JPS5828320A - Welding method of plastic tube - Google Patents

Welding method of plastic tube

Info

Publication number
JPS5828320A
JPS5828320A JP12652581A JP12652581A JPS5828320A JP S5828320 A JPS5828320 A JP S5828320A JP 12652581 A JP12652581 A JP 12652581A JP 12652581 A JP12652581 A JP 12652581A JP S5828320 A JPS5828320 A JP S5828320A
Authority
JP
Japan
Prior art keywords
heated
plastic tube
flange surface
joint
plastic
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
JP12652581A
Other languages
Japanese (ja)
Inventor
Takehiro Ito
伊藤　武廣
Saburo Kadowaki
三郎 門脇
Toshio Inoue
井上　敏雄
Yoshikuni Tsuda
津田　芳邦
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP12652581A priority Critical patent/JPS5828320A/en
Publication of JPS5828320A publication Critical patent/JPS5828320A/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
    • 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"
    • 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • 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
    • 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
    • B29C66/01—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
    • B29C66/01—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
    • B29C66/1226—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 one bevelled 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
    • B29C66/70—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
    • 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
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/24—Pipe joints or couplings
    • B29L2031/243—Elbows

Abstract

PURPOSE:To weld plastic tubes with sufficient pressure and with reduced inside burrs by a method wherein the end of the flare part of a preset plastic tube end is heated and melted and the end is welded to the heated flange surface of a plastic tube joint tube. CONSTITUTION:The flange surface 110 at the joint end of a polyolefin plastic tube 1 and the end 210 of a polyolefin plastic tube 2 are brought into contact with a circular heating jig 3 to fuse the flange surface 110 and the flare end 210. Afterwards, the circular heating jig 3 is removed and the end 210 of the heated flare part at the tube end is welded to the heated flange surface 110 at the joint end. Particularly, if a notch 12 is provided on the inner circumferential edge of the flange surface at the end of the joint, molten plastics can be absorbed by this notch part 12 and burrs can be reduced strikingly. Since the root of the flare part is not melted there remains hardness enough to carry out welding under sufficient surface pressure.

Description

【発明の詳細な説明】 本発明はプラスチック管を加熱融着によって接合する方
法の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the method of joining plastic tubes by heat fusion.

接着剤による′接合が困難なポリオレフィン系プラスチ
ック管の接合においては、プラスチックスリーブの内面
並びにプラスチック管端部の外面をそれぞれ加熱治具に
より溶融し、而°るのち、第１図に示すよちにプラスチ
ックスリーブ１゛にプラスチック管端部２′を圧入する
方法が用いられている。When joining polyolefin plastic pipes, which are difficult to join with adhesives, the inner surface of the plastic sleeve and the outer surface of the end of the plastic tube are melted using a heating jig, and then, as shown in Figure 1, A method is used in which the plastic tube end 2' is press-fitted into the plastic sleeve 1'.

しかし、この方法では、上記圧入時にスリーブ内面の溶
融プラスチックがプラスチック管先端でしごかれ、スリ
ーブ奥方にパリ３′が形成されて、通水抵抗が著しく増
大するといった不利がある。However, this method has the disadvantage that during press-fitting, the molten plastic on the inner surface of the sleeve is squeezed by the tip of the plastic tube, forming a gap 3' at the back of the sleeve, which significantly increases water flow resistance.

本発明に係るプラスチック管の接合方法は、上述の不利
を軽減し得る方法であり、予め設けたプラスチック管端
のフレア部端面を加熱溶融させ、該フレア部端面をプラ
スチック管継手端の加熱したフランジ面に融着すること
を特徴とする方法である。The plastic pipe joining method according to the present invention is a method that can alleviate the above-mentioned disadvantages, and involves heating and melting the flared end face of the plastic pipe end provided in advance, and joining the flared end face to the heated flange of the plastic pipe joint end. This method is characterized by fusion bonding to a surface.

以下、図面により本発明を説明する。The present invention will be explained below with reference to the drawings.

第２図において、１けポリオレフィン系プラスチック管
継手（エルボ−）であり、両端にはフランジ部１１．１
１が設けられている。１２はフランジ面の内周縁に設け
た切欠である。２はポリオレフィン系プラスチック管で
あり、管端にはフレア部２１が設けられている。このフ
レア部２１は工場内で通常のフレア加工によって予め設
けられたものである。３は円板状の加熱治具である。In Figure 2, it is a single piece polyolefin plastic pipe joint (elbow), with flange parts 11.
1 is provided. 12 is a notch provided on the inner peripheral edge of the flange surface. 2 is a polyolefin plastic tube, and a flared portion 21 is provided at the tube end. This flare portion 21 is previously provided in a factory by normal flaring processing. 3 is a disc-shaped heating jig.

本発明を実施するには、まず、第２図において、継手端
のフランジ面１１０並びに管端フレア部端面２１０を円
板状加熱治具３に接触させ、７ラング面１１０並びにフ
レア部端面２１０をそれぞれ溶融させる。In order to carry out the present invention, first, as shown in FIG. Melt each.

而るのちけ、円板状加熱治具３を抜き取り、第３図に示
すように、継手端の加熱した７ランジ而１１０に管端の
加熱したフレア部端面２１．０を融着させる。Then, the disk-shaped heating jig 3 is removed, and the heated flared end surface 21.0 of the tube end is fused to the heated seven flange 110 of the joint end, as shown in FIG.

