JPH0627123U - Molding device for extruded synthetic resin tube - Google Patents
Molding device for extruded synthetic resin tubeInfo
- Publication number
- JPH0627123U JPH0627123U JP063708U JP6370892U JPH0627123U JP H0627123 U JPH0627123 U JP H0627123U JP 063708 U JP063708 U JP 063708U JP 6370892 U JP6370892 U JP 6370892U JP H0627123 U JPH0627123 U JP H0627123U
- Authority
- JP
- Japan
- Prior art keywords
- shaping
- synthetic resin
- cooling
- tubular body
- cooling water
- 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
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
(57)【要約】
【目的】 押出金型から押出された合成樹脂管体を冷却
賦形するにあたり、合成樹脂管体の表面に微小凹凸が発
生しない賦形装置を提供する。
【構成】 押出成形された合成樹脂管体Ａを所定の管形
状と寸法に賦形しながら通過するようにした賦形用筒状
体３と、この賦形用筒状体の押出金型側端部に設置さ
れ、内部に環状の冷却水通路２を有する冷却環体１とか
らなり、上記冷却環体１の押出金型より遠い側の側壁の
全周にわたって、環状の冷却水通路に連通するスリット
もしくは複数の貫通孔１１が設けられている。
(57) [Summary] [Object] To provide a shaping device in which minute irregularities do not occur on the surface of a synthetic resin tube when cooling and shaping the synthetic resin tube extruded from an extrusion die. [Structure] A tubular body for shaping 3 which passes through an extruded synthetic resin tubular body A while shaping it into a predetermined tubular shape and size, and an extrusion die side of the tubular body for shaping. The cooling ring body 1 is provided at an end portion and has an annular cooling water passage 2 therein. The cooling ring body 1 communicates with the annular cooling water passage over the entire circumference of the side wall of the cooling ring body 1 on the side farther from the extrusion die. A slit or a plurality of through holes 11 are provided.
Description
【０００１】[0001]
本考案は、押出成形された合成樹脂管体の賦形装置に関し、該管体の表面の平 滑化と賦形の円滑化をはかるためのものである。 The present invention relates to an apparatus for shaping an extruded synthetic resin pipe, and is intended for smoothing the surface of the pipe and smoothing the shaping.
【０００２】[0002]
従来の押出成形された合成樹脂管体の賦形装置としては、実公平２−２８０３ ９号公報に示されているように、内面側に吸引口を設けて合成樹脂管体を吸引賦 形するとともに、合成樹脂管体を通過させるようにした筒状の賦形装置本体と、 この本体の押出金型側端部に設置され、内部に環状の冷却水通路を有する冷却環 体とを備えた賦形装置が知られている。 As a conventional apparatus for shaping an extruded synthetic resin tube, as shown in Japanese Utility Model Publication No. 2-28039, a suction port is provided on the inner surface side to shape the synthetic resin tube by suction. In addition, a main body of a cylindrical shaping device that allows the synthetic resin pipe to pass through, and a cooling ring installed at the end of the main body of the extrusion mold and having a circular cooling water passage inside are provided. A shaping device is known.
【０００３】 上記賦形装置にあっては、図４に示すとおり、図面において左側の図示してい ない押出金型から押出された未硬化の合成樹脂管体Ａ’は、環状の冷却水通路２ ａを有する冷却環体１ａの入口部に入り、その内面と同形状に賦形されつつ冷却 される。次いで、合成樹脂管体Ａ’は、賦形用筒状体３ａに進入して更に賦形さ れつつ冷却され、続いて、複数のシャワーノズル５ａから吐出される冷却水によ り冷却され、ほぼ完全に硬化して賦形装置を出ている。尚、４ａは、環状の吸引 口４ａであって、図示していない真空ポンプの真空吸引により合成樹脂管体Ａ’ を賦形用筒状体３ａの内周面に密着させるものであり、６ａは、賦形用筒状体３ ａ及び複数のシャワーノズル５ａを覆う筐体である。In the above-described shaping apparatus, as shown in FIG. 4, the uncured synthetic resin pipe A ′ extruded from an extrusion die (not shown) on the left side of the drawing has an annular cooling water passage 2 It enters the inlet portion of the cooling annulus 1a having a and is cooled while being shaped into the same shape as the inner surface thereof. Next, the synthetic resin tubular body A ′ is cooled while being further shaped by entering the shaping cylindrical body 3a, and subsequently cooled by cooling water discharged from the plurality of shower nozzles 5a. Almost completely cured and exited the shaping device. Designated by 4a is an annular suction port 4a for bringing the synthetic resin tubular body A'in close contact with the inner peripheral surface of the shaping tubular body 3a by vacuum suction of a vacuum pump (not shown). Is a casing that covers the shaping tubular body 3 a and the shower nozzles 5 a.
