JPH0885152A - Blocking method for resin tube end - Google Patents

Blocking method for resin tube end

Info

Publication number
JPH0885152A
JPH0885152A JP22122194A JP22122194A JPH0885152A JP H0885152 A JPH0885152 A JP H0885152A JP 22122194 A JP22122194 A JP 22122194A JP 22122194 A JP22122194 A JP 22122194A JP H0885152 A JPH0885152 A JP H0885152A
Authority
JP
Japan
Prior art keywords
end portion
pipe
heat
heating means
tube
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
JP22122194A
Other languages
Japanese (ja)
Inventor
Junji Ishikawa
純二 石川
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.)
Osaka Gas Co Ltd
Original Assignee
Osaka Gas 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 Osaka Gas Co Ltd filed Critical Osaka Gas Co Ltd
Priority to JP22122194A priority Critical patent/JPH0885152A/en
Publication of JPH0885152A publication Critical patent/JPH0885152A/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
    • B29C66/5223—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
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B29C65/2053—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position
    • B29C65/2061—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position by sliding
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • 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
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential 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
    • B29C66/80—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
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

PURPOSE: To economically block the end of a resin tube by heating the inner surface of the end by heating means inserted into the end, then crushing the end by an external pressure while drawing the means, and heat sealing the inner surfaces of the end. CONSTITUTION: When the end P1 of a tube P such as a gas tube etc., is blocked, a heat generator 3 containing a nichrome wire 3a as heating means H to generate heat by energizing the wire 3a is inserted into the end P1 of the tube P. Heat is generated from the generator 3 to heat the inner surface of the end P1 to the temperature which can heat seal it. Then, immediately after the means H is drawn from the end P1, a pair of rollers R1, R2 disposed on the outer periphery of the tube P are moved axially of the tube P while applying a force in the approaching direction, and the inner surfaces of the end P1 are heat sealed by crushing it by an external force.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、樹脂管端部の閉塞方法
に関し、更に詳しくは、熱可塑性樹脂よりなる管の端部
を、前記熱可塑性樹脂の熱融着を利用して閉塞する樹脂
管端部の閉塞方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for closing an end portion of a resin pipe, and more specifically, a resin for closing an end portion of a pipe made of a thermoplastic resin by utilizing heat fusion of the thermoplastic resin. The present invention relates to a method of closing a pipe end.

【０００２】[0002]

【従来の技術】熱可塑性樹脂よりなる管Ｐの端部Ｐ１
を、前記熱可塑性樹脂の熱融着を利用して閉塞する場合
は、従来、図３に示すように、前記管Ｐの端部Ｐ１に、
前記管Ｐと同材質で前記管Ｐへの熱融着が可能なキャッ
プ１を外嵌した上で、そのキャップ１の内周面と前記端
部Ｐ１と外周面との間に熱融着部を形成することによ
り、前記管Ｐの端部Ｐ１を閉塞する、という方法（以
下、従来方法という）が採用されていた。2. Description of the Related Art An end portion P1 of a pipe P made of a thermoplastic resin
In the case of closing by utilizing heat fusion of the thermoplastic resin, conventionally, as shown in FIG. 3, at the end P1 of the pipe P,
A cap 1 made of the same material as the pipe P and capable of being heat-sealed to the pipe P is externally fitted, and a heat-sealing portion is provided between the inner peripheral surface of the cap 1 and the end P1 and the outer peripheral surface. A method of closing the end P1 of the pipe P by forming the above (hereinafter referred to as a conventional method) has been adopted.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、上述の
従来方法で閉塞された管端部においては、その閉塞のた
めに特に準備された前記キャップ１が、前記熱融着によ
って、もはや取り外せない状態となっているので、使い
捨ての部品となってしまう上、上述の従来方法で閉塞さ
れた管端部を、例えば、配管の先継ぎ等の目的で再使用
する場合には、前記管Ｐの端部Ｐ１における前記キャッ
プ１の装着部及びその隣接部を、図４（イ）に示すよう
に切断・除去した上で、その残存端部に対し、図４
（ロ）に示すように、エルボ２等の継手を装着して前記
先継ぎ等のための配管工事が行われるので、前記管Ｐの
端部Ｐ１における切断・除去部分の長さも長くなってし
まう、という問題があった。本発明は、このような実情
に着目してなされたものであり、上述した従来方法にお
ける問題を解消し得る手段を提供することを目的として
いる。However, in the case of a tube end closed by the above-mentioned conventional method, the cap 1, which is specially prepared for the closing, cannot be removed by the heat fusion. Therefore, when the pipe end closed by the above-mentioned conventional method is reused for the purpose of, for example, a pipe joint, the end of the pipe P becomes a disposable component. The mounting portion of the cap 1 on P1 and its adjacent portion are cut and removed as shown in FIG.
As shown in (b), since the piping work for the pre-joint and the like is performed by mounting the joint such as the elbow 2, the length of the cut / removed portion at the end P1 of the pipe P also becomes long. , There was a problem. The present invention has been made by paying attention to such an actual situation, and an object thereof is to provide means capable of solving the above-mentioned problems in the conventional method.

