JPS58132526A - Manufacture of laminated tube and die used therefor - Google Patents
Manufacture of laminated tube and die used thereforInfo
- Publication number
- JPS58132526A JPS58132526A JP57015774A JP1577482A JPS58132526A JP S58132526 A JPS58132526 A JP S58132526A JP 57015774 A JP57015774 A JP 57015774A JP 1577482 A JP1577482 A JP 1577482A JP S58132526 A JPS58132526 A JP S58132526A
- Authority
- JP
- Japan
- Prior art keywords
- die
- tube
- synthetic resin
- resin layer
- sealing means
- 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
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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/151—Coating hollow articles
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は積層チューブの新規な製法およびそれに用いる
ためのダイスに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel method for manufacturing laminated tubes and a die for use therein.
さらに詳しくは、チューブの外周に合成樹脂かコーティ
ングするためのダイス内に挿通されるチューブを、チュ
ーブとダイス内面との間隙を真空状態にすることにより
ダイス内面に密着せしめ、それにより芯材を用いること
なく正ｉな形状のチューブを製造しうる積層チューブの
製法およびそれに用いるダイスに関する。More specifically, a tube inserted into a die for coating the outer circumference of the tube with synthetic resin is brought into close contact with the inner surface of the die by creating a vacuum in the gap between the tube and the inner surface of the die, thereby using the core material. The present invention relates to a method for manufacturing a laminated tube that can manufacture a tube with a positive i shape without any problems, and a die used therein.
従来、アルミ箔などの金属箔と合成樹脂層とからな乞積
層シートから表面につぎ目が現われないように全周に合
成樹脂を被覆してなる積層チューブが製造されている。Conventionally, a laminated tube is manufactured by covering the entire circumference with a synthetic resin from a laminated sheet made of a metal foil such as aluminum foil and a synthetic resin layer so that no seams appear on the surface.
このような積層チューブの製造方法としては、芯材とし
てガイドパイプを合成樹脂被覆用成形機のダイス内全域
にわたり所定の間隙を保って遊挿配置し、該ガイドパイ
プに沿わせながら積層シートの両側縁を接合し、円筒状
となったチューブをダイスに通すことにより、チューブ
外周に合成樹脂を被覆せしめる方法が提案されている。A method for manufacturing such a laminated tube is to loosely insert a guide pipe as a core material across the entire die of a synthetic resin coating molding machine with a predetermined gap maintained, and then insert the guide pipe on both sides of the laminated sheet along the guide pipe. A method has been proposed in which the outer periphery of the tube is coated with synthetic resin by joining the edges and passing the tube into a cylindrical shape through a die.
しかしながらそのような方法には、合成樹脂をチューブ
外周に均一に被覆するためにガイドバイブとダイス内面
との同心性をきわめて正確に保持しなければならないと
いう欠点がある。さらにチューブの内面とガイドバイブ
とが広い範囲にわたって接触しているため、すべり摩擦
による抵抗が大きく、チューブを進行せしめるために大
きな動力を必要とし、さらにチューブ内面に設けられて
いる合成樹脂被覆が傷つきやすいという欠点がある。However, such a method has the disadvantage that the concentricity of the guide vibe and the inner surface of the die must be maintained very accurately in order to uniformly coat the outer circumference of the tube with the synthetic resin. Furthermore, since the inner surface of the tube and the guide vibrator are in contact over a wide area, there is a large resistance due to sliding friction, and a large amount of power is required to advance the tube, and the synthetic resin coating on the inner surface of the tube may be damaged. It has the disadvantage of being easy.
そこで本発明者は斜上の欠点を排除すべく鋭意研究を重
ねた結果、少なくとも片面に合成樹脂層が設けられてい
る金属箔からなる積層シートを長手方向に進行せしめ、
該進行に伴なつ−Ｃ順次積層シートの両側縁を重ねあわ
せて円筒状チューブとなるように接合し、該チューブを
合成樹脂被覆用成形機のダイス内に挿通せしめるととも
にチューブとダイス内面との間隙を真空状態にすること
により、チューブをダイス内面に密着せしめダイス出口
でチューブ外周に合成樹脂層を形成せしめることにより
、きわめて容易に均一な合成樹脂層を有する積層チュー
ブを製造しうるという新たな事実を見出すとともに、合
成樹脂被覆用成形機のダイスと、該ダイスの挿通孔の入
口部近辺内面に設けられ、かつチューブの外面に密接し
うるシール手段とからなり、前記ダイスの挿通孔内面に
は真空発生源と連通される通気孔が開口しているダイス
を用いることにより前記方法を容易に実施しうろことを
見出し、本発明を完成するにいたった。Therefore, as a result of extensive research in order to eliminate the drawback of slanting, the inventor of the present invention made a laminated sheet made of metal foil provided with a synthetic resin layer on at least one side advance in the longitudinal direction,
As this progresses, the side edges of the -C sequentially laminated sheets are overlapped and joined to form a cylindrical tube, and the tube is inserted into the die of a synthetic resin coating molding machine, and the gap between the tube and the inner surface of the die is reduced. A new fact that a laminated tube with a uniform synthetic resin layer can be manufactured very easily by applying a vacuum to the tube, causing the tube to adhere to the inner surface of the die, and forming a synthetic resin layer around the outer circumference of the tube at the exit of the die. It consists of a die of a synthetic resin coating molding machine and a sealing means that is provided on the inner surface near the entrance of the insertion hole of the die and can be brought into close contact with the outer surface of the tube, and the inner surface of the insertion hole of the die has a It was discovered that the method described above could be easily carried out by using a die having a vent hole communicating with a vacuum source, and the present invention was completed.