【０００４】[0004]
上記賦形装置における賦形用筒状体３ａは、シャワーノズル５ａから吐出する 冷却水によりその外周面が冷却され、そのことによって、合成樹脂管Ａ’は賦形 されるとともに冷却されるようになっている。 The outer peripheral surface of the shaping cylindrical body 3a in the shaping apparatus is cooled by the cooling water discharged from the shower nozzle 5a, whereby the synthetic resin pipe A ′ is shaped and cooled. Has become.
【０００５】 しかし、シャワーノズル５ａは詰まったりして噴出水量がばらついたり、シャ ワー角度の変化等に起因して噴出水が賦形用筒状体３ａの外周面に均一に降りか からなかったりして、賦形用筒状体３ａが均一に冷却されず、従って、賦形用筒 状体３ａの内面に接触して通過する合成樹脂管Ａ’が均一に冷却されなかった。However, the shower nozzle 5a may be clogged and the amount of jetted water may vary, or the jetted water may not evenly land on the outer peripheral surface of the shaping tubular body 3a due to changes in the shower angle or the like. Then, the shaping cylindrical body 3a was not uniformly cooled, and therefore, the synthetic resin pipe A'which passed in contact with the inner surface of the shaping cylindrical body 3a was not uniformly cooled.
【０００６】 このため、合成樹脂管Ａ’の表層部には、その軸方向に冷却むらが生じ、硬化 した部分と未硬化部分とが混在することになって、延ばされるところと延びない ところが出て、微小な凹凸が発生することが往々にして見られた。 また、この凹凸が発生すると、合成樹脂管Ａ’は賦形用筒状体３ａ内を円滑に 通過しなくなるという問題が生ずる。As a result, uneven cooling occurs in the surface layer of the synthetic resin pipe A ′ in the axial direction, and a cured portion and an uncured portion are mixed, and some portions are extended and some portions are not extended. Therefore, it was often seen that minute unevenness was generated. Further, if the unevenness occurs, the synthetic resin pipe A'cannot smoothly pass through the shaping cylindrical body 3a.
【０００７】 本考案は、上記の点に鑑み、均一な冷却が簡単に出来る、押出成形された合成 樹脂管の賦形装置を提供することを目的とする。In view of the above points, an object of the present invention is to provide an apparatus for shaping an extruded synthetic resin pipe, which can easily perform uniform cooling.
【０００８】[0008]
本考案者は、以上の点に鑑み種々検討した結果、押出成形された合成樹脂管体 を、所定の管形状と寸法に賦形しながら通過するようにした賦形用筒状体の外周 面に、冷却環体の冷却水通路の冷却水を導いて冷却することにより、上記課題を 解決し得ることを見出し本考案を完成した。 As a result of various studies in view of the above points, the inventor of the present invention has made an outer peripheral surface of a shaping tubular body that passes through an extruded synthetic resin tubular body while shaping it into a predetermined tubular shape and size. In addition, they have found that the above problems can be solved by guiding and cooling the cooling water in the cooling water passage of the cooling annulus, and completed the present invention.
【０００９】 すなわち、本考案の押出成形された合成樹脂管体の賦形装置は、内部に環状の 冷却水通路を有する冷却環体と、この冷却環体の内径とほぼ同じ内径を有する賦 形用筒状体とが同心に連結されてなる、押出成形された合成樹脂管体の賦形装置 において、冷却環体の賦形用筒状体側の側壁に、冷却環体の冷却水通路の冷却水 を賦形用筒状体の外周面に導く複数の貫通孔もしくはスリットが形成されている ことを特徴としている。That is, the apparatus for shaping an extruded synthetic resin pipe according to the present invention has a cooling ring body having an annular cooling water passage therein and a shaping body having an inner diameter substantially the same as the inner diameter of the cooling ring body. In an apparatus for shaping an extruded synthetic resin pipe, which is concentrically connected with a tubular body for cooling, a cooling water passage of the cooling ring body is cooled on a side wall of the cooling tubular body on the side of the tubular body for shaping. It is characterized in that a plurality of through holes or slits for guiding water to the outer peripheral surface of the shaping tubular body are formed.
