JPH06143405A - Apparatus for manufacturing corrugated tube - Google Patents
Apparatus for manufacturing corrugated tubeInfo
- Publication number
- JPH06143405A JPH06143405A JP4328723A JP32872392A JPH06143405A JP H06143405 A JPH06143405 A JP H06143405A JP 4328723 A JP4328723 A JP 4328723A JP 32872392 A JP32872392 A JP 32872392A JP H06143405 A JPH06143405 A JP H06143405A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- resin strip
- roller
- rings
- strip
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 32
- 239000000057 synthetic resin Substances 0.000 claims abstract description 32
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000007423 decrease Effects 0.000 claims description 5
- 230000008602 contraction Effects 0.000 description 8
- 238000000465 moulding Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- 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、管壁面を断面波形に成
形して十分な偏平強度を備えた合成樹脂製のコルゲート
管の製造装置に係り、特に耐久性の高いコルゲート管を
製造するコルゲート管の製造装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin corrugated pipe manufacturing apparatus having a corrugated cross-section with a corrugated pipe wall surface, and a corrugated pipe having particularly high durability. The present invention relates to a pipe manufacturing apparatus.
【０００２】[0002]
【従来の技術】従来、この種のコルゲート管の製造装置
としては、例えば図４に示すように、相対向する支持フ
レーム２と支持板４の間の仮想円周に沿って複数個回動
自在に配設されて実質的に一つの回転軸体を形成するロ
ーラ３、３、…と、前記ローラ３、３、…の周面に複数
個配設され全体で螺旋形状をなす断面凸条のリング１
２、１２、…などを有するコルゲート管の製造装置が知
られている（特公昭６２−６０２６１号公報参照）。2. Description of the Related Art Conventionally, as a corrugated pipe manufacturing apparatus of this type, as shown in FIG. 4, for example, a plurality of rotatable units can be freely rotated along a virtual circumference between a supporting frame 2 and a supporting plate 4 facing each other. , Which form a single rotary shaft, and a plurality of ridges having a spiral cross section, which are arranged on the peripheral surfaces of the rollers 3, 3 ,. Ring 1
An apparatus for manufacturing a corrugated pipe having 2, 12, ... Is known (see Japanese Patent Publication No. 62-60261).
【０００３】なお、図中、符号１は装置の基台、５は支
持フレーム２と支持板４の間に配設されつつ支持板４を
支持する基軸、６及び７はローラ３の軸両端に配設され
支持フレーム２と支持板４にそれぞれ貫通して該ローラ
３を回動自在にする軸部、８は軸部６の軸受部、１６は
ローラ３の駆動源たるモータ、そして１９及び２２はチ
ェーンである。In the figure, reference numeral 1 is a base of the apparatus, 5 is a base shaft for supporting the support plate 4 while being disposed between the support frame 2 and the support plate 4, and 6 and 7 are at both ends of the shaft of the roller 3. A shaft portion which is provided and penetrates through the support frame 2 and the support plate 4 to make the roller 3 rotatable, 8 is a bearing portion of the shaft portion 6, 16 is a motor as a drive source of the roller 3, and 19 and 22 Is a chain.
【０００４】[0004]
【発明が解決しようとする課題】ところが、従来の装置
にあっては、リングはすべて略同一形状であったため、
合成樹脂製帯状体は冷却による収縮よって製造中のコル
ゲート管は引っ張られた状態で固化されて製造され、該
コルゲート管の耐衝撃性や耐圧性等といった耐久性が低
いという課題があった。また、前記収縮により製造中に
前記帯状体は前記回転基軸の谷部において該ローラ上か
ら離れてしまうため製造される製品の精度が低いという
課題があった。However, in the conventional device, all the rings have substantially the same shape.
The synthetic resin strip is manufactured by being solidified in a stretched state by the shrinkage of the corrugated pipe during cooling due to shrinkage due to cooling, and the corrugated pipe has low durability such as impact resistance and pressure resistance. In addition, there is a problem that the accuracy of the manufactured product is low because the belt-shaped body is separated from the roller at the valley portion of the rotation base shaft during the manufacturing due to the contraction.
