JPH0781668B2 - Pipe positioning tool - Google Patents

Pipe positioning tool

Info

Publication number
JPH0781668B2
JPH0781668B2 JP1333486A JP33348689A JPH0781668B2 JP H0781668 B2 JPH0781668 B2 JP H0781668B2 JP 1333486 A JP1333486 A JP 1333486A JP 33348689 A JP33348689 A JP 33348689A JP H0781668 B2 JPH0781668 B2 JP H0781668B2
Authority
JP
Japan
Prior art keywords
pipe
joint
thermoplastic resin
welding
outer peripheral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP1333486A
Other languages
Japanese (ja)
Other versions
JPH03194293A (en
Inventor
仁一郎 中村
国昭 大西
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 JP1333486A priority Critical patent/JPH0781668B2/en
Publication of JPH03194293A publication Critical patent/JPH03194293A/en
Publication of JPH0781668B2 publication Critical patent/JPH0781668B2/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
    • B29C65/78—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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

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、特に、溶着継手と、この
継手の両端受口部に挿入された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。Description: TECHNICAL FIELD The present invention relates to a pipe positioning tool, and more particularly, to a welding joint and two thermoplastic resin pipes inserted into both ends of the joint, respectively. It is used to position and fix the shaft center of the so that it is 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 to each other, a thermoplastic resin welding joint in which a heating wire as a heating element is embedded in the inner peripheral surface of the receiving portion is used, and the joint of the pipe is connected to the receiving portion of this joint. There is known a technique in which the heating wire is energized to generate heat when the end portion is inserted, and thereby the inner peripheral surface of the receiving portion and the outer peripheral surface of the pipe end are melted to connect the both pipes.

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融着が行われるよ
うに、前記通電後一定の融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 connected to each other until a constant fusion strength is generated after the energization so that uniform fusion is performed on the entire peripheral surface of the connection portion. It is necessary to firmly position and fix it against thermal stress and thermal deformation so that the axis center of is not displaced.

このようなことから、従来、例えば特開昭62−62074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, a pipe positioning device as disclosed in, for example, Japanese Patent Laid-Open No. 62-62074 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
異なる曲線の扇形切欠部を縁部に有するとともに前記バ
ー上を摺動可動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ベルトにより支持プレ
ートに固定するようにしたものである。The above-mentioned device is composed of at least one bar, and a support plate which has a fan-shaped notch part of a different curve corresponding to a pipe diameter at an edge part and is slidably movable on the bar,
The tube applied to the fan-shaped notch is fixed to the support plate by a belt.

（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
中心にして摺動することがあり、これが原因で管に亀裂
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。(Problems to be Solved by the Invention) However, the above-mentioned pipe positioning device merely aims at positioning and fixing the pipe, and does not attempt to position and fix even the joint. However, the joint and the pipe cannot be positioned and fixed so that their mutual axial centers coincide with each other. Therefore, there is a problem that uniform welding is not performed over the entire circumference of the pipe. If such uniform welding is not performed, the pipe may slide around the receiving part of the joint when an external force is applied to the pipe after welding, which causes the pipe to There is a problem that a crack is generated and gas or fluid leaks from the crack in the pipe.

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。At the same time, there is a problem that handling of the tube is extremely troublesome because the tube is fixed by a belt.

本発明は、上記した問題点に鑑みなされたもので、継手
と、この継手の受口部に挿入された２本の管とを、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 has been made in view of the above-mentioned problems, and a shaft of a joint and two pipes inserted into a socket of the joint are positioned 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 as described above.

（課題を解決するための手段） 上記目的を達成するため、本発明に係る管位置決め具
は、熱可塑性樹脂により筒状に形成され、両端部が受口
部となされるとともに、これら受口部の内周部に加熱要
素が埋め込まれた溶着継手と、この溶着継手の受口部に
挿入された熱可塑性樹脂管とを、それぞれの軸芯が一致
するように位置決め固定するのに使用されるものであっ
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面と当接する継手当接部と、この継
手当接部と連設部を介して設けられ前記熱可塑性樹脂管
の外周面と当接する複数本の管当接片とを有するもので
ある。(Means for Solving the Problems) In order to achieve the above object, a pipe positioning tool according to the present invention is formed of a thermoplastic resin into a tubular shape, and both end portions thereof serve as receiving portions, and these receiving portions are also provided. It is used to position and fix the welding joint in which the heating element is embedded in the inner peripheral portion of the and the thermoplastic resin tube inserted into the receiving portion of this welding joint so that their respective axial cores coincide with each other. It comprises a pair of half-divided members, each half-divided member is provided with a joint abutting portion that abuts on the outer peripheral surface of the end portion of the welding joint, and a joint abutting portion and a connecting portion. And a plurality of pipe contact pieces that contact the outer peripheral surface of the thermoplastic resin pipe.

