JP2001009917A - Bonding method for thermoplastic resin tubular bodies - Google Patents

Bonding method for thermoplastic resin tubular bodies

Info

Publication number
JP2001009917A
JP2001009917A JP18762699A JP18762699A JP2001009917A JP 2001009917 A JP2001009917 A JP 2001009917A JP 18762699 A JP18762699 A JP 18762699A JP 18762699 A JP18762699 A JP 18762699A JP 2001009917 A JP2001009917 A JP 2001009917A
Authority
JP
Japan
Prior art keywords
joint
joining
thermoplastic resin
pipe
sliding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP18762699A
Other languages
Japanese (ja)
Inventor
Takashi Oguchi
貴士 小口
Ryosuke Ito
良輔 伊藤
Koji Harada
浩次 原田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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 JP18762699A priority Critical patent/JP2001009917A/en
Publication of JP2001009917A publication Critical patent/JP2001009917A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
    • B29C66/52241—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces
    • 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
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0672—Spin welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
    • 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
    • B29C66/5223—Joining tubular articles for forming corner connections or elbows, e.g. for making V-shaped pieces
    • B29C66/52231—Joining tubular articles for forming corner connections or elbows, e.g. for making V-shaped pieces with a right angle, e.g. for making L-shaped pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—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

Landscapes

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

Abstract

PROBLEM TO BE SOLVED: To provide the bonding method capable of obtaining a high strength bonded object usable even for a high pressure use. SOLUTION: In a method for bonding an object A to be bonded having a tubular end part comprising a thermoplastic resin and at least one object B to be bonded having a tubular end part comprising a thermoplastic resin by slide fusion, a first process for inserting the object B to be bonded in the object A to be bonded having a taper part reduced in inner diameter inwardly from its end part and a second process for applying the force in the insertion direction to the object A to be bonded to the object B to be bonded while sliding at least one of the objects to be bonded are provided.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は熱可塑性樹脂よりな
る管状体の摺動溶着による摩擦接合において、ガス用、
上水道用、給水給湯用等の耐圧配管にも用い得る高強度
の接合体が得られる熱可塑性樹脂管状体の接合方法に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to friction welding by sliding welding of a tubular body made of a thermoplastic resin, for gas,
The present invention relates to a method of joining a thermoplastic resin tubular body that can provide a high-strength joined body that can be used for pressure-resistant piping for water supply, hot water supply, hot water supply, and the like.

【０００２】[0002]

【従来の技術】熱可塑性樹脂管等を接続する手段とし
て、２つの接合対象物の接合面に摺動運動を与え、摩擦
で急速に熱を付与して溶融接合する方法が知られてい
る。例えば、特開昭５２−１２１６８０号公報には、高
速で回転する継手に接合対象物を挿入して接合する方法
が記載されている。2. Description of the Related Art As a means for connecting a thermoplastic resin tube or the like, there is known a method in which a sliding motion is applied to a joint surface of two objects to be joined, and heat is rapidly applied by friction to perform fusion joining. For example, Japanese Patent Application Laid-Open No. 52-121680 describes a method of inserting a joining object into a joint that rotates at a high speed and joining the joints.

【０００３】[0003]

【発明が解決しようとする課題】しかし、本発明者等の
検討によれば、この方法は、回転している状態の継手に
接合対象物を挿入させるために、摩耗した樹脂粉や溶融
した樹脂が管路内面にはみ出して流路抵抗を増大させる
ので、管機能を著しく低下させ、また接合部強度につい
ても、架橋管の規格であるＪＩＳ Ｋ ６７８７におけ
る高温（95℃）熱間内圧クリープ試験では溶着部から漏
水する等の問題点を有し、更に改善を要請されるもので
あることが、判明した。本発明は、上記従来の熱可塑性
樹脂管等の溶融接合方法について、本発明者等が知見し
た問題点に鑑みて、高圧用途にも使用できる高強度の接
合体を得ることの出来る熱可塑性樹脂管状体の接合方法
を提供することを目的とする。However, according to the study of the present inventors, this method is intended to insert the object to be joined into the rotating joint, so that the worn resin powder or the molten resin is used. , Which protrudes into the inner surface of the pipe and increases the flow resistance, so that the pipe function is remarkably reduced. In addition, the strength of the joint is determined by a high temperature (95 ° C) hot internal pressure creep test in JIS K 6787, which is a standard for a crosslinked pipe. It has been found that there is a problem that water leaks from the welded portion, and further improvement is required. The present invention relates to the above-mentioned conventional method of fusion joining thermoplastic pipes and the like, in view of the problems discovered by the present inventors, a thermoplastic resin capable of obtaining a high-strength joined body that can be used for high-pressure applications. An object of the present invention is to provide a method for joining tubular bodies.

