positioning tool

Publications (2)

Publication Number Publication Date
JPH03194291A true JPH03194291A (en) 1991-08-23
JPH0781666B2 JPH0781666B2 (en) 1995-09-06

Family

ID=18266577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1333484A Expired - Lifetime JPH0781666B2 (en) 1989-12-22 1989-12-22 Pipe positioning tool

Country Status (1)

Country Link
JP (1) JPH0781666B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH045021A (en) * 1990-04-23 1992-01-09 Takenaka Komuten Co Ltd Joining jig for flexible piping
JP2018173147A (en) * 2017-03-31 2018-11-08 積水化学工業株式会社 Temporary fixing structure of resin pipes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH045021A (en) * 1990-04-23 1992-01-09 Takenaka Komuten Co Ltd Joining jig for flexible piping
JP2018173147A (en) * 2017-03-31 2018-11-08 積水化学工業株式会社 Temporary fixing structure of resin pipes

Also Published As

Publication number Publication date
JPH0781666B2 (en) 1995-09-06

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