JPS6150764B2 - - Google Patents
Info
- Publication number
- JPS6150764B2 JPS6150764B2 JP13616982A JP13616982A JPS6150764B2 JP S6150764 B2 JPS6150764 B2 JP S6150764B2 JP 13616982 A JP13616982 A JP 13616982A JP 13616982 A JP13616982 A JP 13616982A JP S6150764 B2 JPS6150764 B2 JP S6150764B2
- Authority
- JP
- Japan
- Prior art keywords
- corrosion
- cylindrical mold
- resistant resin
- layer
- resistant
- 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
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】
本発明は外面耐食層樹脂管の遠心成形法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a centrifugal molding method for a resin pipe with an outer corrosion-resistant layer.
従来、外面耐食層の成形は、筒型を高速回転し
ながら該筒型内に耐食樹脂液を注入し、以つて遠
心成形することによつて行なつていた。ところ
で、外面耐食層は0.1〜0.5mmと薄いものであり、
しかも耐食樹脂液は高粘性であることから、遠心
による肉厚均一化には時間を要することになる。 Conventionally, the outer corrosion-resistant layer has been formed by injecting a corrosion-resistant resin liquid into the cylindrical mold while rotating it at high speed, and then performing centrifugal molding. By the way, the outer corrosion-resistant layer is as thin as 0.1 to 0.5 mm.
Moreover, since the corrosion-resistant resin liquid has a high viscosity, it takes time to make the wall thickness uniform by centrifugation.
本発明は上記問題点を解決することを目的とし
ている。 The present invention aims to solve the above problems.
すなわち本発明は、水平軸心の周りに回転可能
な筒型内に、その回転を停止させた状態で耐食樹
脂液を注入し、そして筒型の回転と回転停止とを
繰り返したのち、該筒型を連続回転してその内周
面上に耐食樹脂層を遠心成形し、その後、耐食樹
脂層の内側に樹脂層を遠心成形する外面耐食層樹
脂管の遠心成形法を提供するものである。かかる
方法によると、筒型内に注入した耐食樹脂液は該
筒型の回転により上方に持上げられ、そして回転
停止により筒型内周面上を流下することになり、
これを繰り返すことによつて、短時間のうちにほ
ぼ均一肉厚の耐食樹脂液層を形成でき、その後に
筒型を連続回転することによつて均一肉厚の耐食
樹脂層を遠心成形することができる。 That is, in the present invention, a corrosion-resistant resin liquid is injected into a cylindrical mold which can be rotated around a horizontal axis while the rotation thereof is stopped, and after repeating the rotation and rotation of the cylindrical mold, the cylinder is removed. This invention provides a method for centrifugally molding a resin pipe with an outer corrosion-resistant layer, in which a mold is continuously rotated to centrifugally mold a corrosion-resistant resin layer on the inner peripheral surface of the mold, and then a resin layer is centrifugally molded inside the corrosion-resistant resin layer. According to this method, the corrosion-resistant resin liquid injected into the cylindrical mold is lifted upward by the rotation of the cylindrical mold, and then flows down on the inner peripheral surface of the cylindrical mold when the rotation stops.
By repeating this process, a corrosion-resistant resin liquid layer with an almost uniform thickness can be formed in a short period of time, and then by continuously rotating the cylindrical mold, a corrosion-resistant resin layer with a uniform thickness can be centrifugally formed. I can do it.
以下、本発明の一実施例を図面に基づいて説明
する。第１図、第２図において１は筒型で、複数
個の輪体２に支持されて水平軸心３の周りに回転
可能であり、また両端には端面治具４が取付けら
れている。先ず筒型１の回転を停止させた状態
で、該筒型１内に供給管５を介して耐食樹脂液６
を注入する。注入された耐食樹脂液６は筒型１内
の下部にたまつている。次いで第３図に示すよう
に筒型１を回転させ、耐食樹脂液６を上部に持ち
上げる。その際に耐食樹脂液６は筒型１の内周面
に沿つて少しならされる。耐食樹脂液６の肉厚部
分が上位に達したところで筒型１の回転を停止さ
せる。すると第４図に示すように上部にある耐食
樹脂液６が筒型１の内周面上を流下し、肉厚は不
均一であるが内周面の全域に亘つて層を形成す
る。そして前述した筒型１の回転と回転停止とを
数回繰り返すことによつて、筒型１の内周面上に
ほぼ均一肉厚の耐食樹脂液６層を形成し得る。そ
の後、筒型１を連続回転して肉厚の均一化をはか
る。そして筒型１内にフアンで風などを送り込む
ことにより硬化させ、以つて第５図に示すように
筒型１の内周面上に耐食樹脂層７を遠心成形す
る。次いで第６図に示すように耐食樹脂層７の内
側にフアイバー８をワインデイングし、そして第
７図に示すように、前記フアイバー８に含浸させ
た状態で耐食樹脂層７の内側に樹脂層９を遠心成
形し、以つて外面耐食層樹脂管１０を成形し得
る。 Hereinafter, one embodiment of the present invention will be described based on the drawings. In FIGS. 1 and 2, numeral 1 has a cylindrical shape, is supported by a plurality of wheels 2, is rotatable around a horizontal axis 3, and has end jigs 4 attached to both ends. First, with the rotation of the cylindrical mold 1 stopped, a corrosion-resistant resin liquid 6 is poured into the cylindrical mold 1 through the supply pipe 5.