【００１０】 上記賦形用筒状体は冷却環体と一体に製せられていてもよく、また、賦形用筒 状体から出た合成樹脂管体を更に冷却するためシャワーノズル等の冷却装置を備 えてもよい。The shaping tubular body may be made integrally with the cooling ring body, and in order to further cool the synthetic resin tubular body that has come out of the shaping tubular body, a cooling of a shower nozzle or the like is performed. It may be equipped with a device.
【００１１】 本考案賦形装置は、硬質塩化ビニル管、ポリエチレン管、ポリプロピレン管等 、押出成形により管状体が製造されている全ての合成樹脂管体に適用される。ま た、管状体の断面形状は円形に限らず、卵形状、楕円形状などの長円形であって もよい。The shaping apparatus of the present invention is applied to all synthetic resin pipes, such as hard vinyl chloride pipes, polyethylene pipes, polypropylene pipes, etc., of which tubular bodies are manufactured by extrusion molding. Moreover, the cross-sectional shape of the tubular body is not limited to a circular shape, and may be an oval shape such as an oval shape or an elliptical shape.
【００１２】[0012]
押出金型から押出された合成樹脂管体は、先ず冷却環体に進入する。ここで合 成樹脂管体の外周は、冷却環体の内周と同じ形状と寸法に賦形される。冷却環体 は、環状の冷却水用通路を流れる冷却水により冷却されているので、合成樹脂管 体は冷却を受けるが、その温度は未だその軟化温度よりも高い状態でこの部分を 通過する。 The synthetic resin tubular body extruded from the extrusion die first enters the cooling ring body. Here, the outer circumference of the synthetic resin tube body is shaped to have the same shape and size as the inner circumference of the cooling ring body. Since the cooling annulus is cooled by the cooling water flowing through the annular cooling water passage, the synthetic resin tube is cooled, but its temperature still passes through this portion at a temperature higher than its softening temperature.
【００１３】 合成樹脂管体は、次に冷却環体と同心に連結された賦形用筒状体に進入する。 賦形用筒状体は、冷却環体の側壁の複数の貫通孔もしくはスリットから流れ出る 冷却水により均一に冷却される。その結果、賦形用筒状体の内面に接触しつつ進 行する合成樹脂管体は、賦形されつつ均一に冷却されることになる。The synthetic resin tubular body then enters the shaping cylindrical body that is concentrically connected to the cooling ring body. The shaping tubular body is uniformly cooled by the cooling water flowing out from the plurality of through holes or slits in the side wall of the cooling ring body. As a result, the synthetic resin tubular body that advances while contacting the inner surface of the shaping tubular body is uniformly cooled while being shaped.
【００１４】 賦形用筒状体を通過した合成樹脂管体の温度は、少なくともその表層部につい ては、軟化温度以下に低下せしめられている。従って賦形用筒状体を通過した合 成樹脂管体は、次に必要に応じて冷却水のシャワーを浴びて冷却されるが、その シャワーによって表面が変形を受けることはない。このようにして所定の形状と 寸法を有する合成樹脂管体が製造される。The temperature of the synthetic resin tube that has passed through the shaping tubular body is lowered to the softening temperature or lower, at least for the surface layer portion thereof. Therefore, the synthetic resin pipe that has passed through the shaping tubular body is then cooled by showering with cooling water as needed, but the shower does not deform the surface. In this way, a synthetic resin tubular body having a predetermined shape and dimensions is manufactured.
【００１５】 このような均一冷却の結果として、合成樹脂管体の表面に従来発生し勝ちであ った凹凸がなくなり、賦形用筒状体中の合成樹脂管体の移動も円滑に行われる。As a result of such uniform cooling, the surface of the synthetic resin tube is free from the irregularities that have been apt to occur in the past, and the synthetic resin tube in the shaping tubular body can be moved smoothly. .