【０００５】したがって、本発明の目的は上記従来の製
造装置における課題を解決すべく発明されたものであっ
て、耐衝撃性、耐圧性等といった耐久性が高いと共に製
造される製品の精度が高いコルゲート管の製造装置を提
供することにある。Therefore, an object of the present invention was invented to solve the above-mentioned problems in the conventional manufacturing apparatus, and the durability of impact resistance, pressure resistance, etc. is high and the precision of the manufactured product is high. An object is to provide a corrugated pipe manufacturing apparatus.
【０００６】[0006]
【課題を解決する手段】本発明は上記に鑑み発明された
ものであって、相対向する支持フレームと支持板の間の
仮想円周に沿って複数個回動自在に配設されて実質的に
一つの回転軸体を形成するローラと、前記ローラの周面
に複数個配設され全体で螺旋形状をなす断面凸条のリン
グと、前記支持フレーム近傍に配設され溶融した合成樹
脂帯状体を押し出す押出機を有するコルゲート管の製造
装置において、前記リング同士間のピッチ、前記リング
の径及びその山幅のそれぞれの値が前記合成樹脂帯状体
の進行方向に行くにしたがって徐々に小さくなり且つ前
記合成樹脂帯状体の供給部位でのそれぞれの値をＸ、そ
れぞれの値の最小値をＹとしたときに０．９＜Ｙ／Ｘ＜
１の関係が成り立つように構成したことを特徴とするコ
ルゲート管の製造装置である。DISCLOSURE OF THE INVENTION The present invention has been made in view of the above, and a plurality of rotatably arranged along a virtual circumference between a support frame and a support plate which face each other are provided. Rollers that form one rotating shaft, a plurality of rings having a convex cross-section that are arranged in a spiral shape on the peripheral surface of the rollers, and have a spiral shape as a whole, and push out molten synthetic resin strips that are arranged near the support frame. In a corrugated pipe manufacturing apparatus having an extruder, the pitch between the rings, the diameter of the rings, and the respective mountain widths of the rings gradually decrease in the traveling direction of the synthetic resin strip and 0.9 <Y / X <, where X is the respective value at the supply site of the resin strip and Y is the minimum value of the respective values.
The corrugated pipe manufacturing apparatus is characterized in that the relationship 1 is established.
【０００７】ここで、前記リング同士間のピッチ、前記
リングの径及びその山幅のそれぞれが前記合成樹脂帯状
体の進行方向に行くにしたがって徐々に小さくなってい
るのは、合成樹脂帯状体の収縮に対応するために構成さ
れたものである。また、前記合成樹脂帯状体供給部位で
のそれぞれの値Ｘとそれぞれの値の最小値Ｙにおいて
０．９＜Ｙ／Ｘ＜１の関係を構成要素としたのは、Ｙ／
Ｘ＝１では従来の装置と同様な装置でしかなく、Ｙ／Ｘ
が０．９より小さい場合にはリングの頂点と合成樹脂帯
状体との間に空間が生じてしまうためである。Here, the pitch between the rings, the diameter of the rings, and the mountain width thereof gradually decrease in the traveling direction of the synthetic resin strip because of the synthetic resin strip. It is configured to accommodate contraction. Further, the relation of 0.9 <Y / X <1 between the respective values X and the minimum value Y of the respective values at the synthetic resin strip supplying portion is defined as Y /
When X = 1, the device is the same as the conventional device, and Y / X
This is because when is less than 0.9, a space is generated between the apex of the ring and the synthetic resin strip.
【０００８】Ｙ／Ｘを０．９より大きい値に限定したの
は、該合成樹脂帯状体が一般にポリエチレンを基材とし
て構成されその成形収縮率は略２％であり、ローラ上で
捲回される際に張力を持たせているため、捲回後には略
１０％の収縮が生じるためである。したがって、成形収
縮率の高い基材を用いた該合成樹脂帯状体であれば、Ｙ
／Ｘの値の下限をさらに０．８まで下げることもでき
る。The Y / X is limited to a value larger than 0.9 because the synthetic resin strip is generally made of polyethylene as a base material and the molding shrinkage ratio is about 2%. This is because, since tension is applied during winding, shrinkage of about 10% occurs after winding. Therefore, if the synthetic resin strip using a base material having a high molding shrinkage is Y
The lower limit of the value of / X can be further lowered to 0.8.