【０００４】[0004]

【課題を解決するための手段】上記目的を達成するため
に、請求項１記載の発明（以下、「本発明１」という）
は、熱可塑性樹脂よりなる管状の端部を有する接合対象
物Ａと熱可塑性樹脂よりなる管状の端部を有する少なく
とも１つの接合対象物Ｂを摺動融着により接合する方法
において、端部から内側へ内径が減少するテーパー部を
有する接合対象物Ａの内側に接合対象物Ｂを挿入する第
１工程と、次いで、接合対象物の少なくとも一方を摺動
させつつ、接合対象物Ａへの挿入方向の力を接合対象物
Ｂに与える第２工程を備えた熱可塑性樹脂管状体の接合
方法を提供する。Means for Solving the Problems In order to achieve the above object, the invention according to claim 1 (hereinafter referred to as "the present invention 1").
Is a method of joining the joining object A having a tubular end portion made of a thermoplastic resin and at least one joining object B having a tubular end portion made of a thermoplastic resin by sliding fusion, from the end portion. A first step of inserting the joining object B inside the joining object A having the tapered portion whose inner diameter decreases inward, and then inserting the joining object A into the joining object A while sliding at least one of the joining objects A method for joining a thermoplastic resin tubular body, comprising a second step of applying a directional force to an object to be joined B.

【０００５】また、請求項２記載の発明（以下、「本発
明２」という）は、請求項１において、摺動停止に要す
る時間が５秒以内である熱可塑性樹脂管状体の接合方法
を提供する。また、請求項３記載の発明（以下、「本発
明３」という）は、請求項１又は２において、摺動手段
が回転である熱可塑性樹脂管状体の接合方法を提供す
る。以下、本発明を更に詳細に説明する。尚、本発明１
〜３に共通する事項は、単に本発明と表記するものとす
る。According to a second aspect of the present invention (hereinafter referred to as "the present invention 2"), there is provided a method of joining a thermoplastic resin tubular body according to the first aspect, wherein the time required for stopping the sliding is within 5 seconds. I do. The invention according to claim 3 (hereinafter referred to as “the present invention 3”) provides a method for joining a thermoplastic resin tubular body according to claim 1 or 2, wherein the sliding means is rotating. Hereinafter, the present invention will be described in more detail. The present invention 1
Items common to the items 3 to 3 are simply referred to as the present invention.

【０００６】本発明において、上記熱可塑性樹脂として
は特に限定されず、例えば、中密度ポリエチレン、高密
度ポリエチレン、ポリプロピレン、ポリブテン、ポリ塩
化ビニル、ポリフェニレンスルフィド等が挙げられる。
また上記熱可塑性樹脂は、架橋ポリエチレン、架橋ポリ
プロピレン等の架橋性樹脂であっても良く、この場合の
架橋手段は水架橋、電子線架橋、パーオキサイド等の架
橋剤による架橋等、方法は特に問わない。In the present invention, the thermoplastic resin is not particularly limited, and examples thereof include medium-density polyethylene, high-density polyethylene, polypropylene, polybutene, polyvinyl chloride, and polyphenylene sulfide.
The thermoplastic resin may be a cross-linkable resin such as cross-linked polyethylene or cross-linked polypropylene. In this case, the method of cross-linking is not particularly limited, such as water cross-linking, electron beam cross-linking, and cross-linking with a cross-linking agent such as peroxide. Absent.

【０００７】本発明において、上記摺動融着させる手段
としては、摺動により接合面及びその近傍の熱可塑性樹
脂を摩擦熱によって溶融させるだけでなく、摺動により
接合面及びその近傍の熱可塑性樹脂に対して剪断力が働
くように作用する手段が好ましく、具体的には、継手軸
を中心にして継手を回転させる方法や、継手軸方向、も
しくは継手軸方向を中心とした正転・逆転方向、又はそ
れらの組み合わせ方向へ振動させる方法が挙げられ、回
転がより好ましい。In the present invention, the means for sliding and fusing include not only melting the thermoplastic resin at the joint surface and its vicinity by sliding but also the thermoplastic resin at the joint surface and its vicinity by sliding. Means that acts so that a shear force acts on the resin is preferable. Specifically, a method of rotating the joint around the joint axis, the joint axial direction, or forward and reverse rotation around the joint axial direction A method of vibrating in a direction or a combination thereof may be mentioned, and rotation is more preferable.

【０００８】本発明において、上記接合対象物Ａとは、
熱可塑性樹脂よりなるソケット等の継手もしくは一方の
端が拡径されている管を意味し、接合対象物Ｂとは熱可
塑性樹脂よりなる管、エルボ、チーズ、レジューサー
（インクリーザー）等の配管部材を意味する。In the present invention, the object A to be joined is
A joint such as a socket made of a thermoplastic resin or a pipe whose one end is expanded in diameter means a pipe B made of a thermoplastic resin, a pipe such as an elbow, a cheese, a reducer (increaser) or the like. Means a member.