つぎに図面を用いて本発明を説明する。図面は本発明の
ダイスの一実施例を示す断面図である。Next, the present invention will be explained using the drawings. The drawing is a sectional view showing an embodiment of the die of the present invention.
図面において、（１）はアルミ箔の両面に合成樹脂層が
設けられてなる積層シー） 、（８）は基端側か吊手（
４）で支持されているガイド部材、（５）はガイド部材
（３）の外周に配置されている外側支え部材であり、該
外側支え部材（５）は加熱ローラ（６）を回転自在に支
持している。（７）は合成樹脂被覆用成形機（図示され
ていない）のダイスであり、該ダイス（７）はダイス（
７）の挿通孔（７ａ）が前記ガイド部材（８）とほぼ同
心となるように配置されている。挿通孔（７ａ）入口近
辺はダイス本体（７ｂ）とは別体にシール手段取付部材
（８）として形成されており、該シール手段取付部材（
８）はダイス本体（７ｂ）に、０リング（９）を介して
気密となるように固着されている。前記シール手段取付
部＠（８）の内面には、ダイス（７）の挿通孔（７ａ）
に挿通されるチューブ（Ｉａ）の外周面に密接しうるシ
ール手段αＯ）が設けられている。さらにシール手段取
付部材（８）の内面であって、前記シール手段α０）よ
りも出口側の部位には真空発生源（図示されていない）
と連通される通気孔（１１）が開口している。In the drawings, (1) is a laminated sheet made of aluminum foil with synthetic resin layers on both sides, and (8) is a laminated sheet made of aluminum foil with synthetic resin layers on both sides.
(5) is an outer support member disposed around the outer periphery of the guide member (3), and the outer support member (5) rotatably supports the heating roller (6). are doing. (7) is a die of a synthetic resin coating molding machine (not shown), and the die (7) is a die (
The insertion hole (7a) of 7) is arranged so as to be substantially concentric with the guide member (8). The vicinity of the entrance of the insertion hole (7a) is formed as a sealing means mounting member (8) separately from the die body (7b).
8) is airtightly fixed to the die body (7b) via an O-ring (9). The inner surface of the sealing means attachment part @ (8) has a through hole (7a) for the die (7).
A sealing means αO) that can be brought into close contact with the outer peripheral surface of the tube (Ia) inserted into the tube (Ia) is provided. Furthermore, a vacuum generation source (not shown) is provided on the inner surface of the sealing means mounting member (8), at a portion on the exit side of the sealing means α0).
A ventilation hole (11) communicating with is open.
なお、本実施例においては従来のダイスに対しても容易
に本発明の方法を行ないうるように、シール手段取付部
材（８）をダイス本体（７ｂ）と別体、に形成している
が、ダイス本体（７ｂ）の挿通孔（７ａ）入口部内面に
直接シール手段を設けるようにしてもよい。In this embodiment, the sealing means mounting member (8) is formed separately from the die body (7b) so that the method of the present invention can be easily applied to a conventional die. A sealing means may be provided directly on the inner surface of the entrance portion of the insertion hole (7a) of the die body (7b).
つぎに斜上のごとく構成される装置を用いて積層チュー
ブを形成する方法を説明する。Next, a method of forming a laminated tube using a device configured like a diagonal will be explained.
はじめに積層シート（１）をＵ字形に背面させながら進
行させ、ガイド部材（８）に巻きつけるようにして両側
縁を順次重ねあわせる。それにより積層シート（１）は
ガイド部材（８）と外側支え部材（５）間で円筒状に成
形され、重ねあわされた部分が加熱ローラ（６）により
接合されることにより積層シート（１）がチューブ（１
ａ）に成形される。First, the laminated sheet (1) is advanced in a U-shape with its back facing, and both side edges are successively overlapped as it is wound around the guide member (8). As a result, the laminated sheet (1) is formed into a cylindrical shape between the guide member (8) and the outer support member (5), and the overlapping portions are joined by the heating roller (6) to form the laminated sheet (1). is the tube (1
a).
