JPH0796261B2 - Bending method for synthetic resin pipes - Google Patents
Bending method for synthetic resin pipesInfo
- Publication number
- JPH0796261B2 JPH0796261B2 JP8209287A JP8209287A JPH0796261B2 JP H0796261 B2 JPH0796261 B2 JP H0796261B2 JP 8209287 A JP8209287 A JP 8209287A JP 8209287 A JP8209287 A JP 8209287A JP H0796261 B2 JPH0796261 B2 JP H0796261B2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- resin pipe
- pipe
- screw rod
- bending
- 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 - Lifetime
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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/08—Bending or folding of tubes or other profiled members
- B29C53/083—Bending or folding of tubes or other profiled members bending longitudinally, i.e. modifying the curvature of the tube 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/045—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames
-
- 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)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、合成樹脂管の曲げ加工法に関し、更に詳しく
は、加熱軟化させた合成樹脂管を弾性体を介して押圧す
ることによって、無理なく所望の角度に折り曲げること
ができる合成樹脂管の曲げ加工法に関する。Description: TECHNICAL FIELD The present invention relates to a method for bending a synthetic resin pipe, and more specifically, it is possible to force a synthetic resin pipe that has been softened by heating through an elastic body to force it. The present invention relates to a method for bending a synthetic resin pipe that can be bent at a desired angle without being bent.
（従来技術およびその問題点） 配管の施工現場では、予期せぬ障害物が存在することに
よって、合成樹脂管を所望の角度に折り曲げなければな
らないことがある。(Prior Art and Problems Thereof) In a pipe construction site, there is a case where the synthetic resin pipe must be bent at a desired angle due to the presence of an unexpected obstacle.
このような場合、従来は二人の作業者が合成樹脂管の両
端部を支持し、該合成樹脂管を加熱軟化させつつ管の外
側面をほかの作業者が押圧して折り曲げていた。しかし
ながら、この曲げ加工法の場合には少なくとも３人の作
業者を必要とし、また合成樹脂管を加熱軟化させつつ折
り曲げるのに長時間を要するために、配管施工に時間が
かかり過ぎるという問題があった。In such a case, conventionally, two workers have supported both ends of the synthetic resin pipe, and while heating and softening the synthetic resin pipe, another worker presses and bends the outer surface of the pipe. However, in the case of this bending method, at least three workers are required, and since it takes a long time to bend the synthetic resin pipe while heating and softening it, there is a problem that the pipe construction takes too much time. It was
また、実公昭61−36351号公報には、所望の曲面に折り
曲げた帯板に加熱軟化させた合成樹脂管を押付けて湾曲
させる管の曲げ加工具が提案されている。この加工具を
用いて合成樹脂管を折り曲げる場合には、合成樹脂管を
所望の曲率で湾曲させることができるという利点を有す
るものの、作業者が帯板に合成樹脂管を押付けて折り曲
げなければならないので、作業人員の削減にはならず、
また合成樹脂管が充分に加熱軟化されていないうちに作
業者が無理に力を加えて折り曲げたときには、管の断面
形状が偏平状に変形するという問題があった。Further, Japanese Utility Model Publication No. 61-36351 proposes a pipe bending tool for pressing and bending a heat-softened synthetic resin pipe on a strip bent to a desired curved surface. When a synthetic resin pipe is bent using this processing tool, it has the advantage that the synthetic resin pipe can be bent with a desired curvature, but the operator must press the synthetic resin pipe against the strip to bend it. Therefore, it does not reduce the number of workers,
Further, there is a problem that when the operator bends the synthetic resin pipe with force while the synthetic resin pipe is not sufficiently softened by heating, the cross-sectional shape of the pipe is deformed into a flat shape.
