JPH0885149A - Molding of curved pipe - Google Patents
Molding of curved pipeInfo
- Publication number
- JPH0885149A JPH0885149A JP22438594A JP22438594A JPH0885149A JP H0885149 A JPH0885149 A JP H0885149A JP 22438594 A JP22438594 A JP 22438594A JP 22438594 A JP22438594 A JP 22438594A JP H0885149 A JPH0885149 A JP H0885149A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- resin pipe
- curved
- pipe
- curved surface
- 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
Links
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、合成樹脂管を所定の曲
率に弯曲成形する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for bending a synthetic resin pipe into a predetermined curvature.
【０００２】[0002]
【従来の技術】塩化ビニル樹脂等からなる合成樹脂管を
所定の曲率に弯曲成形する場合、従来は合成樹脂管を加
熱軟化させてから管内に砂を充填し、ベンダー等で所定
の曲率に弯曲成形していた。2. Description of the Related Art Conventionally, when a synthetic resin pipe made of vinyl chloride resin or the like is curved and formed to a predetermined curvature, conventionally, the synthetic resin pipe is heated and softened, then the pipe is filled with sand, and then bent by a bender or the like to the predetermined curvature. It was molded.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、この従
来法の場合には、合成樹脂管内に砂を充填したり、成形
後に砂を排出して管内を清掃する作業に手間がかかると
いう問題があった。また、合成樹脂管を弯曲させたとき
に、管内に充填した砂が位置ずれすることによって管が
偏平状に変形し易いという問題もあった。本発明はかか
る課題を解決したものであって、合成樹脂管を簡単に弯
曲成形できると共に、真円を維持しつつ所定の曲率に弯
曲させることができる成形法を提供するものである。However, in the case of this conventional method, there is a problem that it takes time to fill the synthetic resin pipe with sand or to discharge the sand after molding to clean the pipe. . In addition, when the synthetic resin pipe is bent, the sand filled in the pipe is displaced, so that the pipe is easily deformed into a flat shape. The present invention has solved the above problems and provides a molding method capable of easily bending a synthetic resin pipe and bending the synthetic resin pipe to a predetermined curvature while maintaining a perfect circle.
【０００４】[0004]
【課題を解決するための手段】本発明は、加熱軟化した
合成樹脂管内に弾性部材を嵌挿すると共に、該合成樹脂
管の一端部を所定の弯曲面を有する金型に沿わせてクラ
ンプで把持し、次いで合成樹脂管を金型の弯曲面に沿わ
せてローラで押圧しつつ所定の曲率に弯曲させることを
特徴とする。According to the present invention, an elastic member is inserted into a synthetic resin pipe that has been softened by heating, and one end of the synthetic resin pipe is clamped along a mold having a predetermined curved surface. It is characterized in that it is gripped, and then the synthetic resin pipe is bent along a curved surface of the mold while being pressed by a roller to be curved to a predetermined curvature.
【０００５】[0005]
【作用】弾性部材を合成樹脂管内に嵌挿するので、管を
弯曲させたとき偏平状に変形しない。また、合成樹脂管
を所定の弯曲面を有する金型に沿わせてローラで押圧す
るだけで、所定の曲率に弯曲させることができる。Since the elastic member is fitted into the synthetic resin pipe, it does not deform into a flat shape when the pipe is bent. Further, it is possible to bend the synthetic resin tube to a predetermined curvature by simply pressing it with a roller along a mold having a predetermined curved surface.
【０００６】[0006]
【実施例】以下、本発明の実施例を図面にて詳細に説明
する。図１は合成樹脂管の加熱工程を示す説明図、図２
は合成樹脂管を曲げ加工装置にセットした状態を示す正
面図、図３は合成樹脂管を弯曲成形した状態を示す正面
図、図４は合成樹脂管の弯曲工程を示す要部断面図であ
る。図中の符号１は硬質塩化ビニル樹脂等の合成樹脂管
であって、その一端部には拡径した受口が設けられてい
る。Ａは熱風加熱、赤外線加熱等からなる加熱炉、Ｂは
曲げ加工装置である。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is an explanatory view showing a heating step of a synthetic resin pipe, FIG.
Is a front view showing a state in which the synthetic resin pipe is set in a bending apparatus, FIG. 3 is a front view showing a state in which the synthetic resin pipe is bent, and FIG. 4 is a cross-sectional view of a main part showing a bending process of the synthetic resin pipe. . Reference numeral 1 in the drawing is a synthetic resin pipe such as a hard vinyl chloride resin, and an expanded diameter receiving port is provided at one end thereof. A is a heating furnace including hot air heating, infrared heating, and the like, and B is a bending apparatus.