（作用） 本発明の管位置決め具を用いて溶着継手と熱可塑性樹脂
管とを位置決め固定し、両者を溶着するには、まず、溶
着継手の各受口部内に熱可塑性樹脂管を挿入してから、
管位置決め具の半割部材を溶着継手の端部と管とを挟む
ようにして合わせる。すなわち、各半割部材の継手当接
部を溶着継手の端部外周面に当接させるとともに、連設
部の内側面を溶着継手の端面に当接させる。これで、各
半割部材の管当接片が熱可塑性樹脂管の外周面に沿う状
態となる。(Operation) In order to position and fix the welding joint and the thermoplastic resin pipe using the pipe positioning tool of the present invention and weld them together, first insert the thermoplastic resin pipe into each of the receiving portions of the welding joint. From
The half members of the pipe positioning tool are fitted so as to sandwich the end of the welding joint and the pipe. That is, the joint contact portion of each half member is brought into contact with the outer peripheral surface of the end portion of the welding joint, and the inner side surface of the continuous portion is brought into contact with the end surface of the welding joint. With this, the pipe contact pieces of the respective half members are in a state of being along the outer peripheral surface of the thermoplastic resin pipe.

次に、両方の半割部材の管当接片を、クランプ等の既存
の締め付け具を用いて締め付ける。これによって、管は
締め付け具により管当接片を介して締め付けられること
になるが、このとき、管の軸芯が溶着継手の軸芯からず
れていると、各管当接片に加わる力が不均一になる。す
ると、各管当接片は、その形態が片体であることから弾
性復元力を発揮し、上記力が均一になるように初期の位
置に復帰しようとする。その結果、管はその軸芯が溶着
継手の軸芯に一致する位置に移動され、芯出しが行われ
る。Next, the tube contacting pieces of both the half members are tightened by using an existing tightening tool such as a clamp. As a result, the pipe is clamped by the clamp through the pipe abutment piece. At this time, if the axis of the pipe deviates from the axis of the welding joint, the force applied to each pipe abutment piece will be reduced. It becomes uneven. Then, each of the tube contact pieces exerts an elastic restoring force because the shape thereof is a single body, and tries to return to the initial position so that the force becomes uniform. As a result, the tube is moved to a position where its axis coincides with the axis of the welding joint, and centering is performed.

上述のようにして溶着継手と熱可塑性樹脂管とが芯出し
された状態に位置決め固定されると、受口部の内周面と
熱可塑性樹脂管の外周面との間のクリアランスが一定と
なるので、この後、通電により加熱要素を発熱さえれ
ば、受口部の内周部と熱可塑性樹脂管の外周部とが均一
に溶融し、互いに良好な状態で溶着される。When the welding joint and the thermoplastic resin pipe are positioned and fixed in the centered state as described above, the clearance between the inner peripheral surface of the receiving portion and the outer peripheral surface of the thermoplastic resin pipe becomes constant. Therefore, after that, if the heating element is heated by energization, the inner peripheral portion of the receiving portion and the outer peripheral portion of the thermoplastic resin pipe are uniformly melted and welded to each other in a good condition.

（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 example of the present invention will be described with reference to the drawings.

第１図は本発明に係る管位置決め具を示す正面図、第２
図は第１図におけるII−II線に沿う部分断面側面図であ
る。FIG. 1 is a front view showing a pipe positioning tool according to the present invention, and FIG.
The drawing is a partial cross-sectional side view taken along the line II-II in FIG.

この管位置決め具１は、一対の半割部材11,12から構成
されたものである。The pipe positioning tool 1 is composed of a pair of half members 11 and 12.

上記各半割部材11,12は、溶着継手Ｊ（第３図及び第４
図参照）の端部外周面と当接する継手当接部13,14と、
この継手当接部13,14と連設部15、16を介して設けられ
熱可塑性樹脂管P1,P2の外周面と当接する複数本の管当
接片17…,18…とを有するものである。The above-mentioned half members 11 and 12 are welded joints J (Figs. 3 and 4).
(See the figure) Joint contact parts 13 and 14 that contact the outer peripheral surface of the end,
This joint abutting portion 13, 14 and a plurality of pipe abutting pieces 17, ..., 18 ... Abutting on the outer peripheral surfaces of the thermoplastic resin pipes P1, P2 provided via the connecting portions 15, 16 are provided. is there.