本発明は、かかる従来方法の問題点を解決したものであ
って、管の断面形状を偏平状に変形させることなく折り
曲げることができると共に、僅かな作業者だけで管を所
望の角度に折り曲げることができる合成樹脂管の曲げ加
工法を提供するものである。The present invention has solved the problems of the conventional method, and can bend a pipe without deforming the cross-sectional shape of the pipe into a flat shape, and bend the pipe to a desired angle with only a few operators. The present invention provides a method for bending a synthetic resin pipe capable of producing the same.
（問題点を解決するための手段） 本発明は、基台上に配設したクランプに合成樹脂管の両
端部を固定し、該合成樹脂管を加熱軟化させると共に、
基台の上面側方に突設したブラケットからねじ棒を突出
させ、該ねじ棒に接続した弾性体を介して合成樹脂管の
外側面を押圧しつつ所望の角度に折り曲げることを特徴
とするものである。(Means for Solving Problems) The present invention fixes both ends of a synthetic resin pipe to a clamp arranged on a base, heats and softens the synthetic resin pipe, and
Characterized in that a screw rod is projected from a bracket projecting laterally on the upper surface of the base, and is bent at a desired angle while pressing the outer surface of the synthetic resin pipe through an elastic body connected to the screw rod. Is.
以下、本発明の一実施例を図面に基づき詳細に説明す
る。An embodiment of the present invention will be described in detail below with reference to the drawings.
（実 施 例） 第１図は本発明で使用する折り曲げ装置の平面図、第２
図は第１図に示した装置の拡大側面図であって、図中符
号１は基台、２はクランプ、３はねじ棒、Ｐは合成樹脂
管である。(Example) FIG. 1 is a plan view of a folding device used in the present invention, and FIG.
The drawing is an enlarged side view of the apparatus shown in FIG. 1, in which reference numeral 1 is a base, 2 is a clamp, 3 is a threaded rod, and P is a synthetic resin pipe.
基台１の両端部にはクランプ２、２が相対する状態で配
置されている。クランプ２は半割状の下型21と上型22と
が一端部でヒンジ接合しており、その他端部をボルト等
で締付けることによって、下型21と上型22との間に挟持
した合成樹脂管Ｐを固定できるようになっている。Clamps 2 and 2 are arranged at both ends of the base 1 so as to face each other. The clamp 2 has a lower half mold 21 and an upper half mold 22 hinge-joined at one end, and the other end is tightened with a bolt or the like to be sandwiched between the lower half mold 21 and the upper half mold 22. The resin pipe P can be fixed.
また、前記下型21の下部には円盤状の突部12が設けられ
ており、該突部12が基台１の長手方向に延びる蟻溝12と
摺動自在に嵌合している。これによって、各クランプ
２、２は回転可能かっ相互に接近・離隔できるようにな
っている。A disc-shaped protrusion 12 is provided on the lower portion of the lower mold 21, and the protrusion 12 is slidably fitted in a dovetail groove 12 extending in the longitudinal direction of the base 1. As a result, the clamps 2 and 2 are rotatable and can approach and separate from each other.
一方、基台１の上面側方には、ブラケット11が突出して
おり、該ブラケット11にねじ棒３が螺合している。ねじ
棒３の一端部にはコイルバネ等の弾性体５が装着されて
おり、該弾性体５と押圧体６とが回動自在に接続してい
る。また、ねじ棒３の他端部にはハンドル４が設けられ
ており、該ハンドル４を回転させてることによって、前
記ブラケット11からねじ棒３を突出させたり、後退させ
ることができる。On the other hand, a bracket 11 projects to the side of the upper surface of the base 1, and a screw rod 3 is screwed into the bracket 11. An elastic body 5 such as a coil spring is attached to one end of the screw rod 3, and the elastic body 5 and the pressing body 6 are rotatably connected. A handle 4 is provided at the other end of the screw rod 3, and the screw rod 3 can be projected or retracted from the bracket 11 by rotating the handle 4.
