JPH0564099B2 - - Google Patents
Info
- Publication number
- JPH0564099B2 JPH0564099B2 JP61071722A JP7172286A JPH0564099B2 JP H0564099 B2 JPH0564099 B2 JP H0564099B2 JP 61071722 A JP61071722 A JP 61071722A JP 7172286 A JP7172286 A JP 7172286A JP H0564099 B2 JPH0564099 B2 JP H0564099B2
- Authority
- JP
- Japan
- Prior art keywords
- wire material
- synthetic resin
- cylindrical portion
- strip
- peripheral wall
- 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
- 239000000463 material Substances 0.000 claims description 77
- 229920003002 synthetic resin Polymers 0.000 claims description 28
- 239000000057 synthetic resin Substances 0.000 claims description 28
- 230000002093 peripheral effect Effects 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 description 5
- 230000001154 acute effect Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は螺旋状の補強条を備えた合成樹脂管の
製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a synthetic resin pipe provided with spiral reinforcing strips.
（従来の技術）
一般にこの種の合成樹脂管は、半溶融状の合成
樹脂製条素材と、別途成形された半溶融状の合成
樹脂製線素材とをそれぞれ異なる位置から成形用
主軸上に供給して、螺旋状に巻付けると共に、こ
の巻付け時、条素材の側縁部を順次重ねて溶着
し、所謂条素材をして周壁を成形し、かつこの周
壁内側に前記線素材を溶着して製造されていた。(Prior art) Generally, in this type of synthetic resin pipe, a semi-molten synthetic resin strip material and a separately molded semi-molten synthetic resin wire material are fed onto a molding spindle from different positions. Then, it is wound spirally, and at the time of this winding, the side edges of the wire material are successively overlapped and welded to form a peripheral wall of the so-called wire material, and the wire material is welded to the inside of this peripheral wall. It was manufactured by
（発明が解決しようとする問題点）
処で上記の如き方法により製造された合成樹脂
管は、条素材と線素材とが溶着されているので、
その使用時第１１，１２図に示す如く条素材から
なる周壁１１と線素材からなる補強条１２との溶
着端近く、即ちＡ部が繰り返し鋭角的に屈曲さ
れ、かつＡ部に応力集中が生じ、このＡ部におい
て破断するごとき問題があつた。(Problems to be Solved by the Invention) However, since the synthetic resin pipe manufactured by the above method has a strip material and a wire material welded together,
During use, as shown in FIGS. 11 and 12, the vicinity of the welded end of the peripheral wall 11 made of a strip material and the reinforcing strip 12 made of a wire material, that is, the part A, is repeatedly bent at an acute angle, and stress concentration occurs in the part A. However, there was a problem in which the A part broke.
（問題点を解決するための手段）
本発明は上記した如き問題点を解決すべく発明
したもので、円筒状の周壁に補強条を螺旋状に設
けてなる合成樹脂管であつて、前記周壁に螺旋状
の中空筒部を一体的に形成して、該筒部内に補強
条となる線素材を挿嵌保持させ、かつこの線素材
を筒部に対し非溶着性の合成樹脂により形成し
て、線素材を筒部内で相対遊動可能としたことに
特徴を有する合成樹脂管、及び半溶融状の合成樹
脂製条素材と、これとは別の合成樹脂製線素材と
を成形用主軸に螺旋状に巻付けて、周壁に螺旋状
の補強条をもつ合成樹脂管を製造する方法であつ
て、前記条素材を中空筒部を該筒部から延びる板
部とをもつ断面形状とし、この筒部内に前記線素
材を押出して、前記条素材と線素材とを成形用主
軸に同時供給により螺旋状に巻付ける一方、前記
線素材として条素材に対し非溶着性の合成樹脂を
用いたことに特徴を有する合成樹脂管の製造方法
に係るものである。(Means for Solving the Problems) The present invention was invented in order to solve the above-mentioned problems, and is a synthetic resin pipe in which reinforcing strips are spirally provided on a cylindrical peripheral wall. A spiral hollow cylindrical portion is integrally formed in the cylindrical portion, a wire material serving as a reinforcing strip is inserted and retained in the cylindrical portion, and this wire material is made of a synthetic resin that does not adhere to the cylindrical portion. , a synthetic resin pipe characterized by allowing the wire material to move relative to each other within the cylindrical portion, and a semi-molten synthetic resin wire material and a different synthetic resin wire material spirally formed around a main shaft for molding. A method of manufacturing a synthetic resin pipe having a spiral reinforcing strip on the peripheral wall by winding the material into a shape, the strip material having a cross-sectional shape having a hollow cylindrical portion and a plate portion extending from the cylindrical portion; The wire material is extruded into the molding section, and the wire material and the wire material are simultaneously supplied to a molding main shaft and wound spirally, while the wire material is made of a synthetic resin that is non-weldable to the wire material. The present invention relates to a method for manufacturing a synthetic resin pipe having characteristics.