このようになる半割部材11,12は、合成樹脂又は金属か
ら形成されている。The half members 11 and 12 thus configured are made of synthetic resin or metal.

前記連設部15,16は、その内周面151,161が熱可塑性樹脂
管P1,P2の外周面と略接するようになされており、前記
管当接片17…,18…は、その内面がこれら連設部15,16の
内周面151,161と面一となるように設けられている。The inner peripheral surfaces 151, 161 of the connecting portions 15, 16 are arranged so as to be substantially in contact with the outer peripheral surfaces of the thermoplastic resin pipes P1, P2. It is provided so as to be flush with the inner peripheral surfaces 151, 161 of the continuous portions 15, 16.

管当接片17…,18…は、図示例ではそれぞれ３本ずつ等
間隔で同一円周上に配されているが、これに限るもので
はない。In the illustrated example, three pipe contact pieces 17, 18 are arranged at equal intervals on the same circumference, but the number is not limited to this.

次に、上記のようになる管位置決め具１を用いて溶着継
手Ｊと熱可塑性樹脂管P1,P2とを位置決め固定し、両者
を溶着する手順について説明する。Next, a procedure for positioning and fixing the welding joint J and the thermoplastic resin pipes P1 and P2 using the pipe positioning tool 1 as described above, and welding the both will be described.

まず、溶着継手Ｊの各受口部S,S内に熱可塑性樹脂管P1,
P2を挿入してから、管位置決め具1,1の半割部材11,12を
溶着継手Ｊの端部と管P1,P2とをそれぞれ挟むようにし
て合わせる。First, the thermoplastic resin pipes P1,
After inserting P2, the half members 11 and 12 of the pipe positioning tools 1 and 1 are fitted so as to sandwich the ends of the welded joint J and the pipes P1 and P2, respectively.

すなわち、半割部材11,12の継手当接部13,14を溶着継手
Ｊの端部外周面に当接させるとともに、連設部15,16の
内側面を溶着継手Ｊの端面に当接させる。これで、各半
割部材11,12の管当接片17…,18…が熱可塑性樹脂管P1,P
2の外周面に沿う状態となる。That is, the joint contact portions 13 and 14 of the half members 11 and 12 are brought into contact with the outer peripheral surface of the end portion of the welding joint J, and the inner side surfaces of the continuous portions 15 and 16 are brought into contact with the end surface of the welding joint J. . With this, the pipe abutting pieces 17 ..., 18 ... Of the respective half members 11, 12 become the thermoplastic resin pipes P1, P.
It becomes a state along the outer peripheral surface of 2.

次に、第３図及び第４図に示すように、両方の半割部材
11,12の管当接片17…,18…を、クランプ等の既存の締め
付け具Ｃを用いて締め付ける。これによって、管P1,P2
は締め付け具Ｃにより管当接片17…,18…を介して締め
付けられることとなるが、このとき、管P1,P2の軸芯が
溶着継手Ｊの軸芯からずれていると、各管当接片17…,1
8…に加わる力が不均一になる。すると、各管当接片17
…,18…は、その形態が片体であることから弾性復元力
を発揮し、上記力が均一になるように初期の位置に復帰
しようとする。その結果、管P1,P2はその軸芯が溶着継
手Ｊの軸芯に一致する位置に移動され、芯出しが行われ
る。Next, as shown in FIG. 3 and FIG.
The tube abutting pieces 17, 18 of 11 and 12 are tightened by using an existing tightening tool C such as a clamp. This allows the pipes P1, P2
Will be tightened by the tightening tool C via the pipe abutment pieces 17 ..., 18 ..., but at this time, if the axes of the pipes P1 and P2 deviate from the axes of the welding joint J, each pipe Contact piece 17 ..., 1
The force applied to 8 ... becomes uneven. Then, each pipe contact piece 17
.., 18 ... exerts elastic restoring force because the form is a single body, and tries to return to the initial position so that the above force becomes uniform. As a result, the pipes P1 and P2 are moved to a position where their axes coincide with the axes of the welding joint J, and centering is performed.