この場合、圧接面の溶融プラスチックは、内側と外側の
両方向に流動しようとするが、その流動は放射状であり
、内側方向流動に対する流動抵抗の方が外側方向流動に
対する流動抵抗よりも大であるから、７ラング面の内周
又はフレア部端の内周側にしぼり出されるプラスチック
は少量であり、従って、同上内周側に形成°されるパリ
は充分に小さくできる。特に、実施例に示すように、継
手端７ランジ面の内周縁に切欠部を設ければ、との切欠
部で溶融プラスチックを吸収でき、パリを一層に小さく
できる。In this case, the molten plastic on the pressure contact surface tries to flow both inward and outward, but the flow is radial, and the flow resistance to the inward flow is greater than the flow resistance to the outward flow. , 7. The amount of plastic that is squeezed out on the inner periphery of the rung surface or the inner periphery of the end of the flared portion is small, so that the gap formed on the inner periphery of the above can be made sufficiently small. In particular, as shown in the embodiment, if a notch is provided at the inner circumferential edge of the flange surface of the joint end 7, the molten plastic can be absorbed by the notch, and the cracks can be further reduced.

又、上記の圧接時、プラスチック管端フレア部２１にお
いて、加熱溶融されている部分はフレア部端面２１０の
みであり、フレア部のつけ根は充分な硬さを備えている
から、フレア部端面２１０を継手フランジ面１１０に充
分な面王で王接できる。従って、融着強度を充分に保証
できる。In addition, during the above pressure welding, the only part of the plastic tube end flare section 21 that is heated and melted is the flare section end surface 210, and since the base of the flare section has sufficient hardness, the flare section end surface 210 is heated and melted. It can be connected to the joint flange surface 110 with sufficient surface roughness. Therefore, the fusion strength can be sufficiently guaranteed.

上述した通り、本発明によれば、プラスチック管端をプ
ラスチック継手端に充分な圧接力で、かつ内面パリの発
生をよく軽減して融着できる。As described above, according to the present invention, the end of the plastic pipe can be fused to the end of the plastic joint with sufficient pressure and the occurrence of inner surface cracks can be well reduced.

従って、本発明は、加熱融着に頼らざるを得ないポリオ
レフィン系プラスチック管の接合に極めて有用である。Therefore, the present invention is extremely useful for joining polyolefin plastic pipes that must rely on heat fusion.

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

第１図はプラスチック管の従、来の接合方法を示す説明
図、第２図並びに第３図は本発、明に係るプラスチック
管の接合方法を示し、第２図は接合前の状態を、第３図
は接合後の状態をそれぞれ示している。 図において、１は管継手、１１は７ラング部、１１０Ｉ
ｆｉ７１０Ｉｆｉ７ラングスチック管、２１はプラスチ
ック管端フレア部、２１０はフレア部端面である。FIG. 1 is an explanatory diagram showing a conventional joining method for plastic pipes, FIGS. 2 and 3 show a joining method for plastic pipes according to the present invention, and FIG. 2 shows the state before joining, FIG. 3 shows the state after bonding. In the figure, 1 is a pipe joint, 11 is a 7 rung part, and 110I
fi710Ifi7 Langstick tube, 21 is a plastic tube end flare part, and 210 is a flare part end surface.

Claims (1)

【特許請求の範囲】[Claims] （１）予め設けたプラスチック管端のフレア部端面を加
熱溶融させ、該フレア部端面をプラスチック管継手端の
加熱したフランジ面に融着することを特徴とするプラス
チック管の接合方法。(1) A method for joining plastic pipes, which comprises heating and melting a flared end face of a plastic pipe end provided in advance, and fusing the flared end face to a heated flange face of a plastic pipe fitting end.
JP12652581A 1981-08-11 1981-08-11 Welding method of plastic tube Pending JPS5828320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12652581A JPS5828320A (en) 1981-08-11 1981-08-11 Welding method of plastic tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12652581A JPS5828320A (en) 1981-08-11 1981-08-11 Welding method of plastic tube

Publications (1)

Publication Number Publication Date
JPS5828320A true JPS5828320A (en) 1983-02-19

Family

ID=14937358

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12652581A Pending JPS5828320A (en) 1981-08-11 1981-08-11 Welding method of plastic tube

Country Status (1)

Country Link
JP (1) JPS5828320A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0852308A1 (en) * 1996-09-25 1998-07-08 Hoechst Celanese Corporation Pressure vessel: overmolding a polyolefin onto a polyolefin
US6946050B2 (en) * 2003-01-27 2005-09-20 Nike, Llc Method for flange bonding
GB2555583A (en) * 2016-10-28 2018-05-09 Peak Pipe Systems Ltd A pipe

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5248534A (en) * 1975-10-16 1977-04-18 Toa Seiki Co Ltd Pipe butt welding method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5248534A (en) * 1975-10-16 1977-04-18 Toa Seiki Co Ltd Pipe butt welding method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0852308A1 (en) * 1996-09-25 1998-07-08 Hoechst Celanese Corporation Pressure vessel: overmolding a polyolefin onto a polyolefin
US5916647A (en) * 1996-09-25 1999-06-29 Celgard Llc Pressure vessel: overmolding a polyolefin onto a polyolefin
US6299820B1 (en) 1996-09-25 2001-10-09 Celgard Inc. Pressure vessel: overmolding a polyolefin onto a polyolefin
US6946050B2 (en) * 2003-01-27 2005-09-20 Nike, Llc Method for flange bonding
GB2555583A (en) * 2016-10-28 2018-05-09 Peak Pipe Systems Ltd A pipe

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