本発明では、まず合成樹脂管Ｐの両端部をクランプ２、
２に固定し、該合成樹脂管Ｐの両端部に可撓性チューブ
８を挿通する。該可撓性チューブ８の端部にはフランジ
状の鍔81が設けられており、この鍔81の位置を変えるこ
とによって合成樹脂管Ｐの加熱位置を調整し、その他端
部に加熱装置７を接続する。加熱装置７としては、従来
公知の各種加熱装置を使用することができるが、温風加
熱装置を使用するのが好ましい。In the present invention, first, the two ends of the synthetic resin pipe P are clamped by the clamps 2,
2, and the flexible tubes 8 are inserted into both ends of the synthetic resin pipe P. A flange-shaped brim 81 is provided at the end of the flexible tube 8, and the heating position of the synthetic resin pipe P is adjusted by changing the position of the brim 81, and the heating device 7 is provided at the other end. Connecting. As the heating device 7, various conventionally known heating devices can be used, but it is preferable to use a warm air heating device.
一方、合成樹脂管Ｐの外周面にはリボンヒータ等の可撓
性を有する加熱シート９を巻回し、そのコードを電源に
接続する。On the other hand, a flexible heating sheet 9 such as a ribbon heater is wound around the outer peripheral surface of the synthetic resin pipe P, and the cord is connected to a power source.
このようにして、合成樹脂管Ｐを折り曲げ装置にセット
した後、加熱装置７から可撓性チューブ８を介して合成
樹脂管Ｐ内に加熱空気を吹き込むと共に、加熱シート９
に電源を流して管の内・外面から合成樹脂管Ｐを加熱す
る。In this way, after the synthetic resin pipe P is set in the bending device, heated air is blown into the synthetic resin pipe P from the heating device 7 through the flexible tube 8 and the heating sheet 9
Power is supplied to heat the synthetic resin pipe P from the inner and outer surfaces of the pipe.
そして、合成樹脂管Ｐが所定の温度に加熱軟化したのを
確認しつつハンドル４を回転させてねじ棒３を突出さ
せ、押圧体６で合成樹脂管Ｐの外側面を押圧する。この
とき、合成樹脂管Ｐは両端部がクランプ２、２に固定さ
れた状態で折れ曲がり、これと同時に各クランプ２、２
は相互に接近しつつ回転して合成樹脂管Ｐの曲がりを許
容する。この曲げ加工の際に、ねじ棒３の押圧力はコイ
ルバネ等の弾性体５を介して合成樹脂管Ｐの外側面に作
用するので、過激な押圧力が合成樹脂管Ｐに作用するこ
とがなく、元管の断面形状をほぼ維持した状態で緩かに
折れ曲がる。Then, while confirming that the synthetic resin pipe P is heated and softened to a predetermined temperature, the handle 4 is rotated to project the screw rod 3, and the pressing body 6 presses the outer surface of the synthetic resin pipe P. At this time, the synthetic resin pipe P is bent with both ends fixed to the clamps 2 and 2, and at the same time, the respective clamps 2 and 2 are bent.
Rotate while approaching each other to allow bending of the synthetic resin pipe P. During the bending process, the pressing force of the screw rod 3 acts on the outer surface of the synthetic resin pipe P via the elastic body 5 such as a coil spring, so that the extreme pressing force does not act on the synthetic resin pipe P. , Gently bends while maintaining the cross-sectional shape of the original pipe.
