JPS61215882A - Bellows pipe made of synthetic resin - Google Patents
Bellows pipe made of synthetic resinInfo
- Publication number
- JPS61215882A JPS61215882A JP60057762A JP5776285A JPS61215882A JP S61215882 A JPS61215882 A JP S61215882A JP 60057762 A JP60057762 A JP 60057762A JP 5776285 A JP5776285 A JP 5776285A JP S61215882 A JPS61215882 A JP S61215882A
- Authority
- JP
- Japan
- Prior art keywords
- bellows
- tube
- synthetic resin
- diameter
- angle
- 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
Links
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。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は９合成樹脂製の蛇腹管に関するもので。[Detailed description of the invention] [Industrial application field] The present invention relates to a bellows tube made of 9 synthetic resin.
さらに詳言すれば、より柔軟性のある合成樹脂製の蛇腹
細管の構造に関するものである。More specifically, it relates to the structure of a more flexible bellows tubule made of synthetic resin.
合成樹脂製の蛇腹管が種々の成形方法によって成形され
て数多くの分野で利用されているが、比較的径の小さい
蛇腹管を得るには、主にブロー成形によって成形してい
た。Synthetic resin bellows tubes are molded by various molding methods and used in many fields, but blow molding has mainly been used to obtain bellows tubes with a relatively small diameter.
すなわち、蛇腹管に成形される直線円筒形状をした合成
樹脂製の細管素材を、延伸変形成形可能な温度に加熱し
た状態で、蛇腹管成形用のブロー金型に組付け、この金
型に組付けた細管素材内に圧力流体を圧入し、もって細
管素材を蛇腹管に成形していた。That is, a straight cylindrical thin synthetic resin tube material to be formed into a bellows tube is heated to a temperature that allows stretching and deformation, and then assembled into a blow mold for forming a bellows tube, and then assembled into this mold. Pressure fluid was injected into the attached capillary material, thereby forming the capillary material into a bellows tube.
このようにして成形された蛇腹管は、比較的径の細いも
のを得ることができると共に、延伸変形を受けることに
よって機械的強度の大きいものとなっていた。The bellows tube formed in this manner can have a relatively small diameter, and also has high mechanical strength by being subjected to stretching deformation.
しかしながら、上記した従来の合成樹脂製蛇腹細管は、
ブロー成形と云う延伸変形を利用した成形方法により成
形されるものであるために、蛇腹部の山部分に延伸変形
が集中することになり、これがため充分な延伸変形量を
与えることができず。However, the conventional synthetic resin bellows tubule mentioned above,
Since it is molded by a molding method called blow molding that utilizes stretching deformation, the stretching deformation is concentrated at the peaks of the bellows part, and therefore a sufficient amount of stretching deformation cannot be applied.
蛇腹部の谷部分に対する山部分の高さを充分にとること
ができないと共に、この蛇腹部の山部分および谷部分を
形成する相隣り合った傾斜壁間の角度を小さくすること
ができず、山部分間のピッチが蛇腹管の径の割には大き
なものとならざるを得なかった。The height of the peaks relative to the valleys of the bellows section cannot be set to a sufficient height, and the angle between adjacent sloped walls forming the peaks and valleys of the bellows section cannot be made small. The pitch between the parts had to be large compared to the diameter of the bellows tube.
それゆえ、従来の合成樹脂製の蛇腹細管は、その太さの
割には柔軟性に不満のあるものとなっていた。Therefore, conventional bellows tubules made of synthetic resin have been unsatisfactory in flexibility considering their thickness.
本発明は、上記した従来例における問題点および不満を
解消し、充分に柔軟性のある合成樹脂製蛇腹管を得るこ
とを目的としたものである。The object of the present invention is to solve the problems and dissatisfaction with the conventional examples described above, and to obtain a bellows tube made of synthetic resin that is sufficiently flexible.
