JP4482868B2 - 電気融着式樹脂管継手およびその製造方法 - Google Patents
電気融着式樹脂管継手およびその製造方法 Download PDFInfo
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- JP4482868B2 JP4482868B2 JP2004139675A JP2004139675A JP4482868B2 JP 4482868 B2 JP4482868 B2 JP 4482868B2 JP 2004139675 A JP2004139675 A JP 2004139675A JP 2004139675 A JP2004139675 A JP 2004139675A JP 4482868 B2 JP4482868 B2 JP 4482868B2
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- heating wire
- resin pipe
- connector pin
- type resin
- fitting groove
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- Expired - Lifetime
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- 229920005989 resin Polymers 0.000 title claims description 38
- 239000011347 resin Substances 0.000 title claims description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 119
- 238000003780 insertion Methods 0.000 claims description 23
- 230000037431 insertion Effects 0.000 claims description 23
- 238000005304 joining Methods 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 12
- 229920005992 thermoplastic resin Polymers 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000010410 layer Substances 0.000 claims description 5
- 239000002356 single layer Substances 0.000 claims description 5
- 230000004927 fusion Effects 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 2
- 238000005493 welding type Methods 0.000 claims 2
- 230000004048 modification Effects 0.000 description 13
- 238000012986 modification Methods 0.000 description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229910001120 nichrome Inorganic materials 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 241000587161 Gomphocarpus Species 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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"
- B29C65/3468—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" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
-
- 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"
- B29C65/3404—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" characterised by the type of heated elements which remain in the joint
- B29C65/342—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" characterised by the type of heated elements 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"
- B29C65/3472—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" characterised by the composition of the heated elements which remain in the joint
- B29C65/3476—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" characterised by the composition of the heated elements 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
- 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
- B29C66/50—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
- B29C66/5229—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
- B29C66/70—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
- B29C66/72—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 structure of the material of the parts to be joined
- B29C66/723—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 structure of the material of the parts to be joined being multi-layered
-
- 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