（発明の作用および効果） 以上に述べた如く、本発明は基台の両端部に配設したク
ランプに合成樹脂管の両端部を固定し、該合成樹脂管を
加熱軟化させつつ基台の上面側方に突設したブラケット
からねじ棒を突出させて合成樹脂管を折り曲げるので、
一人の作業者だけでも簡単に合成樹脂管を折り曲げるこ
とができる。また、前記ねじ棒にはコイルバネ等の弾性
体が装着されており、該弾性体を介してねじ棒の押圧力
を合成樹脂管の外側面に作用させるので、合成樹脂管に
過激な押圧力が直接作用することがない。このため、管
の断面形状が偏平状に変形することなく、ほぼ元管の形
状を維持したまま所望の角度に合成樹脂管を折り曲げる
ことができる。(Operation and Effect of the Invention) As described above, according to the present invention, the both ends of the synthetic resin pipe are fixed to the clamps provided at the both ends of the base, and the synthetic resin pipe is heated and softened while the top surface of the base is Since the screw rod is projected from the bracket protruding sideways and the synthetic resin pipe is bent,
Even a single worker can easily bend a synthetic resin pipe. Further, an elastic body such as a coil spring is attached to the screw rod, and the pressing force of the screw rod is applied to the outer side surface of the synthetic resin pipe through the elastic body, so that the synthetic resin pipe is exposed to extreme pressing force. It has no direct effect. Therefore, it is possible to bend the synthetic resin pipe at a desired angle while maintaining the shape of the original pipe without deforming the cross-sectional shape of the pipe into a flat shape.
第１図は本発明で使用する折り曲げ装置の平面図、第２
図は第１図の拡大側面図である。 １……基台、11……ブラケット ２……クランプ、３……ねじ棒 ４……ハンドル、５……弾性体 ６……押圧体、７……加熱装置 ８……可撓性チューブ、９……加熱シートFIG. 1 is a plan view of a folding device used in the present invention, and FIG.
The figure is an enlarged side view of FIG. 1 ... Base, 11 ... Bracket 2 ... Clamp, 3 ... Screw rod 4 ... Handle, 5 ... Elastic body 6 ... Pressing body, 7 ... Heating device 8 ... Flexible tube, 9 ...... Heating sheet
Claims (1)
両端部を固定し、該合成樹脂管を加熱軟化させると共
に、基台の上面側方に突設したブラケットからねじ棒を
突出させ、該ねじ棒に接続した弾性体を介して合成樹脂
管の外側面を押圧しつつ所望の角度に折り曲げることを
特徴とする合成樹脂管の曲げ加工法。1. A synthetic resin pipe is fixed to both ends of a clamp provided on a base to heat and soften the synthetic resin pipe, and a screw rod is projected from a bracket projecting laterally on the upper surface of the base. And bending the synthetic resin pipe at a desired angle while pressing the outer surface of the synthetic resin pipe through an elastic body connected to the screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8209287A JPH0796261B2 (en) | 1987-04-02 | 1987-04-02 | Bending method for synthetic resin pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8209287A JPH0796261B2 (en) | 1987-04-02 | 1987-04-02 | Bending method for synthetic resin pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63247020A JPS63247020A (en) | 1988-10-13 |
| JPH0796261B2 true JPH0796261B2 (en) | 1995-10-18 |
Family
ID=13764789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8209287A Expired - Lifetime JPH0796261B2 (en) | 1987-04-02 | 1987-04-02 | Bending method for synthetic resin pipes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0796261B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006283813A (en) * | 2005-03-31 | 2006-10-19 | Hitachi Metals Ltd | Elbow type EF joint and manufacturing method thereof |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02276622A (en) * | 1989-04-18 | 1990-11-13 | Mitsubishi Plastics Ind Ltd | Synthetic resin pipe bending equipment |
| DE19607069A1 (en) * | 1996-02-24 | 1997-08-28 | Braun Ag | Method and device for bending a component made of a thermoplastic and component itself |
| JP2001009902A (en) | 1999-04-30 | 2001-01-16 | Piolax Inc | Production of bent resin hose |
| CN120307662B (en) * | 2025-06-17 | 2025-09-19 | 福建中科三净环保股份有限公司 | PPH purification tank curling welding machine and welding process |
-
1987
- 1987-04-02 JP JP8209287A patent/JPH0796261B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006283813A (en) * | 2005-03-31 | 2006-10-19 | Hitachi Metals Ltd | Elbow type EF joint and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63247020A (en) | 1988-10-13 |
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