【０００９】本発明における接合は、後に図に示して説
明する如く、継手等の接合対象物Ａの内側に他の接合対
象物Ｂを挿入した形態の狭義の接合を指す。ここで接合
対象物Ｂに接合対象物Ａへの挿入方向の力を与える際
は、一定力でもよいし、力が減少してゆく方向で多段も
しくは連続的に制御されていても良い。本発明において
用いられる継手の製造方法は特に限定されないが、形状
面で問題がなければ、成形コストの面から射出成形方法
に依るのが良い。The joining in the present invention refers to joining in a narrow sense in which another joining object B is inserted inside a joining object A such as a joint, as will be described later with reference to the drawings. Here, when a force in the direction of insertion into the joining object A is applied to the joining object B, a constant force may be applied, or multi-stage or continuous control may be performed in a direction in which the force decreases. The method for manufacturing the joint used in the present invention is not particularly limited, but if there is no problem in shape, it is better to use the injection molding method from the viewpoint of molding cost.

【００１０】[0010]

【発明の実施の形態】以下に、本発明の実施の形態を、
図面を参照しつつ詳しく説明する。本発明における接合
対象物Ａ、Ｂの接合の形態としては、図１に示すよう
に、接合対象物Ａである継手（もしくは一方の端が拡径
している管）Ｓの内部に他の接合対象物Ｂである管（あ
るいは継手）Ｐの端部を挿入した形態の接合、図２に示
すように、ソケット状の継手Ｓの両側に管Ｐを挿入した
形態の接合、図３に示すように、継手Ｓの一端に管Ｐを
他端にエルボＥを挿入した形態の接合、図４に示すよう
に、継手Ｓの一端に管Ｐを他端にチーズＴｓの一つの口
を挿入した形態の接合、図５に示すように、継手Ｓの一
端に管Ｐを、他端にレジューサＲの小径側を挿入すると
ともに、レジューサＲの大径側を大径の継手Ｓの一端に
挿入し、大径の継手Ｓの他端に大径の管Ｐ´を挿入した
形態の接合等が挙げられる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described in detail with reference to the drawings. As shown in FIG. 1, as a form of joining the joining objects A and B in the present invention, another joining is performed inside a joint (or a pipe whose one end is enlarged in diameter) S which is the joining object A. As shown in FIG. 2, a joint in a form in which the end of a pipe (or joint) P which is the object B is inserted, as shown in FIG. 2, a joint in which a pipe P is inserted into both sides of a socket-like joint S, as shown in FIG. 4, a pipe P is inserted at one end of the joint S and an elbow E is inserted at the other end, and a pipe P is inserted at one end of the joint S and one mouth of the cheese Ts is inserted at the other end as shown in FIG. As shown in FIG. 5, the pipe P is inserted into one end of the joint S, the small diameter side of the reducer R is inserted into the other end, and the large diameter side of the reducer R is inserted into one end of the large diameter joint S, Joining in a form in which a large-diameter pipe P ′ is inserted into the other end of the large-diameter joint S is exemplified.

【００１１】図６は、本発明の熱可塑性樹脂管状体の接
合方法を実施するのに用いる接合装置の１例を表わす正
面図である。FIG. 6 is a front view showing an example of a joining apparatus used to carry out the joining method of a thermoplastic resin tubular body of the present invention.

【００１２】この接合装置１は、管２をそれぞれ把持
し、リンク１６，１６で接続された２つのクランプ１１
ａ，１１ｂと、ソケットタイプの継手３を把持した状態
で回転自在な継手回転治具１２と、タイミングベルト１
３を介して継手回転治具１２を回転させるモータ１４
と、一方のクランプ１１ａに接続され、このクランプ１
１ａを継手回転治具１２の方向へ進退させるとともに、
リンク１６，１６を介してクランプ１１ｂも継手回転治
具１２の方向へ進退させるようになっているエアーシリ
ンダ１５とを備えている。The joining apparatus 1 holds two pipes 2 and two clamps 11 connected by links 16, 16.
a, 11b, a joint rotating jig 12 rotatable while holding the socket type joint 3, and a timing belt 1
A motor 14 for rotating the joint rotating jig 12 via
And one of the clamps 11a.
1a is moved back and forth in the direction of the joint rotating jig 12,
The clamp 11b is also provided with an air cylinder 15 adapted to move forward and backward in the direction of the joint rotating jig 12 via the links 16,16.