【０００９】ここで、本発明において、リングに関する
値を徐々に小さくしたのは成型時の収縮に対応するため
であるから、合成樹脂帯状体の収縮終了後の保型手段と
して利用されるリングにあっては必ずしも前記値を変化
させておくことはなく、同一形状のリングを均一なピッ
チで配設しても構わないのは勿論である。なお、本発明
にかかる装置に使用される合成樹脂としては熱可塑性樹
脂がよく、例えばポリエチレン、ポリプロピレン、ポリ
塩化ビニル等がある。Here, in the present invention, the reason why the value relating to the ring is gradually decreased is to correspond to the contraction at the time of molding, so that the ring used as the shape-retaining means after the contraction of the synthetic resin strip is completed. In that case, the values are not necessarily changed, and it goes without saying that the rings having the same shape may be arranged at a uniform pitch. The synthetic resin used in the device according to the present invention is preferably a thermoplastic resin, such as polyethylene, polypropylene, polyvinyl chloride or the like.
【００１０】また、本発明にあっては、ローラ自体を仮
想円筒の中芯軸側に傾ける構成にすることによってコル
ゲート管の径自身の収縮に対応した装置、該仮想円筒の
外部から形状を固定させる押圧ロールを構成を追加した
装置、さらには二層のコルゲート管を製造するためにコ
ルゲート管の内部に平滑な合成樹脂管の形成装置を構成
した装置に対しても適用できるのは勿論である。Further, according to the present invention, the roller itself is tilted toward the center axis of the virtual cylinder so that the corrugated tube has a diameter corresponding to its contraction, and the shape is fixed from the outside of the virtual cylinder. It is needless to say that the present invention can be applied to an apparatus in which a structure of a pressing roll to be added is added, and further to an apparatus in which a device for forming a smooth synthetic resin tube is formed inside a corrugated tube in order to manufacture a two-layer corrugated tube .
【００１１】[0011]
【作用】本発明は、仮想円周に沿って配設されたローラ
の周面に複数個配設され全体で螺旋形状をなす断面凸条
のリングに対し、溶融した合成樹脂帯状体を押し出し捲
回してコルゲート管を製造するコルゲート管の製造装置
において、前記リング同士間のピッチ、前記リングの径
及びその山幅のそれぞれの値が前記合成樹脂帯状体の進
行方向に行くにしたがって徐々に小さくなり且つ前記合
成樹脂帯状体の供給部位でのそれぞれの値をＸ、最終リ
ング配設部位でのそれぞれの値をＹとしたときに０．９
＜Ｙ／Ｘ＜１の関係が成り立つように構成して前記ピッ
チ、前記リング径及び前記山幅を合成樹脂帯状体の収縮
に整合するよう大きさを変化させ、これにより前記ロー
ラ及びリング上で冷却固化されるコルゲート管自体に歪
みが生じない。According to the present invention, a molten synthetic resin strip is extruded and wound onto a ring having a convex ridge formed in a spiral shape as a whole, which is provided on a peripheral surface of a roller arranged along a virtual circumference. In a corrugated pipe manufacturing apparatus for manufacturing a corrugated pipe by turning, each value of the pitch between the rings, the diameter of the rings, and the mountain width thereof gradually decreases in the traveling direction of the synthetic resin strip. Further, when each value at the supply site of the synthetic resin strip is X and each value at the final ring disposition site is Y, 0.9
<Y / X <1 is established, and the pitch, the ring diameter, and the crest width are changed in size so as to match the contraction of the synthetic resin strip, and thereby, on the roller and the ring. No distortion occurs in the corrugated tube itself that is cooled and solidified.
【００１２】[0012]
【実施例】以下、本発明を図面に示す実施例に基づいて
詳細に説明する。本実施例にかかる装置は二層の内面平
滑なコルゲート管の製造装置であり、図１は本発明に係
るコルゲート管の製造装置の一実施例の特徴部分である
ローラ及びリングを抜き出して模式的に示した説明図で
あり、図２は本実施例の内面平滑コルゲート管の製造装
置を模式的に示した説明図であり、図３は図２の製造手
段を模式的に示した説明図であり、そして図４は従来の
コルゲート管の製造装置を模式的に示した説明図であ
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. The apparatus according to the present embodiment is a manufacturing apparatus for a corrugated tube having two layers of smooth inner surface, and FIG. 1 is a schematic drawing of a roller and a ring, which are characteristic parts of an embodiment of the apparatus for manufacturing a corrugated tube according to the present invention. 2 is an explanatory view schematically showing a manufacturing apparatus for the inner surface smooth corrugated pipe of the present embodiment, and FIG. 3 is an explanatory view schematically showing the manufacturing means of FIG. FIG. 4 is an explanatory view schematically showing a conventional corrugated pipe manufacturing apparatus.