【０００４】[0004]

【課題を解決するための手段】本発明に係る樹脂管端部
の閉塞方法（以下、本発明方法という）は、熱可塑性樹
脂よりなる管の端部を、前記熱可塑性樹脂の熱融着を利
用して閉塞する樹脂管端部の閉塞方法であって、前記管
の端部内へ加熱手段を挿入し、その加熱手段にて前記端
部の内面を前記熱融着が可能な温度まで加熱した上で、
前記加熱手段を前記端部内から引き出しつつ、又は引き
出した直後に、前記端部を外圧にて押し潰すことによ
り、前記端部の内面同士を熱融着させる点に特徴を有し
ている。A method for closing an end portion of a resin pipe according to the present invention (hereinafter, referred to as a method of the present invention) is a method in which an end portion of a pipe made of a thermoplastic resin is heat-sealed with the thermoplastic resin. A method of closing an end portion of a resin pipe which is closed by utilizing a heating means inserted into an end portion of the pipe, and the heating means heats an inner surface of the end portion to a temperature at which the heat fusion is possible. Above,
It is characterized in that the inner surfaces of the end portions are heat-sealed by crushing the end portions with external pressure while pulling out the heating means from the inside of the end portions or immediately after pulling out the heating means.

【０００５】[0005]

【作用】上記特徴を備えた本発明方法によれば、前記管
の端部内へ挿入された加熱手段にて、前記端部の内面が
前記温度まで加熱された後、前記加熱手段が前記端部内
から引き出されつつ、又は引き出された直後に、前記端
部が外圧にて押し潰されて、前記端部の内面同士が熱融
着されるので、従来方法では必要であった使い捨ての部
品（具体的には、図３、図４に示したキャップ１等の使
い捨て部品）を使用することなく、前記端部の閉塞を行
うことができ、しかも、前記端部の押し潰し部分だけで
前記閉塞部が構成されるので、その閉塞部の長さをでき
るだけ短くしつつ、前記端部の閉塞を行うことができ
る。According to the method of the present invention having the above characteristics, the heating means inserted into the end portion of the pipe heats the inner surface of the end portion to the temperature, and then the heating means moves inside the end portion. While being pulled out from or immediately after being pulled out, the end portions are crushed by an external pressure, and the inner surfaces of the end portions are heat-sealed together, so that the disposable parts required in the conventional method (specifically, Specifically, the end portion can be closed without using a disposable component such as the cap 1 shown in FIGS. 3 and 4, and the closed portion can be formed only by the crushed portion of the end portion. Thus, the end portion can be closed while the length of the closed portion is made as short as possible.

【０００６】[0006]

【発明の効果】従って、本発明方法によれば、後に使い
捨てとなる部品を使用することなく、前記端部の閉塞を
行うことができ、しかも、本発明方法で閉塞された管端
部を、例えば、配管の先継ぎ等の目的で再使用する場合
に、前記管端部における切断・除去部分の長さをできる
だけ短くすることができるので、従来方法よりも経済的
に、前記端部の閉塞を行うことができるようになる。As described above, according to the method of the present invention, it is possible to close the end portion without using a part which will be used later, and moreover, the pipe end portion closed by the method of the present invention is For example, when the pipe is reused for the purpose of pipe splicing, etc., the length of the cut / removed portion at the pipe end can be made as short as possible, so that the closing of the end is more economical than the conventional method. Will be able to do.

【０００７】尚、上記本発明方法において、前記端部を
挟み込み自在な位置に設けた一対のローラーに対し、相
互接近方向への力を付与しつつ、前記ローラーを前記管
の軸方向へ移動させることにより、前記端部を押し潰す
外圧を得るようにすれば、前記管の端部が外圧にて押し
潰されて、前記端部の内面同士が熱融着される現象が前
記管の軸方向へ徐々に進行して確実に行われるようにな
り、もって、前記管端部の閉塞が一層確実に行われるよ
うになる。In the above-mentioned method of the present invention, the rollers are moved in the axial direction of the pipe while applying a force in the direction of mutual approach to the pair of rollers provided at positions where the end portions can be sandwiched. Thus, if an external pressure for crushing the end portion is obtained, the phenomenon that the end portion of the pipe is crushed by the external pressure and the inner surfaces of the end portions are heat-sealed is the axial direction of the pipe. Then, the tube end portion is blocked more reliably.