チューブはさらに進行し、ダイス０１）内へ送られる。The tube advances further and is fed into the die 01).
そのときチューブ（１ａ）の外周面と、ダイス（））の
内面との間隙は、一端がシール手段αＯ）により密封さ
れ、他端が被覆されようとしている合成樹脂（１２ａ）
により密封されているから、通気孔（１１）を通じて連
通している真空圧発生源により減圧状態とされ、チュー
ブ（１ａ）はダイス（７）内面に密接せられる。さらに
その状態のままチューブ（１ａ）はダイス（７） ９Ｓ
部に送出され、ダイス（７）の出目端においてチューブ
（１ａ）の外周につぎ目のない合成樹脂層θ２）が被覆
される。そのとき被覆されようとしている合成樹脂（１
２ａ）とチューブ（１ａ）外周面との間隙も減圧状態で
あるから、合成樹脂（１２＆）のチューブ（１ａ）外周
面に対する密着性はきわめて高いものとなる。At this time, the gap between the outer circumferential surface of the tube (1a) and the inner surface of the die () is sealed at one end by a sealing means αO), and at the other end by the synthetic resin (12a) to be covered.
Since the tube (1a) is sealed tightly, the tube (1a) is brought into a reduced pressure state by a vacuum pressure generation source communicating through the ventilation hole (11), and the tube (1a) is brought into close contact with the inner surface of the die (7). Further, in that state, the tube (1a) is turned into a die (7) 9S
The outer periphery of the tube (1a) is coated with a seamless synthetic resin layer θ2) at the exit end of the die (7). At that time, the synthetic resin that is about to be coated (1
Since the gap between 2a) and the outer peripheral surface of the tube (1a) is also under reduced pressure, the adhesion of the synthetic resin (12&) to the outer peripheral surface of the tube (1a) is extremely high.
本発明の方法において、挿通孔（７ａ）とチューブ（１
ａ）外周面の間隙の真空圧は積層シート（１）の材質お
よび構成に基づいて適宜選択されうるが、５０〜５００
ｍｍ ＨＧｌ程度であるのがチューブ（１ａ）と挿通
孔（７ａ）の密着性を確実にし、しかも適当なすべり摩
擦力を与えうるため好ましい。In the method of the present invention, the insertion hole (7a) and the tube (1
a) The vacuum pressure in the gap between the outer circumferential surfaces can be appropriately selected based on the material and structure of the laminated sheet (1), but is between 50 and 500
It is preferable that the amount is approximately 1 mm HGl because it ensures the close contact between the tube (1a) and the insertion hole (7a) and provides an appropriate sliding frictional force.
本発明の方法によれば、円筒部（１ｂ）は一定の領域に
わたって、しかもずぺての外周方向に対してつねに同じ
吸引圧でダイス内面に押圧されているため、円筒部（１
ｂ）の外向での合成樹脂材料（０）の被覆は偏肉や変形
がなく、容易に正確′な断面形状の積層チューブ（１Ｃ
）をうろことができる。さらに本発明の装置は芯材とな
るガイドパイプを有していないため、チューブとガイド
パイプ表面のすベリ賠擦に起因する欠点を排除すること
ができる。また本発明の方法によれば、ダイス内のチュ
ーブを支持するために吸引圧力を利用しており、外部か
ら洩れてくる空気は常時通気孔から吸引され、それによ
り空気が常時交換されているため、加熱ローラなどで加
熱されたチューブに対し好適な冷却効果を与えつる。According to the method of the present invention, the cylindrical portion (1b) is pressed against the inner surface of the die over a certain area and always with the same suction pressure in the direction of the outer circumference of the cylindrical portion (1b).
b) The outer covering of the synthetic resin material (0) has no uneven thickness or deformation, and can easily be coated with a laminated tube (1C) with an accurate cross-sectional shape.
). Furthermore, since the device of the present invention does not have a guide pipe serving as a core material, it is possible to eliminate defects caused by friction between the tube and the guide pipe surface. Furthermore, according to the method of the present invention, suction pressure is used to support the tube inside the die, and air leaking from the outside is constantly sucked through the ventilation hole, thereby constantly exchanging the air. , which provides a suitable cooling effect to the tube heated by a heating roller or the like.
