JPS597029A - Preparation of synthetic resin rod reinforced by metal tube - Google Patents
Preparation of synthetic resin rod reinforced by metal tubeInfo
- Publication number
- JPS597029A JPS597029A JP57115598A JP11559882A JPS597029A JP S597029 A JPS597029 A JP S597029A JP 57115598 A JP57115598 A JP 57115598A JP 11559882 A JP11559882 A JP 11559882A JP S597029 A JPS597029 A JP S597029A
- Authority
- JP
- Japan
- Prior art keywords
- plug
- synthetic resin
- stopper
- metal tube
- rod
- 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
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)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、金属管で補強された合成樹脂棒状物の製造方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a synthetic resin rod reinforced with metal tubes.
金属管を芯材とし両端を密封し外周を合成樹脂で被覆し
た合成樹脂棒状物は、比較的軽量で剛強かつ耐食性に優
れ、建設用、農水産漁業用構造材等として広く用いられ
ている。この棒状物の製造方法としては、直列に隣接す
る金属管の端間(こ合成樹脂製の栓体を嵌挿し、金属管
と栓体とを連続して溶融合成樹脂で押出被覆し、冷却同
化後(こ栓体の中間部で切断し、端部の密封被覆された
棒状物を得る方法が行なわれている。この方法によると
き、栓体を金属管に嵌挿し、その位置を固定するために
、栓体の胴部は金属管外径とほぼ等しV1径とし管に嵌
挿する端部と段差を付し鍔部を設けて金属管端面に当接
させるのが一般的である。Synthetic resin rods, which are made of a metal tube as a core material, sealed at both ends, and coated with synthetic resin on the outer periphery, are relatively lightweight, strong, and have excellent corrosion resistance, and are widely used as structural materials for construction, agriculture, fisheries, and fisheries. The manufacturing method for this rod-shaped object is to insert a synthetic resin plug between the ends of adjacent metal tubes in series, and to cover the metal tube and the plug with molten synthetic resin by extrusion, cooling and assimilating the ends. After that, a method is used in which the plug is cut in the middle to obtain a rod-shaped object with a sealed end.When using this method, the plug is inserted into a metal pipe and the position is fixed. Generally, the body of the stopper has a diameter V1, which is approximately equal to the outer diameter of the metal tube, and has a step and a flange at the end that is fitted into the tube so as to come into contact with the end surface of the metal tube.
しかしながら、上記栓体を用いて溶融合成樹脂で被覆す
るとき溶融合成樹脂と栓体との間の融着が不完全な場合
があり、この隙間から水分などが侵入して金属管の腐食
が進み、また棒状物の端部を打撃して地中に打込むとき
などの場合に破損を来たす原因ともなっている。However, when covering with molten synthetic resin using the above-mentioned plug, the fusion between the molten synthetic resin and the plug may be incomplete, and moisture may enter through this gap, causing corrosion of the metal pipe. This also causes damage when the end of a stick is struck and driven into the ground.
本願発明者は、上記融着不良を生ずる原因が溶融被覆合
成樹脂と栓体間に空気が残存介在すること、および栓体
の熱容量と溶融合成樹脂の保有する熱量との相対的関係
によるものであることを見出し、本発明を完成するに至
った。The inventor of the present application believes that the cause of the defective fusion described above is due to the presence of air remaining between the molten coating synthetic resin and the plug, and the relative relationship between the heat capacity of the plug and the amount of heat held by the molten synthetic resin. They discovered something and completed the present invention.
本発明の目的は、合成樹脂棒状物両端部の栓体が被覆合
成i脂と隙間なく一体的に融着し、岑食等のおそれがな
く、強度も(憂れた合成樹脂棒状物の製造方法を提供す
ることに在る。The object of the present invention is that the plugs at both ends of the synthetic resin rod are integrally fused with the coating synthetic resin without any gaps, and there is no risk of corrosion etc. The purpose is to provide a method.
不発1川の要旨は、隣接する両金属管の端間に合成樹脂
製栓体を嵌挿し金属管外周および栓体を合成樹脂で連続
して押出被覆後、栓体の中間部を切断することよりなる
合成樹脂棒状物の製造方法において、金属管内壁(こ栓
体ストッパーを突設し、金属管に嵌挿し・得る外周径と
した栓体を金属管に嵌挿し、前記栓体ストッパーに係止
せしめる構成に在る。即ち両端部が金属管の内部断面形
状とほぼ同一の断面形状とした合成樹脂製栓体を金属管
に嵌挿し、金属管内壁に突設されている栓体ストッパー
に栓体端面を当、接させ係j1−させるものである。The gist of misfire 1 river is to fit a synthetic resin stopper between the ends of both adjacent metal pipes, cover the outer periphery of the metal pipe and the stopper with synthetic resin by extrusion, and then cut the middle part of the stopper. In the method of manufacturing a synthetic resin rod-shaped article, a stopper is provided on the inner wall of a metal tube (the stopper is protruding from the inner wall of the metal tube), and a stopper having an outer circumferential diameter that can be obtained by fitting into the metal tube is inserted into the metal tube, and the stopper is engaged with the stopper. In other words, a synthetic resin stopper with both ends having a cross-sectional shape that is almost the same as the internal cross-sectional shape of the metal tube is inserted into the metal tube, and the stopper is inserted into the stopper that protrudes from the inner wall of the metal tube. The end surfaces of the plug are brought into contact and brought into contact.