【００１３】本実施例のコルゲート管の製造装置は、図
２に示すように、相対向する支持フレーム２と支持板４
の間の仮想円周に沿って９本のローラ３ａ、３ｂ、…、
３ｉを配設して実質的に一つの回転軸体を形成し、各ロ
ーラ３ａ、３ｂ、…、３ｉの周面に各７個配設し全体で
螺旋形状をなす断面凸条のリング１２、１２、…を該ロ
ーラの支持フレーム２側半分に配設して主要部を構成し
ている。このリング１２同士間のピッチＰ、前記リング
１２の径Ｑ及びその山幅Ｒのそれぞれの値は、図１に模
式的に示すように、支持フレームから支持板に向けて
（図１の符号の数字の大きい方から小さい方に向けて）
徐々に小さくなるよう構成されている。As shown in FIG. 2, the corrugated pipe manufacturing apparatus of the present embodiment has a supporting frame 2 and a supporting plate 4 facing each other.
Nine rollers 3a, 3b, ... Along the virtual circumference between
3i are arranged to form one rotating shaft body, and seven rollers are arranged on the peripheral surfaces of the rollers 3a, 3b, ... .. are arranged in the half of the roller on the side of the support frame 2 to form the main part. The values of the pitch P between the rings 12, the diameter Q of the ring 12, and the mountain width R thereof are, as schematically shown in FIG. 1, from the support frame to the support plate (reference numeral of FIG. 1). From the highest number to the lowest number)
It is configured to gradually become smaller.
【００１４】なお、説明上、図１は形状の変化を判りや
すく示したものであり、図２及び図３はリング１２のピ
ッチ、径及び山幅の変化は装置全体の比率から見ると微
小であるため、実測とは異なっている。For the sake of explanation, FIG. 1 shows a change in shape in an easy-to-understand manner, and FIGS. 2 and 3 show a slight change in pitch, diameter, and crest width of the ring 12 when viewed from the ratio of the entire apparatus. Therefore, it differs from the actual measurement.
【００１５】なお、上記支持板４は支持フレーム２を貫
通して配設される中空の基軸５の先端に取付られ、上記
ローラ３ａ、３ｂ、…、３ｉは軸両端に備える軸部６、
６、…、７、７、…を各々軸受部（図示省略）に貫通し
て軸承させて回動自在に配設されている。一方、上記基
軸５の先端に配設された支持板４は基軸５の回動によっ
て前記ローラ３ａ、３ｂ、…、３ｉを相互に平行状態を
保持したまま仮想円周上を回動する。ここで、支持板４
は基軸５に対し予め捩じりを入れられることができ、本
実施例にあっては、図２に示すようなｘ−ｙの角度で捩
じりを入れている。The support plate 4 is attached to the tip of a hollow base shaft 5 which penetrates the support frame 2, and the rollers 3a, 3b, ..., 3i have shaft portions 6 provided at both ends of the shaft.
The bearings (not shown) pass through the bearings 6, ..., 7, 7 ,. On the other hand, the support plate 4 arranged at the tip of the base shaft 5 rotates on the imaginary circumference while the rollers 3a, 3b, ..., 3i are kept parallel to each other by the rotation of the base shaft 5. Here, the support plate 4
Can be preliminarily twisted with respect to the base shaft 5, and in the present embodiment, it is twisted at an xy angle as shown in FIG.
【００１６】なお、図中、符号Ａは熱可塑性樹脂の帯状
体、１６はローラの駆動源たるモータ、１７は減速装
置、１９及び２２はチェーン、２４は溶融した帯状体Ａ
を押し出す押出機、２５は押し出された帯状体Ａを外部
から成型する押圧ローラ、そして、２６は帯状体Ａのガ
イドローラである。また、図２及び図３中、符号４６は
コルゲート管の内面を形成用のマンドレル、４７はその
ダイス、Ｂはコルゲート管の内面に用いられた合成樹脂
帯状体である。In the figure, reference numeral A is a strip of thermoplastic resin, 16 is a motor for driving a roller, 17 is a speed reducer, 19 and 22 are chains, and 24 is a melted strip A.