上述のようにして溶着継手Ｊと熱可塑性樹脂管P1,P2と
が芯出しされた状態に位置決め固定されると、受口部S,
Sの内周面と熱可塑性樹脂管P1,P2の外周面との間のクリ
アランスが一定となるので、この後、溶着継手Ｊの加熱
要素Ｈを通電により発熱させれば、受口部S,Sの内周部
と熱可塑性樹脂管P1,P2の外周部とが均一に溶融し、互
いに良好な状態で溶着される。図中の符号Ｂはボス、Ｔ
はこのボスＢ内に設けられた端子をそれぞれ示してい
る。When the welding joint J and the thermoplastic resin pipes P1 and P2 are positioned and fixed in the centered state as described above, the receiving portion S,
Since the clearance between the inner peripheral surface of S and the outer peripheral surfaces of the thermoplastic resin pipes P1 and P2 is constant, if the heating element H of the welding joint J is subsequently energized to generate heat, the receiving portion S, The inner peripheral portion of S and the outer peripheral portions of the thermoplastic resin pipes P1 and P2 are uniformly melted and welded together in a good condition. Reference symbol B in the figure is a boss, T
Indicate the terminals provided in the boss B, respectively.

なお、管当接片17…,18…は、上記実施例では３本ずつ
等間隔で設けられているが、これに限らず、例えば第５
図に示すように、スリット状の隙間19…を介して連なる
ように設けられていてもよい。また、管当接片17…,18
…は、第６図に示すように、連設部15（16）の前後に突
出するように設けられていてもよい。The pipe abutting pieces 17, ..., 18 are provided at three equal intervals in the above embodiment, but the invention is not limited to this, and the pipe abutting pieces 17 ,.
As shown in the figure, they may be provided so as to be continuous through a slit-shaped gap 19. Also, the pipe contact pieces 17 ..., 18
, May be provided so as to project in front of and behind the continuous portion 15 (16), as shown in FIG.

また、前記継手当接部13,14も、第５図及び第６図に示
すように、スリット131（141）が設けられていてもよ
い。この場合、スリット131（141）によって継手当接部
13,14に弾性が付与されるので、溶着継手Ｊの成形上の
寸法誤差を吸収することができる。Further, the joint contact portions 13 and 14 may also be provided with slits 131 (141) as shown in FIGS. 5 and 6. In this case, the slit 131 (141) allows
Since elasticity is imparted to 13, 14, it is possible to absorb a dimensional error in molding the welding joint J.

（発明の効果） 以上説明したように、本発明の位置決め具は、溶着継手
と、この継手の両端受口部内に挿入された２本の熱可塑
性樹脂管とを、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ができ
るものである。したがって、溶着継手と熱可塑性樹脂管
とを、熱可塑性樹脂管が溶着継手に対して傾いた状態で
接合されるといったことがなく、管を溶着むらのない適
切な状態で溶着することができる。しかも、管当接片を
既存の締め付け具で挟持するだけで芯出しができるの
で、取り扱いが容易であり、作業性にも優れている。(Effects of the Invention) As described above, the positioning tool of the present invention includes the welding joint and the two thermoplastic resin tubes inserted into the both end receiving portions of the joint, before and after the welding. The core can be positioned and fixed so that the core is located on the same straight line. Therefore, the welding joint and the thermoplastic resin pipe are not joined in a state where the thermoplastic resin pipe is inclined with respect to the welding joint, and the pipe can be welded in an appropriate state without uneven welding. Moreover, since the tube abutment piece can be centered by simply sandwiching it with existing fasteners, it is easy to handle and excellent in workability.

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

第１図は本発明に係る管位置決め具を示す正面図、第２
図は第１図におけるII−II線に沿う部分断面側面図、第
３図は本発明に係る管位置決め具の使用状態を示す正面
図、第４図は第３図におけるIV−IV線に沿う部分断面側
面図、第５図及び第６図はそれぞれ他の実施例を示す部
分斜視図である。 １…管位置決め具、11,12…半割部材 13,14…継手当接部 15,16…連設部 17,18…管当接片 Ｊ…溶着継手、Ｓ…受口部 P1,P2…熱可塑性樹脂管FIG. 1 is a front view showing a pipe positioning tool according to the present invention, and FIG.
The drawing is a partial cross-sectional side view taken along the line II-II in FIG. 1, FIG. 3 is a front view showing the usage state of the pipe positioning tool according to the present invention, and FIG. 4 is taken along the line IV-IV in FIG. Partial sectional side views, FIG. 5 and FIG. 6 are partial perspective views showing other embodiments. 1 ... Pipe positioning device, 11, 12 ... Half-divided member 13,14 ... Joint contact part 15,16 ... Continuously installed part 17,18 ... Pipe contact piece J ... Weld joint, S ... Receptacle part P1, P2 ... Thermoplastic pipe