（作用）
上記手段によれば、条素材により形成される周
壁に対し、線素材により形成される補強条が非接
着状態であるので、換言すれば条素材の中空筒部
と、該筒部内の線素材とが相対遊動可能であるか
ら、管屈曲時における周壁の軸線方向伸び（屈曲
内側が圧縮、屈曲外側が伸長）に対し、筒部の径
方向伸びが線素材により阻害されるようなことな
く自由に許容され、所謂筒部が略楕円形等に変形
するのであつて、前記周壁を構成する板部は筒部
から滑らかな曲面を介して延びることになり、従
つて条素材における筒部と板部との境界部分が繰
り返し鋭角的に屈曲されるようなことがなく、ま
た応力が集中するようなことがないのである。(Function) According to the above means, the reinforcing strip formed by the wire material is not bonded to the peripheral wall formed by the strip material. Since the wire material can move relative to the wire material, the wire material does not inhibit the radial elongation of the tube while the circumferential wall expands in the axial direction when the tube is bent (compression on the inside of the bend, expansion on the outside of the bend). The so-called cylindrical portion deforms into a substantially elliptical shape, etc., and the plate portion constituting the peripheral wall extends from the cylindrical portion via a smooth curved surface. This prevents the boundary between the plate and the plate from being repeatedly bent at acute angles, and stress does not concentrate there.
（実施例）
以下本発明の実施例を図面に基づいて詳細に説
明する。(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.
第１図は本発明方法により製造された流し台用
ホースなどとして用いられる合成樹脂管を示すも
ので、図において１１は円筒状の周壁、１２は周
壁内側に設けた螺旋状の補強条である。 FIG. 1 shows a synthetic resin pipe manufactured by the method of the present invention and used as a sink hose, etc. In the figure, 11 is a cylindrical peripheral wall, and 12 is a spiral reinforcing strip provided inside the peripheral wall.
前記周壁１１は、例えば軟質塩化ビニール樹脂
からなる条素材ａを用い、該条素材ａを後記する
如く成形用主軸３に対し螺旋状に巻付け、かつこ
の巻付け時条素材ａの側縁部を順次重ねて溶着す
ることにより、円筒状に形成されており、また前
記補強条１２は、例えば他の樹脂に対し非溶着性
のポリエチレンや、ポリプロピレンなどオレフイ
ン系樹脂からなる線素材ｂによつて形成されるも
ので、この線素材ｂは、前記条素材ａに一体的に
形成された中空筒部a1内に挿嵌され、これにより
線素材ｂが条素材ａの筒部a1内に相対遊動可能に
保持されるのである。 The peripheral wall 11 is constructed by using a strip material a made of, for example, soft vinyl chloride resin, and winding the strip material a helically around the molding main shaft 3 as described later, and at the time of winding, the side edges of the strip material a. The reinforcing strip 12 is made of a wire material b made of an olefin resin such as polyethylene or polypropylene, which is non-weldable to other resins. This wire material b is inserted into a hollow cylindrical portion a 1 formed integrally with the strip material a, and thereby the wire material b is inserted into the cylindrical portion a 1 of the strip material a. They are held so that they can move relative to each other.