- B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/731—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
- B29C66/7316—Surface properties
- B29C66/73161—Roughness or rugosity
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
第1態様の継手について図1〜4を参照し説明する。図1は、第1態様の継手の断面図である。図2は、図1の継手の製造方法を説明する図である。図3は、図2(d)の部分拡大図である。図4は、図1のコネクタピンの変形例を説明する図である。図5は、図1の電熱線とコネクタピンの接続構造の変形例を説明する図である。
第1変形例のコネクタピン11aの接合部112aは、図4(a)に示すように、凸状のR面に形成された底面を備えている。この場合には、図1のような平滑面とほぼ同等の接合強度を得ることができる。
図2(a)に示すように、受口13、14に挿着孔121と嵌着溝15が形成された樹脂パイプ12を準備する。
図3に示すように、電熱線2の一方の端部21をコネクタピン11aの接合部112に対し位置決めする。コネクタピン11aの端子接続部111の上端面に上部電極31を適宜な力で加圧して押し当てる。また、抵抗溶接用の下部電極32を電熱線2を介し接合部112に加圧しながら押し当てる。このようにすると、電熱線2の一方の端部21の外周面は接合部112の底面に押圧された状態となる。その後、上部電極31と下部電極32との間に所定の大きさの電流を流し、接合部112の底面に電熱線2を接合する。
第1変形例は、図5(a)において平面視で示すように、嵌着溝15が挿着孔121で止まらず、挿着孔121を通した位置まで伸びて嵌着溝15の端部15aが形成されている構造である。第1変形例の場合、嵌着溝15に嵌着された電熱線2の端部は装着溝15の端部15aに嵌着される。その結果、電熱線2の端部は装着溝15の端部15aで係止された状態で固定されるので電熱線2の接合部の位置が位置ずれし難くなり、もって、接合強度のバラツキが解消される。なお、装着溝15の端部15aは、実線で示すように直線状であってもよいし、点線で示すように曲線状の端部15bであってもよい。
本発明の第2態様について図6(a)を参照して説明する。なお、図6(a)において図1と同様な構成については同一符号を付し、詳細な説明を省略する。
第2態様の継手4は、図6(a)に示すように、配管が接続される2つの受口43、44を両端に備え熱可塑性樹脂を主体とした管体42と、受口43、44に巻回された1本の電熱線2と、受け口43、44に立設されるとともに電熱線2の両端部が底部に接続されたコネクタピン11とを有している。
本発明の第3態様について図6(b)を参照して説明する。
第3態様の継手5は、図6(b)に示すように、配管が接続される2つの受口53、54を両端に備え熱可塑性樹脂を主体とした管体52と、受口53、54に巻回された1本の電熱線2と、受け口53、54に立設されるとともに電熱線2の両端部が底部に接続されたコネクタピン11とを有している。
11 コネクタピン
12 樹脂パイプ
13 受口
14 受口
15 嵌着溝
2 電熱線
Claims (11)
- 配管が接続される少なくとも2の受口を有する熱可塑性樹脂を主体とした管体と、前記受口に巻回された電熱線と、前記電熱線の両端部が接続されるとともに底部の一部が露出した状態で前記管体に立設された一対のコネクタピンと、前記管体の内面に螺旋状に形成され前記電熱線が嵌着された嵌着溝とを備え、前記一対のコネクタピンは、前記管体に形成された二の挿着孔に各々挿着されており、前記嵌着溝の一方の端部は一の挿着孔に他方の端部は他の挿着孔に連結されかつ前記嵌着溝の一方の端部は前記一の挿着孔を通過した位置まで伸びるように形成されており、前記電熱線の一方の端部は、前記嵌着溝の一方の端部に嵌着されているとともに前記コネクタピンの底部の露出した一部にその外周面が接合されている電気融着式樹脂管継手。
- 前記一の挿着孔を通過した位置まで伸びるように形成された嵌着溝の一方の端部は、前記嵌着溝の底面に対し鉛直方向に曲げられている請求項1に記載の電気融着式樹脂管継手。
- 前記電熱線は、その両端部の外周面が前記コネクタピンの底部に接合されている請求項1又は2のいずれかに記載の電気融着式樹脂管継手。
- 前記コネクタピンの底部は平坦面である請求項1乃至3のいずれかに記載の電気融着式樹脂管継手。
- 前記コネクタピンと前記電熱線とは溶接で接合されている請求項1乃至4のいずれかに記載の電気融着式樹脂管継手。
- 前記管体は、単層構造である請求項1乃至5のいずれかに記載の電気融着式樹脂管継手。
- 前記管体は、複層構造である請求項1乃至6のいずれかに記載の電気融着式樹脂管継手。
- 前記電熱線は、裸線である請求項1乃至7のいずれかに記載の電気融着式樹脂管継手。
- 前記嵌着溝は、前記電熱線の大きさより深く形成されている請求項1乃至8のいずれかに記載の電気融着式樹脂管継手。
- 請求項1に記載の電気融着式樹脂管継手の製造方法であって、前記嵌着溝および挿着孔が形成された前記管体を準備する準備工程と、前記コネクタピンを前記挿着孔に挿着するコネクタピン挿着工程と、前記前記嵌着溝の一方の端部に前記電熱線の一方の端部を嵌着して当該電熱線の一方の端部を係止し前記嵌着溝に前記電熱線を嵌着しながら巻回する電熱線嵌着工程と、前記電熱線の端部の外周面を前記コネクタピンの底面に接合する接合工程を含む製造方法。
- 電熱線とコネクタピンを抵抗溶接で接合する請求項10に記載の電気融着式樹脂管継手の製造方法。
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JP2004139675A JP4482868B2 (ja) | 2004-05-10 | 2004-05-10 | 電気融着式樹脂管継手およびその製造方法 |
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JP4482868B2 true JP4482868B2 (ja) | 2010-06-16 |
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JP2007146990A (ja) * | 2005-11-29 | 2007-06-14 | Hitachi Metals Ltd | 分岐継手、この分岐継手を用いた消雪スプリンクラ配管ユニット及び消雪パネルユニット、分岐パイプ支持方法 |
JP4919152B2 (ja) * | 2006-11-09 | 2012-04-18 | 日立金属株式会社 | 分岐継手、この分岐継手を用いた消雪スプリンクラ配管ユニット及び消雪パネルユニット |
JP5348573B2 (ja) * | 2012-04-20 | 2013-11-20 | 日立金属株式会社 | 電気融着継手の製造方法 |
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