inject. The injected corrosion-resistant resin liquid 6 is collected in the lower part of the cylindrical mold 1. Next, as shown in FIG. 3, the cylindrical mold 1 is rotated to lift the corrosion-resistant resin liquid 6 upward. At this time, the corrosion-resistant resin liquid 6 is slightly leveled along the inner peripheral surface of the cylindrical mold 1. The rotation of the cylindrical mold 1 is stopped when the thick part of the corrosion-resistant resin liquid 6 reaches the upper part. Then, as shown in FIG. 4, the corrosion-resistant resin liquid 6 at the top flows down on the inner circumferential surface of the cylindrical mold 1, forming a layer over the entire inner circumferential surface, although the thickness is uneven. By repeating the above-described rotation and stopping of the cylindrical mold 1 several times, six layers of the corrosion-resistant resin liquid having a substantially uniform thickness can be formed on the inner circumferential surface of the cylindrical mold 1. Thereafter, the cylindrical mold 1 is continuously rotated to make the wall thickness uniform. Then, the resin is hardened by blowing air with a fan into the cylindrical mold 1, and a corrosion-resistant resin layer 7 is centrifugally formed on the inner peripheral surface of the cylindrical mold 1, as shown in FIG. Next, as shown in FIG. 6, fibers 8 are wound inside the corrosion-resistant resin layer 7, and as shown in FIG. can be centrifugally molded to form the outer corrosion-resistant layer resin tube 10.
以上述べたように本発明における外面耐食層樹
脂管の遠心成形法によると、筒型内に注入した耐
食樹脂液は該筒型の回転により上方に持上げら
れ、そして回転停止により筒型内周面上を流下す
ることになり、これを繰り返すことによつて、短
時間のうちにほぼ均一肉厚の耐食樹脂液層を形成
でき、その後に筒型を連続回転することによつて
均一肉厚の耐食樹脂層を遠心成形することができ
る。 As described above, according to the centrifugal molding method of the outer surface corrosion-resistant layer resin tube of the present invention, the corrosion-resistant resin liquid injected into the cylindrical mold is lifted upward by the rotation of the cylindrical mold, and when the rotation is stopped, the corrosion-resistant resin liquid is By repeating this process, a corrosion-resistant resin liquid layer with an almost uniform thickness can be formed in a short period of time, and then by continuously rotating the cylindrical mold, a layer with a uniform thickness can be formed. The corrosion-resistant resin layer can be centrifugally molded.
図面は本発明の一実施例を示し、第１図は縦断
側面図、第２図〜第７図は夫々縦断正面図であ
る。
１……筒型、２……輪体、３……水平軸心、４
……端面治具、５……供給管、６……耐食樹脂
液、７……耐食樹脂層、８……フアイバー、９…
…樹脂層、１０……外面耐食層樹脂管。
The drawings show an embodiment of the present invention, with FIG. 1 being a longitudinal side view and FIGS. 2 to 7 being longitudinal front views. 1...Cylindrical shape, 2...Ring body, 3...Horizontal axis, 4
... End face jig, 5 ... Supply pipe, 6 ... Corrosion-resistant resin liquid, 7 ... Corrosion-resistant resin layer, 8 ... Fiber, 9 ...
...Resin layer, 10...Outer surface corrosion-resistant layer resin pipe.
Claims (1)
回転を停止させた状態で耐食樹脂液を注入し、そ
して筒型の回転と回転停止とを繰り返したのち、
該筒型を連続回転してその内周面上に耐食樹脂層
を遠心成形し、その後、耐食樹脂層の内側に樹脂
層を遠心成形する外面耐食層樹脂管の遠心成形
法。1. Inject a corrosion-resistant resin liquid into a cylindrical mold that can be rotated around the horizontal axis while the rotation is stopped, and after repeating the rotation and stopping of the cylindrical mold,
A method for centrifugally forming a resin pipe with an outer surface corrosion-resistant layer, in which the cylindrical mold is continuously rotated to centrifugally form a corrosion-resistant resin layer on the inner peripheral surface thereof, and then a resin layer is centrifugally formed inside the corrosion-resistant resin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13616982A JPS5926228A (en) | 1982-08-03 | 1982-08-03 | Centrifugal molding method for outer corrosion-resistant resin pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13616982A JPS5926228A (en) | 1982-08-03 | 1982-08-03 | Centrifugal molding method for outer corrosion-resistant resin pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5926228A JPS5926228A (en) | 1984-02-10 |
| JPS6150764B2 true JPS6150764B2 (en) | 1986-11-06 |
Family
ID=15168932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13616982A Granted JPS5926228A (en) | 1982-08-03 | 1982-08-03 | Centrifugal molding method for outer corrosion-resistant resin pipes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5926228A (en) |
-
1982
- 1982-08-03 JP JP13616982A patent/JPS5926228A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5926228A (en) | 1984-02-10 |
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