しかして前記条素材ａ及び線素材ｂは、筒状成
形部２１と該成形部２１に続く板状成形部２２、
並びに前記筒状成形部２１の中心に独立して形成
した線状成形部２３とをもつ成形用ダイ２により
それぞれ成形されるもので、先ず成形用ダイ２の
筒状成形部２１と板状成形部２２とから溶融した
軟質塩化ビニール樹脂を押出して、中空筒部a1と
該筒部a1から一体的に延びる板部a2とをもつ半溶
融状の条素材ａを形成する。またこれと同時に成
形用ダイ２の線状成形部２３から溶融したオレフ
イン系樹脂を押出して、半溶融状の線素材ｂを成
形する。この線素材ｂは前記条素材ａの筒部a1内
に押出成形されている。 Therefore, the strip material a and the wire material b include a cylindrical molded part 21, a plate-shaped molded part 22 following the molded part 21,
and a linear forming part 23 formed independently at the center of the cylindrical forming part 21. First, the cylindrical forming part 21 of the forming die 2 and the plate forming part 23 are formed. The molten soft vinyl chloride resin is extruded from the section 22 to form a semi-molten strip material a having a hollow cylindrical section a 1 and a plate section a 2 integrally extending from the cylindrical section a 1 . At the same time, the molten olefin resin is extruded from the linear forming part 23 of the forming die 2 to form a semi-molten wire material b. This wire material b is extruded into the cylindrical portion a1 of the strip material a.
次いで上記の如く成形用ダイ２から押出成形さ
れた条素材ａと線素材ｂとを成形用主軸３に供給
して、螺旋状に巻付ける。このとき条素材ａにお
ける板部a2の遊端側縁部を筒部a1上に順次重ねて
溶着する。 Next, the strip material a and the wire material b extruded from the forming die 2 as described above are supplied to the forming main shaft 3 and wound spirally. At this time, the free end side edges of the plate portions a2 of the strip material a are successively overlapped and welded onto the cylindrical portion a1 .
前記成形用主軸３は、例えば第８図に示す如く
傾斜した多数のコロ３１をもつ外筒３２を備え、
主軸３の回動による各コロ３１の回動により、上
記した如く供給された条素材ａと線素材ｂは順次
引取られ、条素材ａは円筒状の周壁１１として、
線素材ｂは螺旋状の補強壁ｂとしてそれぞれ成形
され、所謂周壁１１に螺旋状の補強条１２が設け
られた合成樹脂管として仕上げられるのである。 The forming main shaft 3 includes an outer cylinder 32 having a large number of inclined rollers 31, as shown in FIG. 8, for example.
By the rotation of each roller 31 caused by the rotation of the main shaft 3, the strip material a and the wire material b supplied as described above are taken up one after another, and the strip material a becomes a cylindrical peripheral wall 11.
The wire material b is each formed into a spiral reinforcing wall b, and is finished as a synthetic resin tube having a so-called peripheral wall 11 provided with a spiral reinforcing strip 12.
なお本発明は上記した如き製造方法に限定され
るものではなく、適宜改良、あるいは設定変更を
加え得るものである。 Note that the present invention is not limited to the manufacturing method described above, but may be improved or changed as appropriate.
例えば第４図に示す如く条素材ａにおける板部
a2の長さを、条素材ａを成形用主軸３に巻付ける
螺旋ピツチの２倍以上として、その巻付け時に板
部a2が２個またはそれ以上の筒部a1に重合溶着す
べくしてもよい。 For example, as shown in FIG.
The length of a 2 is made to be at least twice the spiral pitch at which the strip material a is wound around the main shaft 3 for forming, so that the plate part a 2 is polymerized and welded to two or more cylindrical parts a 1 during the winding. It's okay.
また第５，６図に示す如く条素材ａにおける板
部a2が筒部a1の両側方、特に接線方向両側に延出
し、成形時管内壁が平滑になるごとくしてもよ
い。 Alternatively, as shown in FIGS. 5 and 6, the plate portion a2 of the strip material a may extend on both sides of the cylindrical portion a1 , particularly on both sides in the tangential direction, so that the inner wall of the tube becomes smooth during molding.
また第７図に示す如く条素材ａの筒部と２個形
成してもよい。 Further, as shown in FIG. 7, two pieces may be formed with the cylindrical portion of the strip material a.