【００１６】[0016]
以下、本考案を実施例に基づいてさらに詳細に説明する。 図１は本考案に係わる賦形装置の実施例を示す縦断面図であり、図２は図１の ＩＩ−ＩＩ線における断面図である。 Hereinafter, the present invention will be described in more detail based on embodiments. 1 is a vertical sectional view showing an embodiment of a shaping apparatus according to the present invention, and FIG. 2 is a sectional view taken along line II-II in FIG.
【００１７】 図面において、１は冷却環体、３は賦形用筒状体であり、両者は一体に製せら れている。冷却環体１は図示していない押出金型側に配置されている。 冷却環体１には環状の冷却水通路２が設けられ、この冷却水通路２には供給管 ２１より冷却水が供給されるようになっている。In the drawings, 1 is a cooling ring body, 3 is a shaping cylindrical body, and both are integrally manufactured. The cooling ring body 1 is arranged on the extrusion die side (not shown). The cooling ring body 1 is provided with an annular cooling water passage 2, and the cooling water is supplied from the supply pipe 21 to the cooling water passage 2.
【００１８】 冷却環体１の賦形用筒状体側の側壁にはその全周にわたってほぼ等間隔に複数 の貫通孔１１が設けられ、冷却水がこの貫通孔１１を通って賦形用筒状体３の外 周面に流れ出るようにされている。 上記複数の貫通孔１１の代わりに、図３に示すとおり、側壁に全周にわたる環 状のスリット１２を設けてもよい。A plurality of through holes 11 are provided on the side wall of the cooling ring body 1 on the side of the shaping cylindrical body at substantially equal intervals over the entire circumference thereof, and cooling water passes through the through holes 11 and the shaping cylindrical shape. It is designed to flow to the outer surface of the body 3. Instead of the plurality of through holes 11, as shown in FIG. 3, a ring-shaped slit 12 may be provided on the side wall over the entire circumference.
【００１９】 賦形用筒状体３の内周面には、必要に応じて環状の吸引口を設け、この吸引口 部を減圧するようにしてもよい。 ６は、筒状の筐体であり、その周囲には、冷却水をシャワーする複数個のシャ ワー５が設けられている。If necessary, an annular suction port may be provided on the inner peripheral surface of the shaping cylindrical body 3, and the suction port portion may be depressurized. Reference numeral 6 denotes a tubular casing, around which a plurality of showers 5 for showering cooling water are provided.
【００２０】 図１の左方にある図示されていない押出金型で押出成形された合成樹脂管体Ａ は、冷却環体１に入り、その部分で最終形状に近い形状と寸法に賦形されると同 時に、環状の冷却水通路２を流れる冷却水により、その樹脂の軟化温度近くまで 冷却される。次に合成樹脂管体Ａは、賦形用筒状体３に進入する。この部分では 合成樹脂管体Ａは、環状の冷却水通路２から貫通孔１１もしくはスリット１２を 通って流出する冷却水によって冷却される賦形用筒状体３に接触して更に冷却さ れる。賦形用筒状体３を出た時点では少なくともその外層部の温度は、その樹脂 の軟化温度以下に冷却されている。A synthetic resin tube A extruded by an extrusion die (not shown) on the left side of FIG. 1 enters the cooling ring body 1 and is shaped into a shape and dimensions close to the final shape at that portion. At the same time, the cooling water flowing through the annular cooling water passage 2 cools the resin to a temperature close to the softening temperature. Next, the synthetic resin tubular body A enters the shaping tubular body 3. In this portion, the synthetic resin tubular body A comes into contact with the shaping tubular body 3 which is cooled by the cooling water flowing out from the annular cooling water passage 2 through the through hole 11 or the slit 12, and is further cooled. At the time of leaving the shaping cylindrical body 3, at least the temperature of the outer layer portion is cooled to the softening temperature of the resin or lower.
【００２１】 一方、流出する冷却水の、賦形用筒状体３の外周上の流速は、この賦形用筒状 体３の横断面上では一定となって、賦形用筒状体３は均一に冷却される。従って 、合成樹脂管体Ａの表層面も均一に冷却されることになる。On the other hand, the flow velocity of the cooling water flowing out on the outer periphery of the shaping tubular body 3 is constant on the cross section of the shaping tubular body 3, and thus the shaping tubular body 3 is obtained. Are cooled uniformly. Therefore, the surface layer surface of the synthetic resin tube A is also cooled uniformly.