【００１３】そして、この接合装置１は、まず、接合対
象物Ａである継手３を継手回転治具１２に把持させると
ともに、クランプ１１ａ，１１ｂにそれぞれ、熱可塑性
樹脂製接合対象物Ｂとしての管２を把持させる。つぎ
に、エアーシリンダ１５を作動させてクランプ１１ａ，
１１ｂを継手回転治具１２方向に移動させて、図１に示
すように、継手３の内側に、両側から管２，２を挿入し
始めて継手中央突出部に接するまで挿入する。その後、
モータ１４を駆動させて継手回転治具１２とともに、継
手３を回転させ、その間、管２に継手３への挿入方向
（管軸に平行）の力を加えて、管２が抜け出るのを保持
するのである。 （作用）本発明者等の検討によれば、従来の溶融接合方
法では、以下の理由により接合体に高強度が出なかっ
た。熱可塑性樹脂管状体の摺動による摩擦接合を行う場
合、接合面にある一定以上の力を与えなければクーロン
摩擦力が作用しない。摺動初期に管・継手は温度上昇
（軟化）しながら、この面圧力により互いに摩耗粉を生
じながら樹脂が溶融して行く。しかし、図９に示すよう
に、継手Ｓを回転させた状態で管Ｐを挿入するために、
摩耗した樹脂や溶融した樹脂２０が発生しても、図１０
に示すようにこれらの樹脂２０を掻き出しながら接合対
象物である継手Ｓが回転するので、管路内面へ樹脂２０
が多量に漏れ出してしまっていた。In the joining apparatus 1, first, the joint 3 as the joining object A is gripped by the joint rotating jig 12, and the clamps 11a and 11b are respectively connected to the pipes as the joining objects B made of thermoplastic resin. 2 is gripped. Next, the air cylinder 15 is operated to operate the clamps 11a,
11b is moved in the direction of the joint rotating jig 12, and as shown in FIG. 1, the pipes 2 and 2 are inserted into the joint 3 from both sides until it comes into contact with the joint central protrusion. afterwards,
The motor 14 is driven to rotate the joint 3 together with the joint rotating jig 12, and during this time, a force is applied to the tube 2 in the direction of insertion into the joint 3 (parallel to the tube axis) to keep the tube 2 coming out. It is. (Action) According to the study of the present inventors, high strength was not obtained in the joined body by the conventional fusion joining method for the following reasons. In the case of performing friction joining by sliding the thermoplastic resin tubular body, Coulomb friction force does not act unless a certain force or more is applied to the joining surface. In the initial stage of sliding, the temperature of the pipe / joint rises (softens), and the resin melts while generating wear powder due to the surface pressure. However, as shown in FIG. 9, in order to insert the pipe P with the joint S rotated,
Even if a worn resin or a molten resin 20 is generated, FIG.
As shown in FIG. 5, the joint S, which is the object to be joined, is rotated while scraping out the resin 20, so that the resin 20
Had leaked out in large quantities.

【００１４】一方、接合部には溶融樹脂があるものの量
が少なく密度が低いために、溶融樹脂の冷却時の体積収
縮を補えずに接合面で剥離してしまい接合体の接合強度
が出なかったのである。On the other hand, since the amount of the molten resin in the joining portion is small and the density is low, the molten resin is separated at the joining surface without compensating for volume shrinkage upon cooling, and the joining strength of the joined body is not obtained. It was.

【００１５】これに対して、本発明においては、継手等
の接合対象物Ａの摺動前にその内側（かつ矢印方向）へ
接合対象物Ｂを挿入するので、摩耗樹脂粉や溶融樹脂の
内面への漏れ出しを防ぐことができる。また接合対象物
Ａ，Ｂは互いにある程度の変形を伴って挿入が行われる
ので、接合対象物Ｂには拡径方向に接合対象物Ａには縮
径方向に残留応力が残る。この応力によって接合面には
互いに押しつける力が働き、回転初期に互いに樹脂の摩
耗が生じても接合部は接触面積を増加させながら常に密
着している。On the other hand, in the present invention, since the object B to be joined is inserted into the inside (and in the direction of the arrow) of the object A such as a joint before sliding, the inner surface of the wear resin powder or the molten resin is inserted. Can be prevented. Further, since the joining objects A and B are inserted with a certain degree of deformation relative to each other, residual stress remains in the joining object B in the radial direction and in the joining object A in the radial direction. Due to this stress, a pressing force acts on the joining surfaces, and even if the resins are mutually abraded at the beginning of rotation, the joining portions are always in close contact with each other while increasing the contact area.

【００１６】接触面積の増加と樹脂の温度上昇により、
残留応力も小さくなって行くが、この段階では樹脂の温
度上昇によって樹脂が膨張し、これにより接合部に圧力
が発生する。この圧力で樹脂は密着し、摺動熱と伝熱に
より徐々に溶融樹脂の量が増加し、その結果、接合面で
は溶融樹脂が圧力を有し、周軸方向の隙間へ樹脂を流し
込む働きや冷却時の体積収縮を補う働きをするので、高
強度の接合状態が現出するのである。Due to the increase in the contact area and the temperature of the resin,
The residual stress also decreases, but at this stage, the resin expands due to a rise in the temperature of the resin, thereby generating pressure at the joint. At this pressure, the resin adheres and the amount of the molten resin gradually increases due to sliding heat and heat transfer. As a result, the molten resin has a pressure on the joint surface, and the resin flows into the gap in the circumferential axis direction. Since it acts to compensate for volume shrinkage during cooling, a high-strength joint state appears.