【０００７】本発明では、まず合成樹脂管１を加熱炉Ａ
内に搬入し、受口１１を除く所定部分を加熱軟化させ
る。このとき、合成樹脂管１の加熱時間、温度等は合成
樹脂管１の径寸法、肉厚等に応じて適宜設定することが
できる。そこで、この合成樹脂管１を曲げ加工装置Ｂに
セットし、所定の曲率に弯曲成形する。In the present invention, first, the synthetic resin tube 1 is placed in the heating furnace A.
It is carried in and a predetermined portion except the receiving port 11 is heated and softened. At this time, the heating time, temperature, etc. of the synthetic resin tube 1 can be appropriately set according to the diameter dimension, wall thickness, etc. of the synthetic resin tube 1. Therefore, the synthetic resin pipe 1 is set in the bending apparatus B and is bent to have a predetermined curvature.
【０００８】曲げ加工装置Ｂは、金型２と回転アーム３
からなっている。金型２には所定の曲率半径Ｒで弯曲し
た弯曲面２１が形成されており、該弯曲面２１の曲率中
心Ｏにアーム３の一端部が回転可能に軸支され、その他
端部にローラ４が軸支されている。前記弯曲面２１及び
ローラ４には、図４に示した如く合成樹脂管１の外径と
ほぼ等しい円弧面が形成されており、アーム３を回転さ
せたとき弯曲面２１とローラ４の円弧面４１との間で合
成樹脂管１を挾持しつつ弯曲させることができるように
なっている。The bending apparatus B comprises a mold 2 and a rotary arm 3.
It consists of The mold 2 is formed with a curved surface 21 curved with a predetermined radius of curvature R. One end of the arm 3 is rotatably supported at the center of curvature O of the curved surface 21 and the roller 4 is provided at the other end. Is pivotally supported. As shown in FIG. 4, the curved surface 21 and the roller 4 are formed with a circular arc surface that is substantially equal to the outer diameter of the synthetic resin pipe 1, and when the arm 3 is rotated, the curved surface 21 and the circular surface of the roller 4 are formed. The synthetic resin pipe 1 can be bent while being held between 41 and 41.
【０００９】金型２の弯曲面２１の上端側にはクランプ
５が設けられており、該クランプ５の下部片５１と上部
片５２との間で合成樹脂管１の受口１１を把持できるよ
うになっている。また、クランプ５と相対する位置に弾
性部材６が配設されており、該弾性部材６を前進・後退
させる移動装置７が設けられている。そして、ゴム等か
らなる弾性部材６の外径は合成樹脂管１の内径とほぼ同
径に形成されている。A clamp 5 is provided on the upper end side of the curved surface 21 of the mold 2 so that the receptacle 11 of the synthetic resin pipe 1 can be held between the lower piece 51 and the upper piece 52 of the clamp 5. It has become. Further, an elastic member 6 is arranged at a position facing the clamp 5, and a moving device 7 for moving the elastic member 6 forward and backward is provided. The elastic member 6 made of rubber or the like has an outer diameter substantially equal to the inner diameter of the synthetic resin pipe 1.
【００１０】本発明では、加熱軟化した合成樹脂管１を
金型２の弯曲面２１とローラ４との間に挿通して受口１
１をクランプ５で把持する。そこで、弾性部材６を前進
させ、合成樹脂管１内に嵌挿してからアーム３を回転さ
せる。すると、ローラ４が合成樹脂管１を弯曲面２１に
押付けて所定の曲率に弯曲成形する。最後に、弯曲した
合成樹脂管１の外周面に冷却装置８から冷風あるいは冷
水を散布すると、固化して所定の曲率に弯曲した合成樹
脂管１が得られる。In the present invention, the heat-softened synthetic resin tube 1 is inserted between the curved surface 21 of the mold 2 and the roller 4 to receive the receptacle 1.
1 is clamped by the clamp 5. Therefore, the elastic member 6 is moved forward, fitted into the synthetic resin pipe 1, and then the arm 3 is rotated. Then, the roller 4 presses the synthetic resin pipe 1 against the curved surface 21 and bends it into a predetermined curvature. Finally, when cold air or cold water is sprayed from the cooling device 8 onto the outer peripheral surface of the curved synthetic resin tube 1, the synthetic resin tube 1 is solidified and curved to a predetermined curvature.
