【発明の詳細な説明】［産業上の利用分野］この発明は、熱収縮チューブの連続製造方法に関するも
ので、特に冷却部分の冷却能力を向上させるものである
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for continuously manufacturing a heat-shrinkable tube, and particularly to improving the cooling capacity of a cooling section.
［従来の技術］第２図に連続製造装置の概略を示す。[Conventional technology]Figure 2 shows an outline of the continuous manufacturing equipment.
ｌＯは押出し部で、１２は押出し機。lO is the extrusion part,12 is an extruder.
１４はクロスへラドダイ、１６はマンドレル、１８はヒータである。14 is Raddai to the cross,16 is a mandrel,18 is a heater.
また、２０は架橋部で、２２は加熱筒。In addition, 20 is a crosslinked part,22 is a heating cylinder.
２４はヒータである。24 is a heater.
また、３０は拡ｆ￥部で、３２は拡径部グイである。Also, 30 is the enlarged f\ section,Reference numeral 32 is an enlarged diameter guide.
また、４０は冷却部で、４２１よ冷却筒、４４は冷却水（ジャケット）である。Also, 40 is a cooling section,421, cooling cylinder,44 is cooling water (jacket).
５０はピンチロール、５２は潤滑油５４のタンク、５６は高圧ガス５８の供給源である。50 is pinch roll,52 is a tank for lubricating oil 54;56 is a supply source of high pressure gas 58.
・その作用：（１）押出し機１２により未架橋プラスチック６０を押
出す。- Its function: (1) The uncrosslinked plastic 60 is extruded by the extruder 12.
６１は未架橋の元チューブを示す。61 indicates an uncrosslinked original tube.
なお、そのとき、元チューブ６１の外側に潤滑油５４を
供給し、クロスヘツドダイ１４その他のグイとの間の摩
擦を小にする。At this time, lubricating oil 54 is supplied to the outside of the base tube 61 to reduce the friction between the crosshead die 14 and other gougs.
また同時にガス源５６から高圧ガス５８を元チューブ６
１内に送りこむ。At the same time, high pressure gas 58 is supplied from the gas source 56 to the source tube 6.
Send it within 1.
（２）架橋部２０において、ヒーター２４により加熱し
て、未架橋の元チューブ６１を架橋する。(2) In the crosslinking section 20, the uncrosslinked original tube 61 is crosslinked by heating with the heater 24.
６２は架橋した元チューブを示す。62 indicates a crosslinked original tube.
（３）次に拡径部３０において、架橋部チューブ６２を
高圧ガス５８の圧により、所定の太さに拡径する。６３
は拡径チューブを示す。(3) Next, in the diameter expansion section 30, the diameter of the bridge tube 62 is expanded to a predetermined thickness by the pressure of the high pressure gas 58. 63
indicates an enlarged diameter tube.
（４）最後に、冷却部４０において、拡径チューブ６３
を冷却筒４２により外径規制しながら、冷却水４４によ
り冷却する。(4) Finally, in the cooling section 40, the enlarged diameter tube 63
is cooled with cooling water 44 while regulating the outer diameter with a cooling cylinder 42.
６４は冷却後の拡径チューブ、すなわち熱収縮チューブ
を示す。Reference numeral 64 indicates a diameter-expanded tube after cooling, that is, a heat-shrinkable tube.
（５）熱収縮チューブ６４を、ピンチロール５０で送り
出し、洗浄槽（図示せず）で潤滑油５４を除去し、巻取
る。(5) The heat-shrinkable tube 64 is sent out with the pinch rolls 50, the lubricating oil 54 is removed in a cleaning tank (not shown), and the tube is wound up.
［発明が解決しようとする問題点］冷却部４０における拡径チューブ６３の冷却は、冷却水
４４により外側から行っている。[Problems to be Solved by the Invention] The enlarged diameter tube 63 in the cooling section 40 is cooled from the outside using the cooling water 44.
そのため、（１）内側が冷えるまでに時間がかかり、冷却筒４２が
長くなる。Therefore, (1) It takes time for the inside to cool down, and the cooling tube 42 becomes longer.
（２）冷却筒４２が長くなると、潤滑油の粘度が大にな
り、摩擦力が大きくなる。(2) As the cooling cylinder 42 becomes longer, the viscosity of the lubricating oil increases and the frictional force increases.
［問題点を解決するための手段］この発明は、第１図のように、拡径チューブ６３の冷却に際して、その内側に冷却水７
０を入れ、この冷却水７０により拡径チューブ６３を直
接内側から冷却すること。[Means for Solving the Problems] As shown in FIG.
0, and the enlarged diameter tube 63 is directly cooled from the inside by this cooling water 70.
によって、上記の問題の解決を図ったものである。This is an attempt to solve the above problem.
［その説明］ピンチロール５０のところで、熱収縮チューブ６４は平
につぶれる。そのため、丁度袋の底ができたようになり
、その部分から上に木をためることができる。[Description] At the pinch roll 50, the heat shrink tube 64 is flattened. As a result, the bottom of the bag is formed, and wood can be stored above that point.
そこで、冷却水７０をパイプ７２により送り込み、拡径
チューブ６３の内側にため、この冷却水７０により、拡
径チューブ６３を内側から直接冷却する。Therefore, the cooling water 70 is sent through the pipe 72 and stored inside the enlarged diameter tube 63, and the enlarged diameter tube 63 is directly cooled from the inside by this cooling water 70.