Is a pushing roller for molding the extruded strip A from the outside, and 26 is a guide roller for the strip A. 2 and 3, reference numeral 46 is a mandrel for forming the inner surface of the corrugated tube, 47 is the die thereof, and B is a synthetic resin strip used for the inner surface of the corrugated tube.
【００１７】ここで、以上の構成からなる本発明にかか
る実施例のコルゲート管製造工程を図２及び図３に基づ
いて説明する。Now, the manufacturing process of the corrugated pipe of the embodiment having the above-mentioned structure according to the present invention will be described with reference to FIGS.
【００１８】押出機２４から押し出された溶融した合成
樹脂帯状体Ａは、ガイドラーラ２６を介してリング１２
の外周に供給され、これと同時に帯状体Ａの供給速度に
併せて前記ローラ３ａ、３ｂ、…、３ｉがモータ１６に
より回動される。以上の２つの作用により該帯状体Ａの
先端がリング１２の外周上のｍ４、ｍ３、ｍ２、ｍ１地
点（図２参照）に進行する。帯状体Ａはさらに進行する
とローラ全体を螺旋状に進行することとなり、一周捲か
れると後から押し出されてくる帯状体Ａが一周前の帯状
体Ａと部分的に重なりあい、該帯状体Ａは全体で管状に
形成される。一方、該管状に形成された帯状体Ａは、外
部から上記押圧ローラ２５の押圧により、その外周の凹
凸形状も整えられる。The molten synthetic resin strip A extruded from the extruder 24 is passed through the guide rail 26 and the ring 12
3i, and at the same time, the rollers 3a, 3b, ..., 3i are rotated by the motor 16 in accordance with the supply speed of the strip A. Due to the above two actions, the tip of the strip A advances to the points m4, m3, m2 and m1 on the outer circumference of the ring 12 (see FIG. 2). When the strip A further advances, it will spirally move over the entire roller. When the strip A is wound around once, the strip A extruded from behind partially overlaps with the strip A one round before, and the strip A is formed. It is formed into a tubular shape as a whole. On the other hand, the strip-shaped body A formed in a tubular shape also has the irregular shape of the outer periphery thereof adjusted by the pressing of the pressing roller 25 from the outside.
【００１９】管状に形成された帯状体Ａはローラ３内を
流れる冷却水（図示省略）や雰囲気温度により冷却固化
される。ここで、この冷却固化の際には収縮が伴うが、
上述のように上記リングに関する値も徐々に小さくなっ
ているため、前記収縮が生じてもコルゲート管へと成形
された合成樹脂帯状体Ａには何ら張力が生じ得ないまま
冷却固化される。The tube-shaped strip A is cooled and solidified by the cooling water (not shown) flowing in the roller 3 and the ambient temperature. Here, when this cooling and solidification is accompanied by shrinkage,
As described above, the value relating to the ring is also gradually reduced, so that even if the contraction occurs, the synthetic resin strip A molded into the corrugated tube is cooled and solidified without generating any tension.
【００２０】なお、内面用の管は、押出機４７により押
し出された帯状体Ｂがローラ３ａ、３ｂ、…、３ｉの支
持板４側の外周が平滑な部分に捲回されることにより形
成される。また、この管は自己の冷却固化と同時に前記
帯状体Ａの内周面に融着される。The pipe for the inner surface is formed by winding the strip-shaped body B extruded by the extruder 47 on a portion where the outer circumference of the rollers 3a, 3b, ..., 3i on the side of the support plate 4 is smooth. It Further, this tube is fused to the inner peripheral surface of the strip A at the same time as it is cooled and solidified.
【００２１】本実施例にあっては、リング同士間のピッ
チ、前記リングの径及びその山幅のそれぞれが前記合成
樹脂帯状体の進行方向に行くにしたがって徐々に小さく
なり且つ前記合成樹脂帯状体の供給部位でのそれぞれの
値をＸ、それぞれの値の最小値をＹとしたときに０．９
＜Ｙ／Ｘ＜１の関係が成り立つように構成しているた
め、二層の内面平滑コルゲート管の製造であっても、帯
状体の収縮によるコルゲート管自身の歪みが生じ得ず、
耐衝撃性、耐圧性等といった耐久性が高いコルゲート管
を製造でき、一方、コルゲート管の外周の凹凸を精度よ
く製造できる。In the present embodiment, the pitch between the rings, the diameter of the rings, and the mountain width thereof gradually decrease in the traveling direction of the synthetic resin strip and the synthetic resin strip is formed. Is 0.9 when each value at the supply site of X is X and the minimum value of each value is Y.