栓体胴部の径をほぼ金属管内径と等しくシ、または細く
することにより、栓体の体積に比例する栓体の熱容量は
、従来の栓体径を金属管外径と等しくした場合に較べ大
きく低減される。また溶融樹脂による被覆の進行に伴な
い、溶融被覆樹脂とに体との間の空気は連続的に後続す
る金属管の内外面を経て追出され、空気層が介在しない
ので、被覆合成樹脂と栓体間のFIIi、善り(−は飛
躍的に増大される。By making the diameter of the plug body approximately equal to the inner diameter of the metal tube or narrower, the heat capacity of the plug body, which is proportional to the volume of the plug, is increased compared to the conventional case where the diameter of the plug body is equal to the outside diameter of the metal tube. greatly reduced. In addition, as the coating with the molten resin progresses, the air between the molten coating resin and the body is continuously expelled through the inner and outer surfaces of the metal tube that follows, and there is no intervening air layer. The FIIi between the plug bodies (-) is dramatically increased.
なお、栓体胴部に少なくとも1条の環形凹溝または螺旋
形凹溝を設けて溝内に溶融合成樹脂を導入し、融着を一
層強固にすることができる。Note that at least one annular groove or a spiral groove can be provided in the body of the plug body, and the molten synthetic resin can be introduced into the groove to further strengthen the fusion bond.
また栓体は、上述の如く金属管内径に等しくするか、栓
体全外周あるいは第6図に示すように中央部を細くする
など外周の部分的にわたって金属管内径より細くして用
いることができる。次に、本発明においては金属管内に
嵌挿された栓体を、管内壁に突設した栓体ストッパーに
係止させるものであり、以下(こその実施態様を示す。In addition, the stopper may be made equal to the inner diameter of the metal pipe as described above, or may be made thinner over the entire outer circumference of the stopper or a part of the outer circumference, such as by narrowing the center part as shown in Fig. 6. . Next, in the present invention, a stopper inserted into a metal tube is locked with a stopper provided protruding from the inner wall of the pipe.
第1の例として、第1図は金属管間[」端からの正面図
、第2図は栓体嵌挿後溶融合成樹脂て被覆した状態(こ
おける栓体部縦断面図を示し、金属管1の内壁に、溶接
等により金属製の突起が取イ・1けられ、栓体ス1−ツ
バ−2を形成し、この突起に、栓体3の端面が当接し係
止する。4は合成樹脂被覆層を示す。栓体ストッパーと
しては、第3図に示すように金属管外周部からスポット
的に強く管壁を押圧し、内壁に対応部分を突出させ栓体
ストッパー2としてもよい。この第3図では4個所設け
られているが、適宜個数でよく、さらに環状に押圧狭搾
し、内壁に環状突出部を形成せしめて栓体ストッパーと
してもよい。また第4図斜視図に示すように、金属管端
部に縦(こ切込みを入れて生した細長い管壁片を内側に
新曲して栓体ストッパー2とし、第5図に示すように金
属管に透孔5を貫き設けて、この透孔(こ棒を貫通固着
させ栓体ストッパーとし、図示のように管の対壁まで棒
を貫通させてもよい。棒としては、金属、木1合成樹脂
被覆時の高温に胴える充分な強度を持つ熱硬化樹脂製落
胆などを用いることができる。As a first example, Fig. 1 is a front view from the end between the metal pipes, and Fig. 2 shows a longitudinal cross-sectional view of the plug body covered with molten synthetic resin after the plug body has been inserted. A metal protrusion is removed by welding or the like on the inner wall of the pipe 1 to form a stopper 1-flange 2, and the end surface of the stopper 3 abuts and locks on this protrusion.4. indicates a synthetic resin coating layer.As a plug stopper, as shown in Fig. 3, the plug stopper 2 may be formed by strongly pressing the pipe wall in spots from the outer circumference of the metal pipe and protruding the corresponding portion from the inner wall. In this figure 3, there are four places, but any number may be used, and the stopper may be formed by pressing and squeezing it into an annular shape and forming an annular protrusion on the inner wall to form a stopper. As shown in FIG. 5, a long thin tube wall piece made by making a vertical cut at the end of the metal tube is bent inward to form a plug stopper 2, and a through hole 5 is drilled through the metal tube as shown in FIG. Then, you can fix a rod through this through hole and use it as a plug stopper, and the rod can be passed through to the opposite wall of the pipe as shown in the figure. It is possible to use a thermosetting resin material having sufficient strength to hold the material.