【００１７】接合対象物Ａは接合対象物Ｂの径の規格範
囲でのバラツキがあっても常に接触する様に内面をテー
パー形状としている。このテーパー形状の内側に接合対
象物Ｂを挿入するので、接合対象物Ｂを軸方向に保持し
ていないと回転に伴い接合対象物Ａから抜け出るため、
接合対象物Ｂに接合対象物Ａへの挿入方向の力を与え
て、これを防ぐ必要がある。The object A to be joined has a tapered inner surface so that the object A is always in contact even if the diameter of the object B varies within a specified range. Since the welding target B is inserted inside the tapered shape, if the welding target B is not held in the axial direction, it comes out of the welding target A with the rotation,
It is necessary to apply a force in the insertion direction to the joining object A to the joining object B to prevent this.

【００１８】第１工程で接合に必要な長さ分、接合対象
物を挿入していることが望ましいが、継手と接合対象物
の接触圧が高い、すなわち摩擦抵抗が大きいと大きなト
ルクを必要とするので、大半（７割以上）の挿入が第１
工程で行われ、残りの長さの挿入が第２工程での圧力で
行われても構わない。７割以上の挿入が行われていれば
内面への樹脂漏れや強度において大きな問題とはならな
いからである。以上により、本発明の熱可塑性樹脂管状
体の接合方法によれば、従来のように、継手の構造を複
雑化する必要、あるいは、接合面に接着層を積層するよ
うな必要がないので、結局、低コストにて管状体の接合
が可能となる。It is desirable that the object to be joined is inserted by a length necessary for joining in the first step. However, if the contact pressure between the joint and the object to be joined is high, that is, if the frictional resistance is large, a large torque is required. Therefore, most (more than 70%) insertions are the first
It may be performed in a step, and the insertion of the remaining length may be performed at the pressure in the second step. This is because if 70% or more of the insertion is performed, there is no major problem in resin leakage or strength into the inner surface. As described above, according to the method for joining a thermoplastic resin tubular body of the present invention, unlike the related art, there is no need to complicate the structure of the joint or to laminate an adhesive layer on the joint surface. It is possible to join the tubular bodies at low cost.

【００１９】一方、力の大きさは継手の形状や管の口径
により異なるので、検討が必要である。又、その力は一
定力でも構わないが、抜け出ようとする力は溶融と共に
減少してゆくので、多段もしくは連続的に力が減少され
るよう制御されていても構わない。On the other hand, the magnitude of the force differs depending on the shape of the joint and the diameter of the pipe, and therefore needs to be studied. Further, the force may be a constant force, but since the force that tries to escape decreases with melting, the force may be controlled to be reduced in multiple stages or continuously.

【００２０】又、本発明においては、摺動停止後に、摺
動摩擦により発生した熱で接合対象物同士の分子の相互
進入が行われる。摺動停止中は分子の相互進入が行われ
ず、また接合面に与えるエネルギは減少し、接合面の温
度は低下し始める。よって摺動停止に要する時間は、本
発明２の如く５秒以内であることが好ましい。５秒以上
かかる場合は、分子の相互進入が不十分となり強度の低
下を招くからであり、更に好ましい停止に要する時間は
２秒以内である。Further, in the present invention, after the sliding is stopped, the molecules of the objects to be joined mutually enter by the heat generated by the sliding friction. While the sliding is stopped, molecules do not enter each other, the energy applied to the joint surface decreases, and the temperature of the joint surface starts to decrease. Therefore, the time required for stopping the sliding is preferably within 5 seconds as in the second aspect of the invention. When it takes 5 seconds or more, the mutual intrusion of the molecules becomes insufficient and the strength is reduced, and the time required for the stoppage is more preferably 2 seconds or less.

【００２１】[0021]

【実施例】本発明を実施例をもってさらに詳しく説明す
る。 （実施例１）熱可塑性樹脂管である高密度ポリエチレン
パイプ（積水化学工業社製、エスロハイパー呼び径１０
０Ａ：外径114 ±0.35mm、肉厚10.4mm）と、同樹脂より
なり、各部の寸法が図７に示すような継手（ソケット、
Ｌ1 ＝１４０ｍｍ）とを図６の接合装置１にセットし、
上述の通りの手順で接合を行った。まず、１５０kgの力
にて管を両側から継手に挿入し始めて継手中央突出部に
接するまで挿入した。その後、継手を回転数400rpmにて
20秒間回転させ、その間、管に継手への挿入方向（管軸
に平行）の力（30kg）で管が抜け出るのを保持した。EXAMPLES The present invention will be described in more detail with reference to Examples. (Example 1) A high-density polyethylene pipe as a thermoplastic resin pipe (Eslohyper nominal diameter 10 manufactured by Sekisui Chemical Co., Ltd.)
0A: Outer diameter 114 ± 0.35mm, wall thickness 10.4mm), made of the same resin, and the dimensions of each part are as shown in FIG.
L1 = 140 mm) in the joining apparatus 1 shown in FIG.
Joining was performed as described above. First, the tube was inserted into the joint from both sides with a force of 150 kg, and was inserted until it came into contact with the central protrusion of the joint. After that, rotate the joint at 400 rpm
The tube was rotated for 20 seconds, during which time the tube was held out of force (30 kg) in the direction of insertion into the joint (parallel to the tube axis).