【０００８】[0008]

【実施例】以下、本発明の実施例を図面に基づいて説明
する。尚、図面において従来例と同一の符号で表示した
部分は同一又は相当の部分を示している。Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the portions denoted by the same reference numerals as the conventional example indicate the same or corresponding portions.

【０００９】図１には、本発明方法の一実施例が示され
ており、図中のＰは、前記管の一例としてのガス管（更
に詳しくは、熱可塑性樹脂の一例としてのポリエチレン
よりなるガス管）であり、その管Ｐの端部Ｐ１を閉塞す
るのに、前記熱可塑性樹脂の熱融着を利用した本発明方
法が実施される。FIG. 1 shows an embodiment of the method of the present invention, in which P is a gas pipe as an example of the pipe (more specifically, polyethylene as an example of a thermoplastic resin). A gas pipe), and the method of the present invention utilizing thermal fusion of the thermoplastic resin is carried out to close the end P1 of the pipe P.

【００１０】その本発明方法について、以下に、順を追
って説明する。先ず、図１（イ）に示すように、前記管
Ｐの端部Ｐ１内へ、加熱手段Ｈ（その加熱手段Ｈは、具
体的には、ニクロム線３ａを内蔵し、そのニクロム線３
ａへの通電によって発熱する発熱体３にて構成されてい
る）を挿入する。そして、前記加熱手段Ｈとしての発熱
体３内のニクロム線３ａへの通電を行って、前記発熱体
３を発熱させ、その熱を利用して前記端部Ｐ１の内面を
前記熱融着が可能な温度まで加熱する。そして、前記加
熱手段Ｈを、図１（ロ）に示すように、前記端部Ｐ１内
から引き出した直後に、図１（ハ）に示すように、前記
管Ｐの端部Ｐ１を外圧にて押し潰すことにより、前記端
部Ｐ１の内面同士を熱融着させる。ところで、前記管Ｐ
の端部Ｐ１を押し潰す外圧は、前記端部Ｐ１を挟み込み
自在な位置に設けた一対のローラーＲ１，Ｒ２に対し、
相互接近方向への力を付与しつつ、前記ローラーＲ１，
Ｒ２を前記管Ｐ１の軸方向へ移動させることにより得る
こととする。The method of the present invention will be described below step by step. First, as shown in FIG. 1 (a), a heating means H (specifically, the heating means H has a nichrome wire 3a built therein, and the nichrome wire 3 is provided inside the end portion P1 of the pipe P.
(It is composed of a heating element 3 which generates heat by energizing a). Then, the nichrome wire 3a in the heating element 3 serving as the heating means H is energized to generate heat in the heating element 3, and the heat can be used to perform the thermal fusion of the inner surface of the end P1. Heat to a suitable temperature. Immediately after pulling out the heating means H from the inside of the end portion P1 as shown in FIG. 1B, the end portion P1 of the pipe P is exposed to external pressure as shown in FIG. 1C. By crushing, the inner surfaces of the end P1 are heat-sealed to each other. By the way, the pipe P
The external pressure for crushing the end P1 of the roller is applied to the pair of rollers R1 and R2 provided at positions where the end P1 can be sandwiched.
While applying force in the direction of mutual approach, the rollers R1,
It is obtained by moving R2 in the axial direction of the pipe P1.