以上、栓体ストッパを例示したが、栓体ス1−ツバ−は
、これらに限定されるものではなく、要は金属管内壁に
突出し、栓体端面と当接し、係止させるものであればよ
い。Although the plug stopper has been illustrated above, the plug stopper is not limited to these, but in short, it can be anything that protrudes from the inner wall of the metal pipe, comes into contact with the end surface of the plug, and locks the stopper. good.
本発明は上述のような構成を有するので、栓体の熱容量
が従来より小さく、かつ被覆合成樹脂と栓体間に空気層
が残存介在しないので、栓体と被覆合成樹脂間の融着力
が飛躍的に増大し、融着不良を防止することができる。Since the present invention has the above-mentioned configuration, the heat capacity of the plug is smaller than that of the conventional one, and there is no remaining air layer between the covering synthetic resin and the plug, so the fusion strength between the plug and the covering synthetic resin is dramatically increased. It is possible to prevent poor fusion.
また栓体と被覆合成!脂とは一体的に融着しているので
、棒状物端部の機械的強度が増大し地中に打込む場合等
に〃f都合である。Also, the plug body and coating are synthesized! Since it is integrally fused with the oil, the mechanical strength of the end of the rod increases, which is convenient when driving it into the ground.
第1図は本発明に用いられる栓体ス1へツバ−を設けた
金属管の開口端からの正面図で、第2図は合成樹脂被覆
後の栓体部の縦断面図、第3図ないし第5図は、別の栓
体ストッパーを設けた金属管の一部切欠き斜視図で、第
6図は他の形状の栓体を用いたときの栓体部縦断面図で
ある。
1・・・・金属管、2・・・・栓体ストッパー。
3・・・・栓体、4・・・・合成樹脂被覆層、5・・・
・透孔。
特許出願人 ゼオン化成株式会社
代理人 弁理士 松永圭司Fig. 1 is a front view from the open end of a metal tube provided with a collar on the stopper S1 used in the present invention, Fig. 2 is a longitudinal cross-sectional view of the stopper after being coated with synthetic resin, and Fig. 3 5 to 5 are partially cutaway perspective views of a metal tube provided with another stopper, and FIG. 6 is a longitudinal sectional view of the stopper when a stopper of another shape is used. 1...Metal pipe, 2...Bung stopper. 3...Plug body, 4...Synthetic resin coating layer, 5...
・Through hole. Patent applicant Zeon Kasei Co., Ltd. Patent attorney Keiji Matsunaga
Claims (1)
金属管外周および栓体を合成樹脂で連続して押出被覆後
、栓体の中間部を切断することよりなる合成樹脂棒状物
の製造方法において、金属管内壁に栓体ストッパーを突
設し、金属管に嵌挿し得る外周径とした栓体を金属管に
嵌挿し前記栓体ストッパーに係止せしめることを特徴と
する金属管で補強された合成樹脂棒状物の製造方法。1. A synthetic resin rod is made by inserting a synthetic resin stopper between the ends of two adjacent metal tubes, continuously extruding the outer circumference of the metal tube and the stopper with synthetic resin, and then cutting the middle part of the stopper. A method of manufacturing a metal product, characterized in that a stopper is provided protruding from the inner wall of a metal tube, and the stopper has an outer circumferential diameter that can be fitted into the metal tube, and the stopper is inserted into the metal tube and locked with the stopper. A method for producing synthetic resin rods reinforced with tubes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57115598A JPS597029A (en) | 1982-07-05 | 1982-07-05 | Preparation of synthetic resin rod reinforced by metal tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57115598A JPS597029A (en) | 1982-07-05 | 1982-07-05 | Preparation of synthetic resin rod reinforced by metal tube |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS597029A true JPS597029A (en) | 1984-01-14 |
JPS6248565B2 JPS6248565B2 (en) | 1987-10-14 |
Family
ID=14666580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57115598A Granted JPS597029A (en) | 1982-07-05 | 1982-07-05 | Preparation of synthetic resin rod reinforced by metal tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS597029A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59204525A (en) * | 1983-05-06 | 1984-11-19 | Takiron Co Ltd | Preparation of synthetic resin coated pipe |
JPS62131973A (en) * | 1985-12-03 | 1987-06-15 | Mazda Motor Corp | Device for controlling ignition timing for engine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4935817A (en) * | 1972-08-07 | 1974-04-03 |
-
1982
- 1982-07-05 JP JP57115598A patent/JPS597029A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4935817A (en) * | 1972-08-07 | 1974-04-03 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59204525A (en) * | 1983-05-06 | 1984-11-19 | Takiron Co Ltd | Preparation of synthetic resin coated pipe |
JPS62131973A (en) * | 1985-12-03 | 1987-06-15 | Mazda Motor Corp | Device for controlling ignition timing for engine |
Also Published As
Publication number | Publication date |
---|---|
JPS6248565B2 (en) | 1987-10-14 |
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