【００２２】回転停止に要した時間は７秒であった。継
手の軸を通る平面で切断し接合部内面を観察すると、管
路内面への溶融樹脂の漏れ出しは高さ５ｍｍ程度であっ
た。また熱間内圧クリープ試験（JIS K 6774 附属書
１）を行ったところ、内圧１１．２kg/cm2にて１０００
時間後も漏れ等の異常はなく、その後５％程度は接合部
から破壊した。回転停止に要した時間、熱間内圧クリー
プ試験結果等を、以下の実施例、比較例と共に表１に示
した。The time required for stopping the rotation was 7 seconds. When cut along a plane passing through the joint axis and observing the inner surface of the joint, leakage of the molten resin to the inner surface of the conduit was about 5 mm in height. When a hot internal pressure creep test (JIS K 6774 Annex 1) was performed, the internal pressure was set to 1000 kg at an internal pressure of 11.2 kg / cm2.
After the time, there was no abnormality such as leakage, and then about 5% was broken from the joint. Table 1 shows the time required for stopping the rotation, the results of the hot internal pressure creep test, and the like, together with the following examples and comparative examples.

【００２３】（実施例２）実施例１と同様の継手及びパ
イプを用い、同様にして接合を行った。但し、回転停止
に要した時間は２秒であった。継手の軸を通る平面で切
断し接合部内面を観察すると、管路内面への溶融樹脂の
漏れ出しは高さ５ｍｍ程度であった。また、熱間内圧ク
リープ試験（JIS K 6774 附属書１）を行ったところ内
圧１１．２kg/cm2にて1000時間後も漏れ等の異常はな
く、その後は全て接合部ではなく管から破壊した。(Example 2) Using the same joints and pipes as in Example 1, joining was performed in the same manner. However, the time required for stopping the rotation was 2 seconds. When cut along a plane passing through the joint axis and observing the inner surface of the joint, leakage of the molten resin to the inner surface of the conduit was about 5 mm in height. In addition, when a hot internal pressure creep test (JIS K 6774, Annex 1) was performed, there was no abnormality such as leakage even after 1000 hours at an internal pressure of 11.2 kg / cm2, and thereafter, the pipe was broken not at the joint but at all.

【００２４】（実施例３）熱可塑性架橋樹脂管である架
橋ポリエチレンパイプ（積水化学工業社製、エスロペッ
クス呼び径１３Ａ：外径１７±0.15ｍｍ、肉厚２．１±
0.2 ｍｍ、ゲル分率７０％）と、同樹脂よりなり、各部
の寸法が図８に示す継手（架橋ポリエチレン製、ゲル分
率７０％、Ｌ2 ＝３４ｍｍ）とを図６の接合装置１にセ
ットし、上述の通りの手順で接合を行った。まず、15kg
の力で管を両側から継手に挿入し始めて継手中央突出部
に接するまで挿入した。その後、継手を回転数５００ｒ
ｐｍで３秒間回転させた後、１０００ｒｐｍで５秒間回
転させた。回転中は管に継手への挿入方向（管軸に平
行）の力（６kg）を加えて管が抜け出るのを保持しなが
ら、回転を停止させた。(Example 3) A crosslinked polyethylene pipe which is a thermoplastic crosslinked resin pipe (Sekisui Chemical Co., Ltd., Eslopex nominal diameter 13A: outer diameter 17 ± 0.15 mm, wall thickness 2.1 ±)
A joint (made of crosslinked polyethylene, gel fraction 70%, L2 = 34 mm) made of the same resin and having the dimensions of each part shown in FIG. 8 is set in the joining apparatus 1 shown in FIG. Then, bonding was performed in the procedure described above. First, 15kg
The tube was inserted into the joint from both sides with the force described above until the tube came into contact with the central protrusion of the joint. Then, rotate the joint at 500 r.
After rotating for 3 seconds at pm, it was rotated for 5 seconds at 1000 rpm. During rotation, the rotation was stopped while applying a force (6 kg) to the pipe in the direction of insertion into the joint (parallel to the pipe axis) to keep the pipe from coming out.

【００２５】回転停止に要した時間は７秒であった。継
手の軸を通る平面で切断し接合部内面を観察すると、管
路内面への溶融樹脂の漏れ出しは高さ１ｍｍ程度であっ
た。また熱間内圧クリープ試験（JIS K 6788 附属書
１）を行ったところ、内圧１２．６kg/cm2にて１０００
時間後も漏れ等の異常はなく、その後７％程度は接合部
から破壊した。The time required for stopping the rotation was 7 seconds. When cut along a plane passing through the joint axis and observing the inner surface of the joint, the leakage of the molten resin to the inner surface of the pipe was about 1 mm in height. When a hot internal pressure creep test (JIS K 6788 Annex 1) was carried out, the internal pressure was 12.6 kg / cm2 and the internal pressure was 1000
After the time, there was no abnormality such as leakage, and then about 7% was broken from the joint.