斜上のごとく本発明の方法および装置は、積層チューブ
を製造するうえで多くのすぐれた効果を奏しうるもので
あり、その実用的価値はきわめて大である。As mentioned above, the method and apparatus of the present invention can produce many excellent effects in manufacturing laminated tubes, and their practical value is extremely great.
図面は本発明のダイスの一実施例を示す断面図である〇 （図面の主要符号） （１）：積層シート （１ａ）：チューブ （７）：ダイス （７ａ） ：挿通孔 （７ｂ） ：ダイス本体 （８）：シール手段取付部材 α０）：シール手段 （１１） ：通気孔 The drawing is a sectional view showing an embodiment of the die of the present invention. (Main symbols on drawings) (1): Laminated sheet (1a): Tube (7): Dice (7a): Through hole (7b): Dice body (8): Seal means mounting member α0): Sealing means (11): Ventilation hole
Claims (1)
らなる積層シートを長手方向に進行せしめ、該進行に伴
なって順次積層シートの両側線を重ねあわせて円筒状チ
ューブとなるように接合し、該チューブを合成樹脂被覆
用成形機のダイス内に挿通せしめるとともにチューブと
ダイス内面との間隙を真空状態にすることにより、チュ
ーブをダイス内面に密接せしめダイス出口でチューブ外
周に合成樹脂層を形成せしめることを特徴とする積層チ
ューブの製法。 ２ 合成樹脂被覆用成形機のダイスと、該ダイスの挿通
孔の入口部近辺内面に設けられ、かつチューブの外面に
密接しうるシール手段とからなり、前記ダイスの挿通孔
内面には真空発生源に連通される通気孔が開口している
こに固着されうるシール手段取付部材として形成され、
前記通気孔がシール手段取付部祠内面に開口しているこ
とを特徴とする特許請求の範囲第２項記載のダイス。[Scope of Claims] 1. A laminated sheet made of metal foil on which at least one neck is coated with a resin layer is advanced in the longitudinal direction, and as it advances, both side lines of the laminated sheet are sequentially overlapped to form a cylinder. By inserting the tube into the die of a synthetic resin coating molding machine and creating a vacuum between the tube and the inner surface of the die, the tube is brought into close contact with the inner surface of the die, and at the exit of the die. A method for manufacturing a laminated tube characterized by forming a synthetic resin layer around the outer circumference of the tube. 2 Consists of a die of a molding machine for synthetic resin coating, and a sealing means provided on the inner surface near the entrance of the insertion hole of the die and capable of coming into close contact with the outer surface of the tube, and a vacuum generation source is provided on the inner surface of the insertion hole of the die. formed as a sealing means mounting member that can be fixed to a vent hole communicating with the opening of the sealing means mounting member;
3. The die according to claim 2, wherein the ventilation hole opens on the inner surface of the sealing means attachment part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57015774A JPS58132526A (en) | 1982-02-02 | 1982-02-02 | Manufacture of laminated tube and die used therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57015774A JPS58132526A (en) | 1982-02-02 | 1982-02-02 | Manufacture of laminated tube and die used therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58132526A true JPS58132526A (en) | 1983-08-06 |
Family
ID=11898150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57015774A Pending JPS58132526A (en) | 1982-02-02 | 1982-02-02 | Manufacture of laminated tube and die used therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58132526A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105904749A (en) * | 2016-05-30 | 2016-08-31 | 顾地科技股份有限公司 | Production technology for producing prefabricated plastic thermal insulation pipeline through one-step method |
| CN105965813A (en) * | 2016-05-30 | 2016-09-28 | 顾地科技股份有限公司 | Device and method for continuously attaching outer protective layer to plastic flexible prefabricated thermal-insulation pipe |
| CN106079472A (en) * | 2016-05-30 | 2016-11-09 | 顾地科技股份有限公司 | The production line of One-step production prefabricated plastic utilidor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55100144A (en) * | 1979-01-24 | 1980-07-30 | Nippon Steel Corp | Manufacture of plastic cladding steel pipe |
-
1982
- 1982-02-02 JP JP57015774A patent/JPS58132526A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55100144A (en) * | 1979-01-24 | 1980-07-30 | Nippon Steel Corp | Manufacture of plastic cladding steel pipe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105904749A (en) * | 2016-05-30 | 2016-08-31 | 顾地科技股份有限公司 | Production technology for producing prefabricated plastic thermal insulation pipeline through one-step method |
| CN105965813A (en) * | 2016-05-30 | 2016-09-28 | 顾地科技股份有限公司 | Device and method for continuously attaching outer protective layer to plastic flexible prefabricated thermal-insulation pipe |
| CN106079472A (en) * | 2016-05-30 | 2016-11-09 | 顾地科技股份有限公司 | The production line of One-step production prefabricated plastic utilidor |
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