JPS5916716A - 分岐サドルの融着方法 - Google Patents

分岐サドルの融着方法

Info

Publication number
JPS5916716A
JPS5916716A JP57126319A JP12631982A JPS5916716A JP S5916716 A JPS5916716 A JP S5916716A JP 57126319 A JP57126319 A JP 57126319A JP 12631982 A JP12631982 A JP 12631982A JP S5916716 A JPS5916716 A JP S5916716A
Authority
JP
Japan
Prior art keywords
branch saddle
mother pipe
branch
saddle
molten surfaces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP57126319A
Other languages
English (en)
Other versions
JPH0221382B2 (ja
Inventor
Masanao Horibe
堀部　正直
Ryuichiro Nakamura
隆一郎 中村
Akira Koike
小池　彰
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.)
Mitsubishi Plastics Inc
Original Assignee
Mitsubishi Plastics Inc
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 Mitsubishi Plastics Inc filed Critical Mitsubishi Plastics Inc
Priority to JP57126319A priority Critical patent/JPS5916716A/ja
Publication of JPS5916716A publication Critical patent/JPS5916716A/ja
Publication of JPH0221382B2 publication Critical patent/JPH0221382B2/ja
Granted 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • 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
    • B29C66/342—Preventing air-inclusions
    • 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
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81422—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being convex
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
    • 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
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/922—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9221—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force or the mechanical power
    • B29C66/92211—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force, the mechanical power or the displacement of the joining tools by measuring the pressure, the force or the mechanical power with special measurement means or methods

Landscapes

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

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 本発明は、旬°管と分岐サドルとを強固に融着接合する
方法、およびその装置に関する。
一般に、母管から枝管を取出して分岐配管する場合、母
管の外周面に分岐サドルを融着接合し、該分岐サドルを
介して枝管を取出すことが行われている。そして、母管
に分岐サドルを融着接合する場合、従来は母管と分岐サ
ドルとの接合面を溶融させたのち、単に、該溶融面同士
を押付けて融着接合していたが、溶融面に巻込んだ空気
が完全に抜けきらガいために融着強度の低下を来し、枝
管に曲げモーメントが作用したときこの融着部分に剥離
が生じる等の問題があった。
本発明者らは、かかる従来の問題点を解決すべく釧意検
討の結果、母管と分岐サドルとの溶融面同士を押付けた
際に、両面を数回はど摺り合わせると、溶融面に巻込ん
だ空気を完全に追出すことができ、意外に思われるほど
融着強度が高まることを見出し、本発明を完成するに至
つた。
即ち、本発明は、曲管と分岐サドルとを摺り合わせて強
固に接合できる融着方法、及びその装置を提供するもの
である。
以下、本発明を図面にて詳細に説明する。第１図は、本
発明の一実施例を示す融着装置の正面図、第２図は第１
図に示した融着装置の部分断面平面図、第３図他の実施
例を示す融着装置の要部正面図であって、図中符号Ａは
塩化ビニル樹脂、ポリエチレン樹脂等の合成樹脂からな
る母管、Ｂは曲管Ａと同種の合成樹脂からｋる分岐サド
ル、Ｃは融着装置、Ｄは熱板である。
本発明の融着装置Ｃは、クランプ装置／に一対のスライ
ド杆コ、λを連結し、該スライド杆−７２に連結杆３を
摺動自在に挿通すると共に該連結杆３にホルダーグを設
け、一方スライド杆λ１．２の下方に昇降装置Ｓを付設
した構成からなり、トルクレンチ７を矢印方向に揺動さ
せた際にホルダークに保持した分岐サドルＢをクランプ
装置／に保持した母管Ａに押付けて融着接合するもので
ある。
次に、本融着装置Ｃの最も特徴とするクランプ装置／、
及び昇降装置Ｓの具体的構成について、更に詳しく説明
する。
クランプ装置／は、半円弧状の下部支持板／／と、上部
支持板／２との一端部をピン接合し、他端部を締付具／
３で連結して両支持板／／、７．２間に母管Ａを保持す
る構成からなる。
この支持板／／、／；ｌの内面、即ち母管Ａの外周面と
接触する把持面に回転部材／ＩＩを回動自在に埋設する
。第２図には、回転部材／４’として円筒体を用い、該
円筒体を複数本並列にして把持面に埋設した構成につい
て示したが、これ以外にも回転部材／ｌｌとして球体を
用い、該球体を回動自在に埋設してもよい。従って、母
管Ａは、回転部材／りを介してクランプ装着／に回動自
在に保持されることになる。
一方、昇降装置Ｓは、ペダルＳ／の中間部を基台乙に軸
支し、該ペダルＳ／の足踏側にコイルばねＳ２を張設し
た構成からなり、ペダルＳ／を足踏することにより、融
着装置Ｃを上下に移動させることができる。
尚、第３図は昇降測置左の他の実施例を示したものであ
って、電動モータＳ３の作動によりロッド、１＋を伸縮
させて融着装置Ｃを上下に移動させるようにしてもよい
。
本発明の融着製装置は、以上の構成からなるものであり
、次にこの装置を用いて分岐サドルＢを母管Ａに接合す
る手順を説明する。
まず、第１図に示すように、母管Ａをクランプ装置／に
保持し、該母管Ａの外周面と、ホルダーダに保持した分
岐サドルＢの接合面との間に、熱板りを介在させ、両接
合面を溶融させる。
次いで、熱板りを取外し、トルクレンチ７を作用させて
、分岐サドルＢを母管Ａに一定圧力で押伺けつつ昇降装
置Ｓを作動させる。この昇降装置Ｓが作動すると、融着
装置Ｃは、母管Ａを中心として上下に揺動する。即ち、
母管Ａは配管施工されて回動しないため、融着装置Ｃが
回転部材／りを介して上下に揺動し、従って、母管Ａと
分岐サドルＢとの溶融面が母管Ａの周方向に摺り合わせ
られることになる。
かくして、母管Ａと、分岐サドルＢとの溶融面に介在し
ていた空気を完全に追出したのち、昇降装置Ｓの作動を
停止し、溶融面を静止させたまま一定圧力で押付けって
所定時間保持する。
以上の接合手順を経て、母管Ａと分岐サドルＢとは、一
体強固に融着接合される。
以上詳細した如く、本発明によれば、母管と分岐サドル
との融着強度を従来と比べて格段に高めることができた
。しかもこの接合に用いられる融着装置は、操作手順が
簡単であるために特に熟練を必要とせず、現場での配管
施工が迅速、確実に行えるものである。
【図面の簡単な説明】
第１図は、本発明の一実施例を示す融着装置の正面図、
第２図は第１図に示した融着装置の部分断面平面図、第
３図は他の実施例を示す融着装置の要部正面図である。 Ａ・・・・・・母管、Ｂ・・・・・・分岐サドル、Ｃ・
・・・・融着装置、Ｄ・・・熱板、／・・・クランプ装
置、／り・・・・・・回転部材、コ・・・スライド杆、
３・・・・・連結杆、り・・・・・ホルダー、Ｓ・・・
・・昇降装置 　７−