【００２６】（実施例４）実施例３と同様の継手及びパ
イプを用い、同様にして接合を行った。但し、回転停止
に要した時間は２秒であった。継手の軸を通る平面で切
断し接合部内面を観察すると、管路内面への溶融樹脂の
漏れ出しは高さ1mm 以下であった。また、熱間内圧クリ
ープ試験（JIS K 6788）を行ったところ、内圧１２．６
kg/cm2で１０００時間後も漏れ等の異常はなく、その後
は全て接合部ではなく管から破壊した。(Example 4) Using the same joints and pipes as in Example 3, joining was performed in the same manner. However, the time required for stopping the rotation was 2 seconds. When cut along a plane passing through the joint axis and observing the inner surface of the joint, leakage of the molten resin to the inner surface of the pipeline was 1 mm or less in height. When a hot internal pressure creep test (JIS K 6788) was performed, the internal pressure was 12.6.
After 1000 hours at kg / cm2, there were no abnormalities such as leaks, and thereafter, all were broken not from the joint but from the pipe.

【００２７】（比較例１）実施例３と同様の管及び継手
を実施例１で用いた装置にセットし、以下の接合条件に
て接合を行った。継手を１５００ｒｐｍで回転させ、そ
の状態で継手内に管を両側から１０kgの力で挿入し、継
手中央突出部に接すると同時に管に与える力を６kgとし
た。管と継手が接触してから２０秒後に回転を停止させ
た。回転停止に要した時間は７秒であった。継手の軸を
通る平面で切断し接合部内面を観察すると、管路内面へ
の溶融樹脂の漏れ出しは高さ５ｍｍ程度あり、流路抵抗
となっていた。また熱間内圧クリープ試験（JIS K 678
8）を行ったところ内圧１２．６kg/cm2ので２００時間
後接合部から漏水した。(Comparative Example 1) The same pipes and joints as in Example 3 were set in the apparatus used in Example 1, and were joined under the following joining conditions. The joint was rotated at 1500 rpm, and in this state, a pipe was inserted into the joint from both sides with a force of 10 kg, and the force applied to the pipe at the same time as coming into contact with the joint central protrusion was 6 kg. Twenty seconds after the contact between the tube and the joint, the rotation was stopped. The time required to stop the rotation was 7 seconds. When cut along a plane passing through the axis of the joint and observing the inner surface of the joint, leakage of the molten resin to the inner surface of the conduit was about 5 mm in height, which was a flow path resistance. Hot internal pressure creep test (JIS K 678
8) When the internal pressure was 12.6 kg / cm2, water leaked from the joint after 200 hours.

【００２８】[0028]

【表１】 [Table 1]

【００２９】[0029]

【発明の効果】本発明の熱可塑性樹脂管状体の接合方法
は、上述の通り構成されており、端部から内側へ内径が
減少するテーパー部を有する接合対象物Ａの内側に接合
対象物Ｂを挿入する第１工程と、次いで、接合対象物の
少なくとも一方を摺動させつつ、接合対象物Ａへの挿入
方向の力を接合対象物Ｂに与える第２工程を備えている
ので、本発明によれば、摺動接合において内面に樹脂の
漏れだしが少なく、ガス用、上水道用、給水給湯用等の
高圧用途に使用可能な高強度接合部を有する接合体を得
ることが出来る。また、接合には、特に複雑・大がかり
な装置を要するわけではないので、結局、比較的低コス
トにて管状体の接合が可能となる。更に、請求項２もし
くは３のようにすれば、上記の効果をより確実に奏する
ことができ、安定した強度の高い接合部を有する接合体
を得ることが出来る。The method for joining a thermoplastic resin tubular body of the present invention is constructed as described above, and includes a joining object B inside a joining object A having a tapered portion whose inner diameter decreases from the end to the inside. The present invention is provided with a first step of inserting the first object and a second step of applying a force in the direction of insertion into the object A to be joined to the object B while sliding at least one of the objects. According to the method, it is possible to obtain a joined body having a high-strength joint which can be used for high-pressure applications such as gas, water supply, hot water supply, and the like, with less leakage of resin on the inner surface in sliding joining. In addition, the joining does not require a particularly complicated and large-scale device, and as a result, joining of the tubular body is possible at a relatively low cost. Further, according to the second or third aspect, the above-mentioned effect can be more reliably achieved, and a joined body having a stable and high-strength joint can be obtained.

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

【図１】配管材の接合状態の１例を表わす断面図であ
る。FIG. 1 is a cross-sectional view illustrating an example of a joined state of piping materials.

【図２】配管材の接合状態の他の１例を表わす断面図で
ある。FIG. 2 is a cross-sectional view illustrating another example of a joined state of piping materials.

【図３】配管材の接合状態の更に他の１例を表わす断面
図である。FIG. 3 is a cross-sectional view illustrating yet another example of a joined state of piping materials.

【図４】配管材の接合状態の更に他の１例を表わす断面
図である。FIG. 4 is a cross-sectional view illustrating yet another example of the joined state of the pipe members.