さらに図示してはいないが、線素材ｂを条素材
ａの筒部a1内に押出成形するとき、この線素材ｂ
と共に被覆電線を押出すごとくしてもよく、また
線素材ｂは予め別に成形し、換言すれば半溶状に
押出成形しなくてもよい。 Furthermore, although not shown in the figure, when the wire material b is extruded into the cylindrical portion a1 of the strip material a, this wire material b
In addition, the wire material b may be formed separately in advance, and in other words, the wire material b may not be extruded into a semi-molten state.
以上の如き方法により製造された合成樹脂管
は、条素材ａからなる円筒状の周壁１１に線素材
ｂからなる螺旋状の補強条１１を、条素材ａにお
ける筒部a1への線素材ｂの挿嵌をして非溶着状に
保持され、換言すれば条素材ａの筒部a1と、該筒
部a1内の線素材ｂとが相対遊動可能になり、管屈
曲時における周壁１１の軸線方向伸び（屈曲内側
では圧縮、屈曲外側では伸長）に対し、第３図に
示す如く筒部a1の径方向伸が線素材ｂにより阻害
されるようなことなく自由に許容されて楕円形等
に変形するのである。従つて前記筒部a1から一体
的に伸びる板部a2が筒部a1に対し鋭角的に屈曲さ
れるような恐れがなく、所謂滑らかな曲面を介し
て延びることになり、またこの筒部a1と板部a2と
の境界部分において応力集中が生じるようなこと
がないのである。 The synthetic resin pipe manufactured by the method described above has a spiral reinforcing strip 11 made of a wire material b on a cylindrical peripheral wall 11 made of a strip material a, and a wire material b to a cylindrical portion a 1 of the strip material a. In other words, the cylindrical portion a 1 of the strip material a and the wire material b within the cylindrical portion a 1 are able to move relative to each other, and the peripheral wall 11 when the tube is bent. With respect to the axial elongation (compression on the inside of the bend, expansion on the outside of the bend), the radial elongation of the cylinder part a1 is freely allowed without being inhibited by the wire material b, as shown in Fig. 3, resulting in an elliptical shape. It transforms into shapes, etc. Therefore, there is no danger that the plate part a2 , which extends integrally from the cylinder part a1 , will be bent at an acute angle with respect to the cylinder part a1 , and will extend through a so-called smooth curved surface. This prevents stress concentration from occurring at the boundary between section a1 and plate section a2 .
（発明の効果）
以上説明した如く本発明によるときは、螺旋状
の補強条をもつ合成樹脂管を安価にかつ簡単容易
に製造することができ、それでいてその耐強度を
高め、特に屈曲時における周壁の補強条保持部近
くでの破断を確実に防止せしめ得るに至つたので
ある。(Effects of the Invention) As explained above, according to the present invention, a synthetic resin pipe having spiral reinforcing stripes can be manufactured easily and inexpensively, and the strength of the pipe can be increased, especially when the peripheral wall is bent. This has made it possible to reliably prevent breakage near the reinforcing strip holding portion.
第１図は本発明方法により製造された合成樹脂
管の一部切欠正面図、第２図は同合成樹脂管を製
造するための素材拡大断面図、第３図は同合成樹
脂管の屈曲時における部分縦断面図、第４図乃至
第７図は別の実施例を示すもので、第４図及び第
６図は部分縦断面図、第５図及び第７図は素材断
面図、第８図は製造装置の一部切欠平面図、第９
図はその要部横断面図、第１０図は同正面図、第
１１図は従来品の部分縦断面図、第１２図はその
屈曲時における部分縦断面図である。
ａ……条素材、a1……中空筒部、a2……板部、
ｂ……線素材、１１……周壁、１２……補強条。
Fig. 1 is a partially cutaway front view of a synthetic resin pipe manufactured by the method of the present invention, Fig. 2 is an enlarged sectional view of the material for manufacturing the synthetic resin pipe, and Fig. 3 is a view of the synthetic resin pipe when bent. FIGS. 4 to 7 show another embodiment. FIGS. 4 and 6 are partial longitudinal sectional views, FIGS. 5 and 7 are material sectional views, and FIG. The figure is a partially cutaway plan view of the manufacturing equipment.