【００１１】このような本発明方法によれば、管Ｐの端
部Ｐ１内へ挿入された加熱手段Ｈにて、前記端部Ｐ１の
内面が前記温度まで加熱された後、前記加熱手段Ｈが前
記端部Ｐ１内から引き出された直後に、前記端部Ｐ１が
前記外圧にて押し潰されて、前記端部１の内面同士が熱
融着されるので、従来方法で必要であった前記キャップ
１（図３、図４参照）等の使い捨て部品を使用すること
なく、前記端部１の閉塞を行うことができる。また、前
記管Ｐの端部１の内面同士が熱融着される現象が、前記
ローラーＲ１，Ｒ２の前記軸方向への移動に基づいて、
前記軸方向へ徐々に進行して確実に行われるので、前記
管Ｐの端部１の閉塞が確実に行われるようになる。しか
も、前記管Ｐの端部Ｐ１の押し潰し部分だけで前記閉塞
部が構成されるので、その閉塞部の長さをできるだけ短
くしつつ、前記管Ｐの端部Ｐ１の閉塞を行うことができ
る。According to such a method of the present invention, the heating means H inserted into the end portion P1 of the pipe P heats the inner surface of the end portion P1 to the temperature and then the heating means H Immediately after being pulled out from the inside of the end portion P1, the end portion P1 is crushed by the external pressure and the inner surfaces of the end portion 1 are heat-sealed to each other. The end portion 1 can be closed without using disposable parts such as 1 (see FIGS. 3 and 4). Further, the phenomenon that the inner surfaces of the ends 1 of the pipes P are heat-sealed to each other is based on the movement of the rollers R1 and R2 in the axial direction.
Since it progresses gradually in the axial direction and is surely performed, the end portion 1 of the pipe P is surely closed. Moreover, since the closing portion is formed only by the crushed portion of the end portion P1 of the pipe P, the end portion P1 of the pipe P can be closed while the length of the closing portion is made as short as possible. .

【００１２】次に、別実施例について説明する。上述の
実施例では、前記管Ｐの端部１の内面同士を熱融着する
のに、前記加熱手段Ｈを前記端部Ｐ１内から引き出した
直後に、前記端部Ｐ１が前記外圧にて押し潰すようにし
ていたが、前記加熱手段Ｈを前記端部Ｐ１内から引き出
しつつ、前記端部Ｐ１を前記外圧にて押し潰すようにし
てもよい。また、上述の実施例では、前記管Ｐの端部Ｐ
１を押し潰す外圧を、前記端部Ｐ１を挟み込み自在な位
置に設けた一対のローラーＲ１，Ｒ２に対し、相互接近
方向への力を付与しつつ、前記ローラーＲ１，Ｒ２を前
記管Ｐ１の軸方向へ移動させることにより得ることとし
たが、前記端部Ｐ１を押し潰す外圧を得るのに、図２
（イ),（ロ),（ハ),（ニ）に示すように、前記端部Ｐ１
を挟み込み自在な位置に設けた一対のローラーＲ１，Ｒ
２に相互接近方向への力を付与して、それらローラーＲ
１，Ｒ２を、前記管Ｐ１の軸方向における一定位置で接
近移動させることにより得ることとしてもよい。また、
管Ｐの端部Ｐ１を押し潰す外圧を得るときに使用する部
材としては、上述の実施例における一対のローラーＲ
１，Ｒ２に替え、上下一対の板状体又はブロック状体
（図外）を用いることとしてもよい。また、上述の実施
例では、前記管Ｐがポリエチレン製のガス管であった
が、前記管Ｐは、前記ガス管以外の導管、例えば、ポリ
エチレン製の水道管であってもよい。また、前記熱可塑
性樹脂は、前記ポリエチレン以外の樹脂であってもよ
い。Next, another embodiment will be described. In the above-described embodiment, in order to heat-bond the inner surfaces of the end portion 1 of the pipe P to each other, immediately after the heating means H is pulled out from the inside of the end portion P1, the end portion P1 is pushed by the external pressure. Although the crushing is performed, the heating means H may be crushed by the external pressure while pulling out the heating means H from the inside of the end P1. Further, in the above-described embodiment, the end portion P of the pipe P is
1 is applied to the pair of rollers R1 and R2, which are provided at positions where the end P1 is sandwiched, at a position where the end P1 can be sandwiched between them, while applying a force in the mutual approaching direction to the rollers R1 and R2. Although it is obtained by moving the end portion P1 in the direction shown in FIG.
As shown in (a), (b), (c) and (d), the end portion P1 is
A pair of rollers R1 and R provided at positions where the rollers can be freely sandwiched.
Applying a force in the direction of mutual approach to the two rollers R
1 and R2 may be obtained by moving closer to each other at a fixed position in the axial direction of the pipe P1. Also,
As the member used to obtain the external pressure for crushing the end P1 of the pipe P, the pair of rollers R in the above-described embodiment is used.
Instead of 1 and R2, a pair of upper and lower plates or blocks (not shown) may be used. Further, in the above-mentioned embodiment, the pipe P is a gas pipe made of polyethylene, but the pipe P may be a conduit other than the gas pipe, for example, a water pipe made of polyethylene. Moreover, the thermoplastic resin may be a resin other than the polyethylene.

【００１３】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

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

【図１】本発明方法の一実施例の手順を示す説明図FIG. 1 is an explanatory view showing the procedure of an embodiment of the method of the present invention.