【図５】配管材の接合状態の更に他の１例を表わす断面
図である。FIG. 5 is a cross-sectional view illustrating still another example of the joined state of the pipe members.

【図６】本発明の熱可塑性樹脂管状体の接合方法に用い
て好適な接合装置の１例を表わす正面図である。FIG. 6 is a front view showing an example of a joining device suitable for use in the method for joining thermoplastic resin tubular bodies of the present invention.

【図７】実施例１に用いた継手の寸法図である。FIG. 7 is a dimensional view of a joint used in Example 1.

【図８】実施例１に用いた継手の寸法図である。FIG. 8 is a dimensional view of a joint used in Example 1.

【図９】本発明方法の作用における説明に用いた、継手
に管が挿入された状態の上半部のみを示す模式的断面図
である。FIG. 9 is a schematic cross-sectional view showing only the upper half of a state in which a pipe is inserted into a joint, used for explaining the operation of the method of the present invention.

【図１０】本発明方法の作用における説明に用いた、継
手に管が挿入された状態の上半部のみを示す他の模式的
断面図である。FIG. 10 is another schematic cross-sectional view showing only the upper half portion of the joint with the pipe inserted therein, used for explaining the operation of the method of the present invention.

【符号の説明】[Explanation of symbols]

１ 接合装置 ２ 管（接合対象部材Ｂ） ３ 継手（接合対象部材Ａ） DESCRIPTION OF SYMBOLS 1 Joining apparatus 2 Pipe (member B to be joined) 3 Joint (member A to be joined)

───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4F211 AA04 AD05 AD12 AD25 AG08 AH43 TA01 TC11 TD11 TD14 TH02 TH18 TN21  ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F211 AA04 AD05 AD12 AD25 AG08 AH43 TA01 TC11 TD11 TD14 TH02 TH18 TN21

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 熱可塑性樹脂よりなる管状の端部を有す
る接合対象物Ａと熱可塑性樹脂よりなる管状の端部を有
する少なくとも１つの接合対象物Ｂを摺動融着により接
合する方法において、端部から内側へ内径が減少するテ
ーパー部を有する接合対象物Ａの内側に接合対象物Ｂを
挿入する第１工程と、次いで、接合対象物の少なくとも
一方を摺動させつつ、接合対象物Ａへの挿入方向の力を
接合対象物Ｂに与える第２工程を備えたことを特徴とす
る熱可塑性樹脂管状体の接合方法。1. A method for joining a joining object A having a tubular end portion made of a thermoplastic resin and at least one joining object B having a tubular end portion made of a thermoplastic resin by sliding fusion, A first step of inserting the joining object B inside the joining object A having a tapered portion whose inner diameter decreases from the end to the inside, and then, while sliding at least one of the joining objects, the joining object A A second step of applying a force in a direction of insertion to the joining object B to the thermoplastic resin tubular body. 【請求項２】 請求項１において、摺動停止に要する時
間が５秒以内であることを特徴とする熱可塑性樹脂管状
体の接合方法。2. The method for joining thermoplastic resin tubular bodies according to claim 1, wherein the time required for stopping the sliding is within 5 seconds. 【請求項３】 請求項１又は２において、摺動手段が回
転であることを特徴とする熱可塑性樹脂管状体の接合方
法。3. The method according to claim 1, wherein the sliding means is rotating.
JP18762699A 1999-07-01 1999-07-01 Bonding method for thermoplastic resin tubular bodies Pending JP2001009917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18762699A JP2001009917A (en) 1999-07-01 1999-07-01 Bonding method for thermoplastic resin tubular bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18762699A JP2001009917A (en) 1999-07-01 1999-07-01 Bonding method for thermoplastic resin tubular bodies

Publications (1)

Publication Number Publication Date
JP2001009917A true JP2001009917A (en) 2001-01-16

Family

ID=16209410

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18762699A Pending JP2001009917A (en) 1999-07-01 1999-07-01 Bonding method for thermoplastic resin tubular bodies

Country Status (1)

Country Link
JP (1) JP2001009917A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002283456A (en) * 2001-03-22 2002-10-03 Sekisui Chem Co Ltd Joining structure of piping materials and method for joining piping materials
JP2008073739A (en) * 2006-09-22 2008-04-03 Inoue Shoji Kk Method for forming metal pipe, method for fitting pipe joint to pipe material, and joint method using pipe joint
JP2018176555A (en) * 2017-04-13 2018-11-15 トヨタ自動車株式会社 Method for welding thermoplastic resin

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002283456A (en) * 2001-03-22 2002-10-03 Sekisui Chem Co Ltd Joining structure of piping materials and method for joining piping materials
JP4700210B2 (en) * 2001-03-22 2011-06-15 積水化学工業株式会社 Piping material joint structure
JP2008073739A (en) * 2006-09-22 2008-04-03 Inoue Shoji Kk Method for forming metal pipe, method for fitting pipe joint to pipe material, and joint method using pipe joint
JP2018176555A (en) * 2017-04-13 2018-11-15 トヨタ自動車株式会社 Method for welding thermoplastic resin

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