JP3187654B2 - 分岐サドルの取付方法 - Google Patents
分岐サドルの取付方法Info
- Publication number
- JP3187654B2 JP3187654B2 JP15200394A JP15200394A JP3187654B2 JP 3187654 B2 JP3187654 B2 JP 3187654B2 JP 15200394 A JP15200394 A JP 15200394A JP 15200394 A JP15200394 A JP 15200394A JP 3187654 B2 JP3187654 B2 JP 3187654B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- seat
- branch saddle
- branch
- rigidity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
- B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
- B29C65/362—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising at least a single wire, e.g. in the form of a winding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
- B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
- B29C65/364—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint being a woven or non-woven fabric or being a mesh
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
- B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
- B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—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
- B29C66/13—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
-
- 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
- B29C66/52296—Joining tubular articles involving the use of a socket said socket comprising sealing elements, e.g. gaskets
-
- 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
- B29C66/52298—Joining tubular articles involving the use of a socket said socket being composed by several elements
-
- 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
- B29C66/8223—Worm or spindle mechanisms
-
- 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
- B29C66/70—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)
- Textile Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
に関し、特にたとえばパイプと分岐サドル(座部)とを
密着させて両者を接合する、分岐サドルの取付方法に関
する。
は、分岐サドルの座部の曲率半径をパイプの曲率半径よ
り小さくし、パイプに座部を押し付けて座部を拡径させ
ることによって、座部をパイプに沿わせるようにしてい
た。
の剛性が座部の剛性より大きいことを前提としており、
パイプの剛性が座部の剛性より小さい場合には適用でき
なかった。すなわち、パイプの剛性が座部の剛性より小
さい場合には、たとえば図7に示すように、パイプ1が
変形されてパイプ1と座部2との間に隙間3が生じるた
め、十分な接合強度を得ることができなかった。
イプの剛性が座部の剛性よりも小さい場合でもパイプと
座部とを十分な強度で接合できる、分岐サドルの取付方
法を提供することである。
性より大きい剛性を有する座部を含む分岐サドルをパイ
プに取り付ける方法であって、(a) 座部の曲率半径をパ
イプの曲率半径より大きくし、(b) パイプに座部を第1
の方向から押し付けることによってパイプを、曲率半径
がパイプより大きい座部に沿うように変形させ、(c) パ
イプを座部に密着させた状態で両者を接合するようにし
た、分岐サドルの取付方法である。
径より大きくされ、かつ座部の剛性がパイプの剛性より
大きくされる。したがって、パイプに座部を押し付ける
と、パイプが座部に沿うように変形され、パイプと座部
とが密着される。第1の方向と交差する第2の方向への
パイプの変形を防止しながらパイプに座部を押し付ける
ようにすると、第1の方向からの力に対するパイプの強
度を補強できるので、接合面において融着または接着に
必要な圧力を確保できる。
の剛性より小さい場合でも、パイプと座部とを密着させ
ることができるので、両者を十分な強度で接合できる。
この発明の上述の目的,その他の目的,特徴および利点
は、図面を参照して行う以下の実施例の詳細な説明から
一層明らかとなろう。
を用いて、老化したガス用鋳鉄管12の内部に挿入され
た更生管14に分岐サドル16を取り付けた状態を示す
図解図である。更生管14は、たとえばポリエチレンや
ポリ塩化ビニル等の合成樹脂からなり、図2に示すよう
に、所定形状に折り畳まれた状態で鋳鉄管12の内部に
挿入され、熱風を吹き込むこと等によって鋳鉄管12の
内壁に沿うように拡径される。そのため、更生管14は
比較的薄く形成され、その剛性は比較的小さい。
化ビニル等の合成樹脂からなり、図3および図4に示す
ように、更生管14の曲率半径R1 より大きい曲率半径
R2(図4)を有する略円盤状の座部18を含む。座部
18の略中央部には、分岐孔20が形成され、座部18
の外面には、分岐孔20から立ち上がって分岐管部22