Since the relationship of <Y / X <1 is established, the corrugated tube itself cannot be distorted due to the contraction of the strip even in the production of the two-layer inner smooth corrugated tube.
It is possible to manufacture a corrugated tube having high durability such as impact resistance and pressure resistance, and on the other hand, it is possible to accurately manufacture irregularities on the outer periphery of the corrugated tube.
【００２２】[0022]
【発明の効果】本発明は、実質的に一つの回転軸体を形
成するように仮想円周に沿って配設した複数のローラの
両軸端を上記支持フレームと支持板に回動自在に軸承せ
しめ、前記ローラの周面に複数個配設され全体で螺旋形
状をなす断面凸条のリングと、前記支持フレーム近傍に
配設され溶融した合成樹脂帯状体を押し出す押出機を有
するコルゲート管の製造装置において、前記リング同士
間のピッチ、前記リングの径及びその山幅のそれぞれが
前記合成樹脂帯状体の進行方向に行くにしたがって徐々
に小さくなり且つ前記合成樹脂帯状体の供給部位でのそ
れぞれの値をＸ、それぞれの値の最小値をＹとしたとき
に０．９＜Ｙ／Ｘ＜１の関係が成り立つように構成し、
これにより耐衝撃性、耐圧性等といった耐久性が高いコ
ルゲート管を製造でき、一方、製造されるコルゲート管
の精度を高くすることができるという効果を有する。According to the present invention, both shaft ends of a plurality of rollers arranged along an imaginary circumference so as to substantially form one rotating shaft body are rotatably supported by the supporting frame and the supporting plate. A corrugated pipe having a plurality of rings, each of which has a ridge having a convex cross-section and which is formed in a spiral shape, and which is arranged on the peripheral surface of the roller so as to be supported by a roller, and which pushes out a molten synthetic resin strip provided in the vicinity of the support frame. In the manufacturing apparatus, the pitch between the rings, the diameter of the rings, and the mountain width of the rings are gradually reduced in the traveling direction of the synthetic resin strip, and at the supply sites of the synthetic resin strip. When the value of X is X and the minimum value of each value is Y, the relationship 0.9 <Y / X <1 is established,
As a result, a corrugated tube having high durability such as impact resistance and pressure resistance can be manufactured, and on the other hand, the accuracy of the manufactured corrugated tube can be increased.
【図１】本発明に係るコルゲート管の製造装置の一実施
例の特徴部分であるローラ及びリングを抜き出して模式
的に示した説明図である。FIG. 1 is an explanatory view schematically showing a roller and a ring, which are characteristic parts of an embodiment of a corrugated pipe manufacturing apparatus according to the present invention, extracted and shown.
【図２】本実施例の内面平滑コルゲート管の製造装置を
模式的に示した説明図である。FIG. 2 is an explanatory view schematically showing an apparatus for manufacturing an inner surface smooth corrugated tube according to the present embodiment.
【図３】図２の製造手段を模式的に示した説明図であ
る。FIG. 3 is an explanatory view schematically showing the manufacturing means of FIG.
【図４】従来のコルゲート管の製造装置を模式的に示し
た説明図である。FIG. 4 is an explanatory view schematically showing a conventional corrugated pipe manufacturing apparatus.
２ 支持フレーム ３ ローラ ４ 支持板 １２ リング ２４ 押出機 Ａ 合成樹脂帯状体 Ｐ ピッチ Ｑ リングの径 Ｒ リングの山幅 2 Support frame 3 Roller 4 Support plate 12 Ring 24 Extruder A Synthetic resin strip P Pitch Q Ring diameter R Ring mountain width
Claims (1)
（４）の間の仮想円周に沿って複数個回動自在に配設さ
れて実質的に一つの回転軸体を形成するローラ（３）
と、前記ローラ（３）の周面に複数個配設され全体で螺
旋形状をなす断面凸条のリング（１２、１２、…）と、
前記支持フレーム（２）近傍に配設され溶融した合成樹
脂帯状体を押し出す押出機（２４）を有するコルゲート
管の製造装置において、前記リング（１２）同士間のピ
ッチ（Ｐ）、前記リング（１２）の径（Ｑ）及びその山
幅（Ｒ）のそれぞれが前記合成樹脂帯状体（Ａ）の進行
方向に行くにしたがって徐々に小さくなり且つ前記合成
樹脂帯状体（Ａ）の供給部位でのそれぞれの値（Ｐ1 、
Ｑ1 、Ｒ1 ）をＸ、それぞれの値の最小値（Ｐｎ、Ｑ
ｎ、Ｒｎ）をＹとしたときに０．９＜Ｙ／Ｘ＜１の関係
が成り立つように構成したことを特徴とするコルゲート
管の製造装置。1. A roller, which is rotatably arranged along a virtual circumference between a supporting frame (2) and a supporting plate (4) facing each other and forms a substantially one rotating shaft. (3)
And a plurality of rings (12, 12, ...) With a convex section, which are arranged on the peripheral surface of the roller (3) and have a spiral shape as a whole.