本発明による合成樹脂製の蛇腹管は、蛇腹部の山部分の
延伸量の割には隣り合った山部分間のピンチを充分に小
さくしたもので、以下本発明をその一実施例を示す図面
を参照しながら説明する。The synthetic resin bellows pipe according to the present invention is one in which the pinch between adjacent peaks is sufficiently small considering the amount of extension of the peaks of the bellows part. This will be explained with reference to.
本発明による合成樹脂製の蛇腹管ｌは、直線筒形状をし
た合成樹脂製の細管素材から成形されるものであって、
蛇腹部２の山部分３の頂点部の径延伸率が前記した細管
素材の径に対して１゜５〜２６５倍であると共に、谷部
分４の底部の径延伸率が前記した細管素材の径に対して
零倍であり、また蛇腹部２の山部分３および谷部分４を
形成する相隣り合った傾斜壁５間の角度である蛇腹角度
αが４０〜６０度となっている。The synthetic resin bellows tube l according to the present invention is molded from a straight cylindrical thin synthetic resin tube material, and includes:
The radial elongation rate at the apex of the peak portion 3 of the bellows portion 2 is 1.5 to 265 times the diameter of the capillary material described above, and the diametric elongation percentage at the bottom of the valley portion 4 is equal to the diameter of the capillary material described above. The bellows angle α, which is the angle between adjacent inclined walls 5 forming the peak portion 3 and valley portion 4 of the bellows portion 2, is 40 to 60 degrees.
蛇腹部２における山部分３の頂点部の径延伸率は、細管
素材の径の相違に対応して変化設定されるもので、ＩＩ
管素材の径が小さいほど、その延伸率は小さくなる。The diameter stretching ratio of the apex portion of the mountain portion 3 in the bellows portion 2 is set to vary according to the difference in the diameter of the thin tube material.
The smaller the diameter of the tube material, the lower its stretching ratio.
また、蛇腹角度αは、上記した山部分３の頂点部の延伸
率にほぼ従って決定されるものであって。Further, the bellows angle α is determined approximately according to the stretching ratio of the apex portion of the mountain portion 3 described above.
山部分３の頂点部の延伸率が大きいほどその角度が大き
くなる。The larger the stretching ratio of the apex portion of the mountain portion 3, the larger the angle thereof.
本発明による蛇腹管１は、上記の如く、山部分３の頂点
部の延伸率が充分に大きく、また蛇腹角度αが充分に小
さい、すなわち隣り合った山部分３間のピッチＰが山部
分３の高さの割には小さいので、各傾斜壁５は、その傾
斜姿勢を蛇腹管１の中心軸に沿った姿勢に近づける方向
に変形させ易くなり、これによってより高い柔軟性を発
揮することができることになる。As described above, the bellows pipe 1 according to the present invention has a sufficiently large elongation ratio at the apex of the peak portion 3 and a sufficiently small bellows angle α, that is, the pitch P between adjacent peak portions 3 is Since the height of each inclined wall 5 is small compared to its height, each inclined wall 5 can easily deform its inclined posture in a direction closer to the posture along the central axis of the bellows tube 1, thereby exhibiting higher flexibility. It will be possible.
このように２本発明による蛇腹管１は、山部分３の高さ
の割にはピッチＰが小さいものとなっているのであるが
、このような構造の蛇腹管ｌを細管素材から直接ブロー
成形により成形することは不可能である。As described above, the bellows pipe 1 according to the present invention has a small pitch P in comparison to the height of the mountain portion 3, but the bellows pipe l having such a structure can be directly blow-molded from a thin tube material. It is impossible to mold by
なぜならば、このような小さなピッチＰで蛇腹部２を成
形すべく細管素材をプロー成形により延伸させると、延
伸変形が集中する山部分３の頂点部附近の肉厚が極端に
薄くなってしまい、管体としての機械的強度を保持する
とかできなくなるからである。This is because, when the thin tube material is stretched by blow molding to form the bellows part 2 at such a small pitch P, the wall thickness near the apex of the peak part 3 where stretching deformation is concentrated becomes extremely thin. This is because it becomes impossible to maintain the mechanical strength of the tube.