【００２２】 具体的に、硬質塩化ビニル管の押出成形に本考案の賦形装置を使用したところ 、硬質塩化ビニル管の押出成形時に、従来問題であった管表面の微小な凹凸の発 生がなくなり、平滑な表面の硬質塩化ビニル管を円滑に押出成形することが出来 た。Specifically, when the shaping apparatus of the present invention was used for extrusion molding of a hard vinyl chloride pipe, when the rigid vinyl chloride pipe was extrusion-molded, the generation of minute irregularities on the pipe surface, which was a conventional problem, occurred. It was possible to smoothly extrude a hard vinyl chloride pipe with a smooth surface.
【００２３】[0023]
本考案の賦形装置によれば、合成樹脂管体の押出成形における不均一冷却の問 題が無くなり、これに付随して生ずる製品表面の凹凸や、さらにはこの凹凸によ る賦形装置と製品との抵抗の増加の問題も解消される。 この結果、合成樹脂管体の押出成形は円滑に行われるようになり、同時に凹凸 のない表面の平滑な製品が得られるようになる。 According to the shaping apparatus of the present invention, the problem of non-uniform cooling in extrusion molding of synthetic resin pipes is eliminated, and the unevenness of the product surface caused by it is eliminated. The problem of increased resistance with the product is also eliminated. As a result, the extrusion molding of the synthetic resin tubular body can be carried out smoothly, and at the same time, a product having a smooth surface without unevenness can be obtained.
【図１】本考案に係わる押出成形された合成樹脂管体の
賦形装置の縦断面図である。FIG. 1 is a vertical cross-sectional view of an apparatus for shaping an extrusion-molded synthetic resin tube according to the present invention.
【図２】図１のＩＩ−ＩＩ線における断面図である。FIG. 2 is a sectional view taken along line II-II in FIG.
【図３】他の実施例の図２に相当する部分の断面図であ
る。FIG. 3 is a sectional view of a portion corresponding to FIG. 2 of another embodiment.
【図４】従来の押出成形された合成樹脂管体の賦形装置
の縦断面図である。FIG. 4 is a vertical cross-sectional view of a conventional apparatus for shaping an extrusion-molded synthetic resin tube.
１、１ａ 冷却環体 １１ 貫通孔 １２ スリット ２、２ａ 環状の冷却水通路 ３、３ａ 賦形用筒状体 ５、５ａ シャワーノズル 1, 1a Cooling ring body 11 Through hole 12 Slit 2, 2a Ring-shaped cooling water passage 3, 3a Shaped tubular body 5, 5a Shower nozzle
Claims (1)
体と、この冷却環体の内径とほぼ同じ内径を有する賦形
用筒状体とが同心に連結されてなる、押出成形された合
成樹脂管体の賦形装置において、冷却環体の賦形用筒状
体側の側壁に、冷却環体の冷却水通路の冷却水を賦形用
筒状体の外周面に導く貫通孔もしくはスリットが形成さ
れていることを特徴とする、押出成形された合成樹脂管
体の賦形装置。1. An extruded molding comprising a cooling ring body having an annular cooling water passage therein and a shaping cylindrical body having an inner diameter substantially the same as the inner diameter of the cooling ring body, which are concentrically connected to each other. In a shaping device for a synthetic resin pipe body, a through hole or a slit for guiding cooling water in a cooling water passage of the cooling ring body to the outer peripheral surface of the shaping cylinder body on a side wall of the cooling ring body on the shaping cylinder body side. An apparatus for shaping an extrusion-molded synthetic resin pipe body, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP063708U JPH0627123U (en) | 1992-09-11 | 1992-09-11 | Molding device for extruded synthetic resin tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP063708U JPH0627123U (en) | 1992-09-11 | 1992-09-11 | Molding device for extruded synthetic resin tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0627123U true JPH0627123U (en) | 1994-04-12 |
Family
ID=13237151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP063708U Pending JPH0627123U (en) | 1992-09-11 | 1992-09-11 | Molding device for extruded synthetic resin tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0627123U (en) |
-
1992
- 1992-09-11 JP JP063708U patent/JPH0627123U/en active Pending
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