冷却水７０は拡径チューブ６３の熱を受けて温度が上昇
する。そこで、もう１本のパイプ７４により冷却水７０
を外に出し、冷却機７６で冷却し、ポンプ７８で再び拡
径チューブ６３内に送り込み、循環させる。The temperature of the cooling water 70 increases as it receives heat from the enlarged diameter tube 63. Therefore, the cooling water 70 is connected to another pipe 74.
is taken out, cooled by a cooler 76, and fed into the enlarged diameter tube 63 again by a pump 78 for circulation.
なおそのとき、適当なレベルセンサ（図示せず）を使っ
て、冷却水７０の水面７１がいつも一定になるように、
送り込む（または送り出す）水の量を制御する。At that time, use an appropriate level sensor (not shown) to ensure that the water level 71 of the cooling water 70 is always constant.
Control the amount of water pumped in (or pumped out).
また、冷却機７６または循環量を７ＪＪｍして、冷却水
７０が最適の温度値を保持するようにする。In addition, the cooler 76 or the circulation amount is set to 7 JJm so that the cooling water 70 maintains an optimum temperature value.
なお、７５はチューブのガス圧をサポートするための二
つ割ガイドである。Note that 75 is a two-piece guide for supporting the gas pressure of the tube.
［発明の効果ｌ拡径チューブ６３の冷却に際して、その内側に冷却水７
０を入れ、この冷却水７０により拡径チューブ６３を直
接内側から冷却するようにしたので、冷却に必要な時間
が短くなり、その結果、（１）冷却筒４２が短くてすむ
。[Effect of the invention l When cooling the enlarged diameter tube 63, the cooling water 7 is inside the enlarged diameter tube 63.
Since the expanded diameter tube 63 is directly cooled from the inside by the cooling water 70, the time required for cooling is shortened, and as a result (1) the cooling cylinder 42 can be shortened.
（２）冷却ｆｉ４２が短くできるので、拡径チューブ６
３との間の摩擦力が非常に小さくなる。(2) Since the cooling fi 42 can be shortened, the expanded diameter tube 6
The frictional force between 3 and 3 becomes very small.
（３）冷却筒４２が短いので、製造装置が非常にコンパ
クトになる。(3) Since the cooling tube 42 is short, the manufacturing apparatus becomes very compact.
第１図は本発明の実施例の説ＩＩ図、第２図は従来技術の説明図。ｌＯ：押出し部 １２：押出し機１４：クロスへットタイ １６：マンドレル１８：ヒー
ター ２０：架橋部２２：加熱筒 ２４：ヒーター３０：拡径部
３２：拡径部グイ４０：冷却部 ４２：冷
却筒４４：冷却水 ５０：ピンチロール５２：潤滑油
タンク ５４：簡滑ｋｂ５６：高圧ガスｇ ５８：高圧力′ス６０：未架橋
プラスチック６１：元チューブ６２：架橋元チューブ６３：拡径チュ
ーブ６４：冷却後の拡径チューブ（熱収縮チューブ）７吐冷
却水 ７１二水面７２ 、７４ ：パイプ ７５：二つ割ガイド７６：冷
却機FIG. 1 is an explanatory diagram II of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of a prior art. lO: Extrusion section 12: Extruder 14: Cross head tie 16: Mandrel 18: Heater 20: Bridge section 22: Heating cylinder 24: Heater 30: Expanded diameter section
32: Expanded diameter part guide 40: Cooling part 42: Cooling tube 44: Cooling water 50: Pinch roll 52: Lubricant oil tank 54: Simplified kb 56: High pressure gas g 58: High pressure' gas 60: Uncrosslinked plastic 61: Original tube 62: Crosslinking source tube 63: Expanded diameter tube 64: Expanded diameter tube after cooling (heat shrink tube) 7 discharge cooling water 71 Two water surfaces 72, 74: Pipe 75: Bifurcated guide 76: Cooler
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27254187AJPH01114418A (en) | 1987-10-28 | 1987-10-28 | Manufacture of heat-shrinkable tube |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27254187AJPH01114418A (en) | 1987-10-28 | 1987-10-28 | Manufacture of heat-shrinkable tube |
| Publication Number | Publication Date |
|---|---|
| JPH01114418Atrue JPH01114418A (en) | 1989-05-08 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27254187APendingJPH01114418A (en) | 1987-10-28 | 1987-10-28 | Manufacture of heat-shrinkable tube |
| Country | Link |
|---|---|
| JP (1) | JPH01114418A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6197239B1 (en) | 1995-06-26 | 2001-03-06 | Nextrom Holding S.A. | Extrusion apparatus and method for orienting plastic material by using an extrusion apparatus |
| US6203651B1 (en) | 1995-09-20 | 2001-03-20 | Uponor Innovation Ab | Method and apparatus for making an extrusion product, and an extrusion product |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6197239B1 (en) | 1995-06-26 | 2001-03-06 | Nextrom Holding S.A. | Extrusion apparatus and method for orienting plastic material by using an extrusion apparatus |
| US6203651B1 (en) | 1995-09-20 | 2001-03-20 | Uponor Innovation Ab | Method and apparatus for making an extrusion product, and an extrusion product |
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