【００１１】[0011]
【発明の効果】以上詳述した如く、本発明は弾性部材を
合成樹脂管内に嵌挿してから弯曲させるので、管が偏平
状に変形することなく、断面真円状の弯曲管を簡単に成
形することができる。As described above in detail, according to the present invention, since the elastic member is inserted into the synthetic resin pipe and then bent, the bent pipe having a perfect circular cross section can be easily formed without deforming the pipe into a flat shape. can do.
【図１】図１は本発明の加熱工程を示す説明図である。FIG. 1 is an explanatory view showing a heating process of the present invention.
【図２】図２は本発明の曲げ加工装置に合成樹脂管をセ
ットした状態を示す正面図である。FIG. 2 is a front view showing a state in which a synthetic resin pipe is set in the bending apparatus of the present invention.
【図３】図３は本発明の合成樹脂管を弯曲成形した状態
を示す正面図である。FIG. 3 is a front view showing a state where the synthetic resin pipe of the present invention is curved and formed.
【図４】図４は本発明の合成樹脂管の弯曲工程を示す要
部断面図である。FIG. 4 is a sectional view of an essential part showing a bending step of the synthetic resin pipe of the present invention.
１ 合成樹脂管 ２ 金型 ２１ 弯曲面 ３ アーム ４ ローラ ５ クランプ ６ 弾性部材 Ａ 加熱炉 Ｂ 曲げ加工装置 1 Synthetic Resin Tube 2 Mold 21 Curved Surface 3 Arm 4 Roller 5 Clamp 6 Elastic Member A Heating Furnace B Bending Machine
Claims (1)
嵌挿すると共に、該合成樹脂管の一端部を所定の弯曲面
を有する金型に沿わせてクランプで把持し、次いで合成
樹脂管を金型の弯曲面に沿わせてローラで押圧しつつ所
定の曲率に弯曲させることを特徴とする弯曲管の成形
法。1. An elastic member is inserted into a heat-softened synthetic resin pipe, and one end of the synthetic resin pipe is clamped along a mold having a predetermined curved surface, and then the synthetic resin pipe is attached. A method for forming a curved pipe, characterized by bending along a curved curved surface of a mold with a roller to bend it to a predetermined curvature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22438594A JPH0885149A (en) | 1994-09-20 | 1994-09-20 | Molding of curved pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22438594A JPH0885149A (en) | 1994-09-20 | 1994-09-20 | Molding of curved pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0885149A true JPH0885149A (en) | 1996-04-02 |
Family
ID=16812926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22438594A Pending JPH0885149A (en) | 1994-09-20 | 1994-09-20 | Molding of curved pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0885149A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006043316A1 (en) * | 2004-10-20 | 2006-04-27 | Hayakawa Seisakusho Co., Ltd. | High speed bending method of resin tube and three-dimensional bending die employing that method |
| WO2006094361A1 (en) * | 2005-03-11 | 2006-09-14 | Vinidex Pty Limited | Socketing of pipe |
| JP2007223043A (en) * | 2004-10-20 | 2007-09-06 | Hayakawa Seisakusho:Kk | High-speed bending method for resin tube and three-dimensional bending mold using the method |
| WO2021015214A1 (en) * | 2019-07-23 | 2021-01-28 | キャニヨン株式会社 | Method for processing suction tube of pump dispenser |
-
1994
- 1994-09-20 JP JP22438594A patent/JPH0885149A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006043316A1 (en) * | 2004-10-20 | 2006-04-27 | Hayakawa Seisakusho Co., Ltd. | High speed bending method of resin tube and three-dimensional bending die employing that method |
| JP2007223043A (en) * | 2004-10-20 | 2007-09-06 | Hayakawa Seisakusho:Kk | High-speed bending method for resin tube and three-dimensional bending mold using the method |
| JP4642629B2 (en) * | 2004-10-20 | 2011-03-02 | 株式会社早川製作所 | High-speed bending method of resin tube and three-dimensional bending mold used in this method |
| KR101112503B1 (en) * | 2004-10-20 | 2012-02-24 | 가부시키가이샤 하야카와 세이사쿠쇼 | High speed bending method of resin tube and three-dimensional bending die employing that method |
| WO2006094361A1 (en) * | 2005-03-11 | 2006-09-14 | Vinidex Pty Limited | Socketing of pipe |
| US7776248B2 (en) | 2005-03-11 | 2010-08-17 | Vinidex Pty Limited | Socketing of pipe |
| WO2021015214A1 (en) * | 2019-07-23 | 2021-01-28 | キャニヨン株式会社 | Method for processing suction tube of pump dispenser |
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Legal Events
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Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20040420 |
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