Claims (1)

  1. 【特許請求の範囲】 １　母管の外周面と、分岐サドルの接合面とを熱板に押
    当て溶融させたのち、該溶融面同士を押付けつつ摺り合
    わせ、次いで溶融面を静止させたまま一定圧力で押付け
    つつ所定時間保持したことを特徴とする分岐サドルの融
    着方法 ２　母管（Ａ）を保持するクランプ装置（１）に一対ノ
    スライド杆（２）　、　（２＋を連結し、該スライド杆
    （２）。 （２）に連結杆（３）を摺動自在に挿通すると共に該連
    結杆（３）に分岐サドル（Ｂ）を保持するホルダー（グ
    ）を設けた分岐サドルの融着装置において、前記クラン
    プ装置（１）の把持面に回転部材α（イ）を埋設し、該
    回転部材側を介して母管（Ａ）を回動自在に保持するよ
    うになし、一方スライド（２）。 （２）の下方に昇降装置（５）を付設したことを特徴と
    する分岐サドルの融着装置
JP57126319A 1982-07-20 1982-07-20 分岐サドルの融着方法 Granted JPS5916716A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57126319A JPS5916716A (ja) 1982-07-20 1982-07-20 分岐サドルの融着方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57126319A JPS5916716A (ja) 1982-07-20 1982-07-20 分岐サドルの融着方法

Publications (2)

Publication Number Publication Date
JPS5916716A true JPS5916716A (ja) 1984-01-27
JPH0221382B2 JPH0221382B2 (ja) 1990-05-14

Family

ID=14932239

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57126319A Granted JPS5916716A (ja) 1982-07-20 1982-07-20 分岐サドルの融着方法

Country Status (1)

Country Link
JP (1) JPS5916716A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4656857A (en) * 1984-11-29 1987-04-14 Kabushiki Kaisha Komatsu Seisakusho Method for cutting uncoiled web
JPS63134499U (ja) * 1987-02-25 1988-09-02

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4656857A (en) * 1984-11-29 1987-04-14 Kabushiki Kaisha Komatsu Seisakusho Method for cutting uncoiled web
JPS63134499U (ja) * 1987-02-25 1988-09-02

Also Published As

Publication number Publication date
JPH0221382B2 (ja) 1990-05-14

Similar Documents

Publication Publication Date Title
US4913756A (en) Techniques for welding thermoplastic tubes
US2698273A (en) Method for joining thermoplastic sheet material
US4832773A (en) Techniques for welding thermoplastic tubes
US20160082651A1 (en) Device for welding plastic tubes
JPS5916716A (ja) 分岐サドルの融着方法
JPH084947A (ja) クランプ装置
JP2768575B2 (ja) 長尺テ−プの接続方法
CN216359394U (zh) 一种吊架用焊接工装
JP2592914B2 (ja) 熱可塑性合成樹脂製管の融着接合構造及び融着接合方法
GB2585385A (en) Welding machine
JPH02106325A (ja) 合成樹脂パイプの接合方法並びにその接合装置
JP2005238659A (ja) 突き合わせ融着接合方法及び加熱具
KR880002892Y1 (ko) 합성수지 통체의 부재 접합장치
JPS63111037A (ja) プラスチツク部品の溶着方法およびその装置
JPH07108608A (ja) クランプ装置
JPH02199395A (ja) サドル継手の固定装置
JPS6321604B2 (ja)
JPH0343974B2 (ja)
CN113650304A (zh) 一种塑胶叶轮焊接方法及结构
JPS61272130A (ja) プラスチツク管の接合方法
KR0136227B1 (ko) 이종금속 파이프의 접합장치
JP3157064B2 (ja) 融着機
JPS6169433A (ja) 樹脂用スピン溶接機
GB2168000A (en) Improvements in gutters for roofs, method of assembling gutters and apparatus for assembling gutters
JPH05293891A (ja) 融着機