が形成される。そして、座部18の内面には、所定のキ
ュリー温度を有する磁性合金ヒータ24が埋め込まれる
(図3)。なお、磁性合金ヒータ24のキュリー温度
は、その各構成成分の配合割合を変化させることによっ
て調整でき、接合時の最適融着温度を考慮して設定され
る。
際には、まず、鋳鉄管12の所定個所にホールソー等を
用いて第1の孔26(図1)が形成される。この第1の
孔26は、分岐サドル16の座部18を収容し得るよう
に、座部18よりやや大きく形成される。そして、更生
管14の外面に分岐サドル16が位置決めされ、たとえ
ば図4に示すような押圧器28を用いて分岐サドル16
(座部18)が更生管14に押し付けられる。押圧器2
8のハンドル30を回して押圧部32を押し下げていく
と、更生管14が座部18に沿うように徐々に変形さ
れ、図5に示すように、座部18と更生管14とが密着
される。
座部18(磁性合金ヒータ24)の周囲にワークコイル
34(図5)が配置され、ワークコイル34に高周波電
源36が接続される。高周波電源36をオンすると、電
磁誘導によって磁性合金ヒータ24(図3)に高周波電
流が付与され、表皮効果によって磁性合金ヒータ24が
急激に発熱する。そして、磁性合金ヒータ24の温度が
キュリー温度に達すると、磁性合金ヒータ24の透磁率
が急激に小さくなるため電流はほとんど流れなくなり、
磁性合金ヒータ24はそれ以上温度上昇しなくなる。熱
放射等によって温度が低下すると、磁性合金ヒータ24
には再び電流が流れる。このような動作を繰り返すた
め、磁性合金ヒータ24の温度は実質的に所定のキュリ
ー温度に保たれる。したがって、座部18と更生管14
との接合面は磁性合金ヒータ24のキュリー温度または
その近傍で加熱され、融着される。
後、ワークコイル34および押圧器28が取り外され、
更生管14に更生管14と分岐管部22とを連通する第
2の孔38(図1)が形成される。そして、図1に示す
ように、鋳鉄等からなる補強用のクランプ部材40が鋳
鉄管12の外面に装着される。クランプ部材40は、半
割り円筒状の第1片42aおよび第2片42bを含む。
第1片42aの所定個所には、分岐サドル16の分岐管
部22を引き出す孔44が形成され、孔44の内周面に
は、シールリング溝46が形成される。また、第1片4
2aの内面には、第1の孔26を囲むようにしてシール
リング溝48が形成される。そして、シールリング溝4
6および48のそれぞれにシールリング50および52
が装着される。したがって、第1片42aと第2片42
bとをボルト・ナット54を用いて接合すると、シール
リング50によって分岐サドル16とクランプ部材40
との隙間がシールされ、シールリング52によって鋳鉄
管12とクランプ部材40との隙間がシールされる。
22に図示しない継手を介して図示しない分岐管が接続
される。この実施例によれば、更生管14を変形させる
ことによって、更生管14を座部18の内面に密着させ
ることができるので、両者を十分な強度で接合できる。
また、更生管14と座部18とを磁性合金ヒータ24を
用いて素早く接合できるので、更生管14の肉厚が薄く
ても更生管14が熱変形されるといった問題は生じな
い。
積が小さくても磁性合金ヒータ24によって両者を確実
に融着できるので、座部18を小型化できる。したがっ
て、鋳鉄管12の第1の孔26を比較的小さく形成する
ことができるので、クランプ部材40を装着することと
相俟って、鋳鉄管12に十分な強度を持たせることがで
きる。
部に挿入された更生管14に分岐サドル16を取り付け
る場合を示したが、この発明は、たとえば図6に示すよ
うに、単独で用いられるパイプ52に分岐サドル16を
取り付ける場合にも適用できる。この場合、パイプ52
を挟むようにして規制部材54を配置し、分岐サドル1
6を押し付ける第1の方向(矢印方向)に交差する第2
の方向へのパイプ52の変形を防止するようにすると、
第1の方向(矢印方向)からの力に対するパイプ52の
強度を補強できるので、接合面において融着に必要な所
定の圧力を確保できる。
を任意に設定できるので、座部18とパイプ52との接
合面積を広く確保することができる。したがって、接合
手段としては、上述した磁性合金ヒータ24の他、電熱
線を含むヒータや接着剤等が用いられ得る。
す図解図である。
ある。
解図である。
Claims (2)
- 【請求項1】パイプの剛性より大きい剛性を有する座部
を含む分岐サドルを前記パイプに取り付ける方法であっ
て、 (a) 前記座部の曲率半径を前記パイプの曲率半径より大
きくし、 (b) 前記パイプに前記座部を第1の方向から押し付ける
ことによって前記パイプを、曲率半径が前記パイプより
大きい前記座部に沿うように変形させ、 (c) 前記パイプを前記座部に密着させた状態で両者を接
合するようにした、分岐サドルの取付方法。 - 【請求項2】前記ステップ(b) では、前記第1の方向と
交差する第2の方向への前記パイプの変形を防止しなが
ら前記パイプに前記第1の方向から前記座部を押し付け
るようにした、請求項1記載の分岐サドルの取付方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15200394A JP3187654B2 (ja) | 1994-07-04 | 1994-07-04 | 分岐サドルの取付方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15200394A JP3187654B2 (ja) | 1994-07-04 | 1994-07-04 | 分岐サドルの取付方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0814464A JPH0814464A (ja) | 1996-01-16 |
JP3187654B2 true JP3187654B2 (ja) | 2001-07-11 |
Family
ID=15530947
Family Applications (1)
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JP15200394A Expired - Fee Related JP3187654B2 (ja) | 1994-07-04 | 1994-07-04 | 分岐サドルの取付方法 |
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1994
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JPH0814464A (ja) | 1996-01-16 |
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