この本発明による蛇腹管ｌを成形するのに最も有効な成
形方法を、第３図ないし第５図を参照しながら説明する
。The most effective molding method for molding the bellows pipe 1 according to the present invention will be explained with reference to FIGS. 3 to 5.
まず、細管素材を延伸成形できる温度に均一に加熱した
状態でバキューム成形金型に組付け、第３図に示した蛇
腹管形状をした中間成形品７にバキューム成形する。First, the thin tube material is uniformly heated to a temperature that allows stretch forming, and then assembled into a vacuum mold, and vacuum formed into an intermediate molded product 7 in the shape of a bellows tube as shown in FIG.
この中間成形品７は、バキューム金型への組付は部分と
なる端管部６を両端１０に位置させ、中央部分が蛇腹部
２に成形された形状となっている。This intermediate molded product 7 has a shape in which the end tube portions 6, which will be assembled into a vacuum mold, are located at both ends 10, and the central portion is molded into the bellows portion 2.
バキューム成形された中間成形品７における蛇腹部２の
蛇腹角度αは、細管素材の肉厚が小さい場合で６０度程
度であるが、細管素材の肉厚が大きい場合には９０度程
度となっており、山部分３の頂点部の延伸率は１．５〜
２．５倍よりもわずかに小さい値でほぼ１．３〜２．２
倍程度である。The bellows angle α of the bellows part 2 in the vacuum-formed intermediate molded product 7 is about 60 degrees when the wall thickness of the capillary material is small, but it is about 90 degrees when the wall thickness of the capillary material is large. The stretching ratio of the top part of the mountain part 3 is 1.5~
Approximately 1.3 to 2.2 with a value slightly smaller than 2.5 times
It's about double that.
このバキューム成形された中間成形品７の温度が変形可
能な温度範囲内にある状態で、第４図に示す如く、中間
成形品７に、特に中間成形品７の蛇腹部２に、中間成形
品７の軸心に沿って圧縮力Ｆを作用させて、この蛇腹部
２を圧縮変形させ。While the temperature of the vacuum-formed intermediate molded product 7 is within the deformable temperature range, as shown in FIG. A compressive force F is applied along the axis of the bellows part 2 to compress and deform the bellows part 2.
同時に冷却を施して本発明による蛇腹管１の成形を達成
する。At the same time, cooling is applied to achieve the formation of the bellows tube 1 according to the present invention.
圧縮変形された状態で冷却された蛇腹部２は。The bellows part 2 is cooled in a compressed and deformed state.
相隣り合った山部分３を接触させた状態にあるが。The adjacent peak parts 3 are in contact with each other.
圧縮力Ｆを取り去ると、山部分３の頂点部および谷部分
４の底部内に残留している内部応力の作用によって、隣
り合った山部分３を離れさせる方向に変形し、ついには
、第５図に示す如く、蛇腹角度αが４０〜６０度となっ
たところで安定する。When the compressive force F is removed, the internal stress remaining in the peaks of the peaks 3 and the bottoms of the valleys 4 causes the adjacent peaks 3 to deform in a direction that separates them, and finally the fifth As shown in the figure, it becomes stable when the bellows angle α reaches 40 to 60 degrees.
所で、蛇腹管１は、バキューム成形された中間成形品７
を圧縮変形させて成形されるものであるから、蛇腹部２
を形成する各傾斜壁−５の幅の値は。Incidentally, the bellows pipe 1 is an intermediate molded product 7 formed by vacuum molding.
Since it is formed by compressing and deforming the bellows part 2,
The value of the width of each inclined wall-5 forming the .
中間成形品７の時と蛇腹管１の時とで変化がなく。There is no difference between the intermediate molded product 7 and the bellows tube 1.