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】熱可塑性樹脂により筒状に形成され、両端
部が受口部となされるとともに、これら受口部の内周部
に加熱要素が埋め込まれた溶着継手と、この溶着継手の
受口部に挿入された熱可塑性樹脂管とを、それぞれの軸
芯が一致するように位置決め固定するのに使用されるも
のであって、 一対の半割部材から構成され、各半割部材は、前記溶着
継手の端部外周面と当接する継手当接部と、この継手当
接部と連設部を介して設けられ前記熱可塑性樹脂管の外
周面と当接する複数本の管当接片とを有するものである
ことを特徴とする管位置決め具。1. A welding joint, which is formed of a thermoplastic resin in a tubular shape, has both ends serving as receiving portions, and heating elements embedded in the inner peripheral portions of these receiving portions, and a receiving joint for the welding coupling. A thermoplastic resin tube inserted into the mouth is used for positioning and fixing such that the respective axial cores thereof coincide with each other, and is composed of a pair of half-split members, each half-split member comprising: A joint abutting portion that abuts on the outer peripheral surface of the end portion of the welding joint, and a plurality of pipe abutting pieces that abut on the outer peripheral surface of the thermoplastic resin pipe provided via the joint abutting portion and a connecting portion. A pipe positioning tool characterized by having.
JP1333486A 1989-12-22 1989-12-22 Pipe positioning tool Expired - Lifetime JPH0781668B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1333486A JPH0781668B2 (en) 1989-12-22 1989-12-22 Pipe positioning tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1333486A JPH0781668B2 (en) 1989-12-22 1989-12-22 Pipe positioning tool

Publications (2)

Publication Number Publication Date
JPH03194293A JPH03194293A (en) 1991-08-23
JPH0781668B2 true JPH0781668B2 (en) 1995-09-06

Family

ID=18266601

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1333486A Expired - Lifetime JPH0781668B2 (en) 1989-12-22 1989-12-22 Pipe positioning tool

Country Status (1)

Country Link
JP (1) JPH0781668B2 (en)

Families Citing this family (3)

* 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
EP1745917B1 (en) * 2005-07-18 2013-03-06 Georg Fischer Wavin AG Electrofusion fitting
CN108215219A (en) * 2017-12-28 2018-06-29 贵州晟扬管道科技有限公司 A kind of large-diameter pipeline sweating soldering device and welding method

Also Published As

Publication number Publication date
JPH03194293A (en) 1991-08-23

Similar Documents

Publication Publication Date Title
JP3620121B2 (en) Optical connector and assembly method
US9644774B2 (en) Welding joint and welding method for same, welding device, welding joint, resin pipe welding device and welding method
US4851647A (en) Process for welding butt-jointed plastic tubes and welding device for performing the process
JPH0781668B2 (en) Pipe positioning tool
JP2001522026A (en) Weldable clamps for conduits made of heat-weldable materials
US4541145A (en) Device for clamping the split portion of a split heat-shrinkable sleeve
JP5400367B2 (en) Electric fusion joint
JPH0774678B2 (en) Welding joint
JPH03194291A (en) Pipe positioning tool
JPH07156276A (en) Pipe material connecting method, pipe material connecting device, and pipe material
JPH0419494A (en) Electric fusion joint
JPH03194295A (en) Welding joint
JP2000346243A (en) Centering tool
JPH04171392A (en) Electrically fused pipe joint
JPH0781667B2 (en) Pipe positioning tool
JPH07145897A (en) Electric fusion joint
JPH0211997A (en) Fusion joining structure and method thereof for thermosetting plastic pipe
JP7689853B2 (en) Clamp and electric fusion joint unit
JP3152712B2 (en) Electric fusion joint
JPH0648238Y2 (en) Welding joint
JP2880040B2 (en) Plastic pipe fittings
EP0114058B1 (en) Method for connecting pipes being provided with an inner protective cladding
JPH07158787A (en) Electric fusing member having insert hole part
JPH1113983A (en) Electric welding joint
JPH11344192A (en) Joint structure of electric fusion joint