A pitch (P) between the rings (12) and the ring (12) in a corrugated pipe manufacturing apparatus having an extruder (24) disposed near the support frame (2) and for extruding a molten synthetic resin strip. ) Diameter (Q) and its peak width (R) gradually decrease in the traveling direction of the synthetic resin strip (A) and at the supply site of the synthetic resin strip (A). Value of (P1,
Q1, R1) is X, and the minimum value of each value (Pn, Q
An apparatus for manufacturing a corrugated pipe, characterized in that a relationship of 0.9 <Y / X <1 is established when (n, Rn) is Y.
Priority Applications (17)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32872392A JP3641277B2 (en) | 1992-11-13 | 1992-11-13 | Internal smooth corrugated pipe manufacturing equipment |
| TW082109188A TW226003B (en) | 1992-11-13 | 1993-11-03 | |
| IL10749293A IL107492A (en) | 1992-11-13 | 1993-11-04 | Apparatus for producing a corrugated tube |
| AU53770/94A AU660245B2 (en) | 1992-11-13 | 1993-11-08 | Corrugated pipe manufacturing apparatus |
| EP93924191A EP0635353B1 (en) | 1992-11-13 | 1993-11-08 | Corrugated pipe manufacturing apparatus |
| NZ272568A NZ272568A (en) | 1992-11-13 | 1993-11-08 | Producing tube of corrugated material by helically winding extruded plastic strip |
| DE69312283T DE69312283T2 (en) | 1992-11-13 | 1993-11-08 | METHOD FOR PRODUCING CORRUGATED TUBES |
| CA002127810A CA2127810C (en) | 1992-11-13 | 1993-11-08 | Corrugated pipe manufacturing apparatus |
| PCT/JP1993/001616 WO1994011180A1 (en) | 1992-11-13 | 1993-11-08 | Corrugated pipe manufacturing apparatus |
| NZ257388A NZ257388A (en) | 1992-11-13 | 1993-11-08 | Producing corrugated tube of synthetic resin material helically winding extruded plastic strip |
| ES93924191T ES2105341T3 (en) | 1992-11-13 | 1993-11-08 | APPARATUS TO MANUFACTURE CORRUGATED TUBES. |
| US08/256,620 US5593535A (en) | 1992-11-13 | 1993-11-08 | Apparatus for producing corrugated tube |
| MYPI93002379A MY119484A (en) | 1992-11-13 | 1993-11-12 | Apparatus for producing corrugated tube |
| CN93114655A CN1043973C (en) | 1992-11-13 | 1993-11-13 | Apparatus for producing corrugated tube |
| KR94702337A KR0151245B1 (en) | 1992-11-13 | 1994-07-06 | Apparatus for producing corrugated tube |
| AU16283/95A AU673121B2 (en) | 1992-11-13 | 1995-04-05 | Apparatus for producing corrugated tube |
| US08/549,576 US5662764A (en) | 1992-11-13 | 1995-10-27 | Apparatus for producing corrugated tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32872392A JP3641277B2 (en) | 1992-11-13 | 1992-11-13 | Internal smooth corrugated pipe manufacturing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06143405A true JPH06143405A (en) | 1994-05-24 |
| JP3641277B2 JP3641277B2 (en) | 2005-04-20 |
Family
ID=18213464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32872392A Expired - Lifetime JP3641277B2 (en) | 1992-11-13 | 1992-11-13 | Internal smooth corrugated pipe manufacturing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3641277B2 (en) |
-
1992
- 1992-11-13 JP JP32872392A patent/JP3641277B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP3641277B2 (en) | 2005-04-20 |
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