このため蛇腹角度αが小さくなった分だけ山部分３の頂
点部の延伸率は中間成形品７よりも蛇腹管の方が大きく
なる。For this reason, the elongation ratio of the apex portion of the mountain portion 3 becomes larger in the bellows tube than in the intermediate molded product 7 by the amount that the bellows angle α becomes smaller.
この上記した蛇腹管１の成形方法の場合、中間成形品７
をバキューム成形により成形するので。In the case of the method for forming the bellows tube 1 described above, the intermediate molded product 7
Because it is molded by vacuum molding.
従来の如く、ブロー成形手段を採用する場合に比べて、
細管素材内に挿入位置させるべき成形のための部材を全
く必要とせず、これがため極めて細い細管素材の蛇腹管
１への成形が可能となる。Compared to conventional blow molding methods,
There is no need for any forming member to be inserted into the capillary material, and as a result, it is possible to form an extremely thin capillary material into the bellows tube 1.
例えば、ブロー成形手段を利用した従来の細管素材によ
る蛇腹管の成形においては、成形できる細管素材の内径
の下限がせいぜい１０ｍ程度であったのに対し、バキュ
ーム成形手段を利用しての細管素材からの蛇腹管１の成
形においては、内径が０．５ｍの細管素材を蛇腹管ｌに
成形することができる。For example, in conventional molding of bellows tubes from thin tube materials using blow molding means, the lower limit of the inner diameter of the thin tube materials that can be formed is approximately 10 m at most, whereas from thin tube materials using vacuum forming means, In forming the bellows tube 1, a thin tube material with an inner diameter of 0.5 m can be formed into the bellows tube l.
次に、実際に成形された蛇腹管１の各部の実測寸法値を
記載する。Next, the actually measured dimensional values of each part of the bellows tube 1 that was actually molded will be described.
実施例の１゜
外径１ 、０ ａｍ 、内径０．５ｍｍ、肉厚０ 、５
ｍｍの細管素材で蛇腹管１を成形した際、成形された
蛇腹管１は、山部分３の外径２．２５ｍ、谷部分４の外
径１．０鶴、ピッチ（Ｐ）０゜３２ｔｖｒ、蛇腹角度（
α）４０度。Example 1° outer diameter 1,0 am, inner diameter 0.5 mm, wall thickness 0,5
When the bellows tube 1 is molded from a thin tube material of mm, the formed bellows tube 1 has an outer diameter of 2.25 m at the peak portion 3, an outer diameter of 1.0 mm at the valley portion 4, a pitch (P) of 0°32 tvr, Bellows angle (
α) 40 degrees.
そして山部分３の頂点部の肉厚が０．１０ｍであった。The thickness of the top portion of the mountain portion 3 was 0.10 m.
実施例の２゜
外径３゜２５ｆｌ、内径２．０鶴、肉厚１．２５鶴の細
管素材で蛇腹管１を成形した際、成形された蛇腹管１は
、山部分３の外径７．５ｎ＋、谷部分４の外径３．２５
鰭、ピンチ（Ｐ）３．２Ｄ、蛇腹角度（α） ６０度。When the bellows tube 1 was molded from the thin tube material of 2° outer diameter 3° 25fl, inner diameter 2.0 mm, and wall thickness 1.25 mm in the example, the molded bellows tube 1 had an outer diameter of 7 at the peak portion 3. .5n+, outer diameter of valley portion 4 3.25
Fin, pinch (P) 3.2D, bellows angle (α) 60 degrees.
そして山部分３の頂点部の肉厚が０．３５ｍであった。The wall thickness at the top of the mountain portion 3 was 0.35 m.
以上の説明から明らかな如く１本発明による合成樹脂製
蛇腹管は、極めて柔軟性に富んだものとなり、それゆえ
狭い空間内で自在にかつ小さな曲率半径で湾曲変形しな
ければならないスプレー容器における吸上げ管等として
極めて有効に使用することができ、また充分に細い寸法
で成形されることができるので、より狭い空間内での使
用に有利である等優れた効果を発揮するものである。As is clear from the above description, the synthetic resin bellows tube according to the present invention is extremely flexible, and therefore is used in spray containers that must be freely curved and deformed within a narrow space with a small radius of curvature. It can be used extremely effectively as a riser pipe, etc., and can be formed into sufficiently thin dimensions, so it exhibits excellent effects such as being advantageous for use in narrower spaces.