【図２】本発明方法の別実施例の手順を示す説明図FIG. 2 is an explanatory view showing the procedure of another embodiment of the method of the present invention.

【図３】従来方法による管端部の閉塞状態を示す説明図FIG. 3 is an explanatory view showing a closed state of a pipe end portion according to a conventional method.

【図４】従来方法で閉塞された管端部の再使用時の処理
状態を示す説明図FIG. 4 is an explanatory view showing a processing state at the time of reuse of a pipe end portion closed by a conventional method.

【符号の説明】[Explanation of symbols]

Ｈ 加熱手段 Ｐ 管 Ｐ１ 端部 Ｒ１，Ｒ２ ローラー H heating means P tube P1 end R1, R2 roller

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 熱可塑性樹脂よりなる管（Ｐ）の端部
（Ｐ１）を、前記熱可塑性樹脂の熱融着を利用して閉塞
する樹脂管端部の閉塞方法であって、 前記管（Ｐ）の端部（Ｐ１）内へ加熱手段（Ｈ）を挿入
し、その加熱手段（Ｈ）にて前記端部（Ｐ１）の内面を
前記熱融着が可能な温度まで加熱した上で、前記加熱手
段（Ｈ）を前記端部（Ｐ１）内から引き出しつつ、又は
引き出した直後に、前記端部（Ｐ１）を外圧にて押し潰
すことにより、前記端部（Ｐ１）の内面同士を熱融着さ
せる樹脂管端部の閉塞方法。1. A method of closing an end portion (P1) of a pipe (P) made of a thermoplastic resin by utilizing heat fusion of the thermoplastic resin, the method comprising: After inserting the heating means (H) into the end portion (P1) of P) and heating the inner surface of the end portion (P1) by the heating means (H) to a temperature at which the heat fusion is possible, While pulling out the heating means (H) from the inside of the end portion (P1), or immediately after pulling out the heating means (H), the end portion (P1) is crushed by external pressure to heat the inner surfaces of the end portion (P1). A method of closing the end portion of the resin pipe to be fused. 【請求項２】 前記端部（Ｐ１）を挟み込み自在な位置
に設けた一対のローラー（Ｒ１),（Ｒ２）に対し、相互
接近方向への力を付与しつつ、前記ローラー（Ｒ１),
（Ｒ２）を前記管（Ｐ１）の軸方向へ移動させることに
より、前記端部（Ｐ１）を押し潰す外圧を得る請求項１
記載の樹脂管端部の閉塞方法。2. A pair of rollers (R1), (R2) provided at positions where the end (P1) can be sandwiched freely are applied to the pair of rollers (R1), (R2) while exerting a force in a mutually approaching direction.
An external pressure for crushing the end portion (P1) is obtained by moving (R2) in the axial direction of the pipe (P1).
The method for closing the end portion of the resin pipe described.
JP22122194A 1994-09-16 1994-09-16 Blocking method for resin tube end Pending JPH0885152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22122194A JPH0885152A (en) 1994-09-16 1994-09-16 Blocking method for resin tube end

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22122194A JPH0885152A (en) 1994-09-16 1994-09-16 Blocking method for resin tube end

Publications (1)

Publication Number Publication Date
JPH0885152A true JPH0885152A (en) 1996-04-02

Family

ID=16763369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22122194A Pending JPH0885152A (en) 1994-09-16 1994-09-16 Blocking method for resin tube end

Country Status (1)

Country Link
JP (1) JPH0885152A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997008520A1 (en) * 1995-08-25 1997-03-06 Yazaki Corporation Method of constituting data base for correcting load cell output, and weighting container
WO1998041382A1 (en) * 1997-03-14 1998-09-24 Meto International Gmbh Method and device for producing a security element and a corresponding security element

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997008520A1 (en) * 1995-08-25 1997-03-06 Yazaki Corporation Method of constituting data base for correcting load cell output, and weighting container
US6209382B1 (en) 1995-08-25 2001-04-03 Yazaki Corporation Method of constituting data base for correcting load cell output, and weighting container
US6412327B1 (en) 1995-08-25 2002-07-02 Yazaki Corporation Weight vessel of construction database for correcting outputs of load measurement sensing devices
WO1998041382A1 (en) * 1997-03-14 1998-09-24 Meto International Gmbh Method and device for producing a security element and a corresponding security element
US6440522B1 (en) 1997-03-14 2002-08-27 Meto International Gmbh Method and device for producing a security element and a corresponding security element

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