10 is a front view of the same, FIG. 11 is a partial longitudinal sectional view of the conventional product, and FIG. 12 is a partial longitudinal sectional view of the conventional product when it is bent. a...Strip material, a1 ...Hollow cylinder part, a2 ...Plate part,
b...Wire material, 11...Peripheral wall, 12...Reinforcement strip.
Claims (1)
合成樹脂管であつて、前記周壁に螺旋状の中空筒
部を一体的に形成して、該筒部内に補強条となる
線素材を挿嵌保持させ、かつこの線素材を筒部に
対し非溶着性の合成樹脂により形成して、線素材
を筒部内で相対遊動可能としたことを特徴とする
合成樹脂管。 ２ 半溶融状の合成樹脂製条素材と、これとは別
の合成樹脂製線素材とを成形用主軸に螺旋状に巻
付けて、周壁に螺旋状の補強条をもつ合成樹脂管
を製造する方法であつて、前記条素材を中空筒部
と該筒部から延びる板部とをもつ断面形状とし、
この筒部内に前記線素材を押出して、前記条素材
と線素材とを成形用主軸に同時供給により螺旋状
に巻付ける一方、前記線素材として条素材に対し
非溶着性の合成樹脂を用いたことを特徴とする合
成樹脂管の製造方法。[Scope of Claims] 1. A synthetic resin pipe in which reinforcing strips are spirally provided on a cylindrical peripheral wall, wherein a spiral hollow cylindrical portion is integrally formed on the peripheral wall, and reinforcing strips are provided within the cylindrical portion. A synthetic resin tube characterized in that a wire material serving as a strip is inserted and held, and the wire material is made of a synthetic resin that does not adhere to the cylindrical portion, so that the wire material can move relative to the cylindrical portion. . 2. A semi-molten synthetic resin wire material and a different synthetic resin wire material are wound helically around a molding main shaft to produce a synthetic resin pipe with a spiral reinforcing strip on the peripheral wall. The method includes forming the strip material into a cross-sectional shape having a hollow cylindrical portion and a plate portion extending from the cylindrical portion,
The wire material is extruded into this cylindrical portion, and the wire material and the wire material are simultaneously supplied to a forming main shaft and wound in a spiral shape, while the wire material is made of a synthetic resin that does not weld to the wire material. A method for manufacturing a synthetic resin pipe, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61071722A JPS62227633A (en) | 1986-03-28 | 1986-03-28 | Synthetic resin tube and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61071722A JPS62227633A (en) | 1986-03-28 | 1986-03-28 | Synthetic resin tube and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62227633A JPS62227633A (en) | 1987-10-06 |
| JPH0564099B2 true JPH0564099B2 (en) | 1993-09-13 |
Family
ID=13468697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61071722A Granted JPS62227633A (en) | 1986-03-28 | 1986-03-28 | Synthetic resin tube and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62227633A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0713632Y2 (en) * | 1989-02-18 | 1995-04-05 | ユーシー産業株式会社 | Hose for vacuum cleaner |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3679531A (en) * | 1968-04-05 | 1972-07-25 | Dynamit Nobel Ag | Shaped section of a thermoplastic synthetic material |
| JPS52114114A (en) * | 1976-03-19 | 1977-09-24 | Kuraray Plastics Co | Thermal insulating flexible hose |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52139527U (en) * | 1976-04-19 | 1977-10-22 | ||
| JPS59131682U (en) * | 1983-02-23 | 1984-09-04 | 東海ゴム工業株式会社 | Reinforced core hose |
-
1986
- 1986-03-28 JP JP61071722A patent/JPS62227633A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3679531A (en) * | 1968-04-05 | 1972-07-25 | Dynamit Nobel Ag | Shaped section of a thermoplastic synthetic material |
| JPS52114114A (en) * | 1976-03-19 | 1977-09-24 | Kuraray Plastics Co | Thermal insulating flexible hose |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62227633A (en) | 1987-10-06 |
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