第１図は１本発明による蛇腹管の一実施例を示す全体外
観斜視図である。
第２図は１本発明による蛇腹管の要部拡大断面図である
。
第３図ないし第５図は２本発明による蛇腹管の成形方法
の一例を示すもので、第３図はバキューム成形された中
間成形品の正面図を、第４図は中間成形品を圧縮変形さ
せると共に、冷却している状態を、そして第５図は成形
された蛇腹管の正面図である。
符号の説明
１ｇ蛇腹管、２；蛇腹部、３；山部分、４；各部分、５
；斜視壁、６：端管部、７；中間成形品。
Ｐ：ピッチ、α；蛇腹角度。
う／層FIG. 1 is an overall external perspective view showing an embodiment of a bellows tube according to the present invention. FIG. 2 is an enlarged sectional view of a main part of a bellows tube according to the present invention. Figures 3 to 5 show an example of the method for forming a bellows tube according to the present invention. Figure 3 is a front view of a vacuum-formed intermediate molded product, and Figure 4 is a compressive deformation of the intermediate molded product. FIG. 5 is a front view of the molded bellows tube while cooling it. Explanation of symbols 1g Bellows tube, 2; Bellows part, 3; Mountain part, 4; Each part, 5
; Perspective wall, 6: End pipe portion, 7: Intermediate molded product. P: pitch, α: bellows angle. U/layer
Claims (1)
腹管であって、蛇腹部（２）の山部分（３）の頂点部の
径延伸率が１．５〜２．５倍で谷部分（４）の底部の径
延伸率が０倍であり、前記蛇腹部（２）の山部分（３）
および谷部分（４）を形成する相隣り合った傾斜壁（５
）間の角度が４０〜６０度である合成樹脂製蛇腹管。It is a bellows tube molded from a synthetic resin thin tube material having a straight cylindrical shape, and the diameter stretch ratio of the top part of the peak part (3) of the bellows part (2) is 1.5 to 2.5 times, and the valley part is (4) The diameter stretching ratio of the bottom part is 0 times, and the mountain part (3) of the bellows part (2)
and adjacent inclined walls (5) forming a valley portion (4).
) A synthetic resin bellows tube with an angle of 40 to 60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60057762A JPH0643878B2 (en) | 1985-03-22 | 1985-03-22 | Synthetic resin bellows tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60057762A JPH0643878B2 (en) | 1985-03-22 | 1985-03-22 | Synthetic resin bellows tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61215882A true JPS61215882A (en) | 1986-09-25 |
| JPH0643878B2 JPH0643878B2 (en) | 1994-06-08 |
Family
ID=13064887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60057762A Expired - Fee Related JPH0643878B2 (en) | 1985-03-22 | 1985-03-22 | Synthetic resin bellows tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0643878B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2299520A (en) * | 1940-02-28 | 1942-10-20 | Mine Safety Appliances Co | Method of making extensible conduit |
| JPS5763176U (en) * | 1980-09-30 | 1982-04-15 | ||
| JPS5990662U (en) * | 1982-12-09 | 1984-06-19 | タイガ−スポリマ−株式会社 | elastic dust cover |
-
1985
- 1985-03-22 JP JP60057762A patent/JPH0643878B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2299520A (en) * | 1940-02-28 | 1942-10-20 | Mine Safety Appliances Co | Method of making extensible conduit |
| JPS5763176U (en) * | 1980-09-30 | 1982-04-15 | ||
| JPS5990662U (en) * | 1982-12-09 | 1984-06-19 | タイガ−スポリマ−株式会社 | elastic dust cover |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0643878B2 (en) | 1994-06-08 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |