JP2731799B2 - Extrusion coating method of resin - Google Patents
Extrusion coating method of resinInfo
- Publication number
- JP2731799B2 JP2731799B2 JP1143917A JP14391789A JP2731799B2 JP 2731799 B2 JP2731799 B2 JP 2731799B2 JP 1143917 A JP1143917 A JP 1143917A JP 14391789 A JP14391789 A JP 14391789A JP 2731799 B2 JP2731799 B2 JP 2731799B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- variable resistor
- coating method
- layers
- flow
- 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 - Fee Related
Links
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ 本発明は、線条体、例えばケーブル導体等に樹脂を多
層等として被覆させる樹脂の押出被覆方法に関するもの
である。Description: TECHNICAL FIELD The present invention relates to a resin extrusion coating method for coating a striated body, for example, a cable conductor or the like with a resin as a multilayer.
＜従来の技術＞ 従来、例えば第３図に示したように、ケーブル導体21
等にあっては、複数層（例えば５層）の被覆層22〜26を
施す必要がある場合が多い。そして、複数層のうち、幾
つかは、同一材料層からなる場合もある。<Prior Art> Conventionally, as shown in FIG.
In many cases, it is necessary to provide a plurality of (for example, five) coating layers 22 to 26. Some of the plurality of layers may be made of the same material layer.
＜発明が解決しようとする課題＞ ところが、従来、このような場合にも、被覆層が５層
であれば、一般には、５台の押出機を用いて押し出しを
行っていた。このため、このような従来の被覆方法で
は、各層に対応した押出機が必要である等、設備費が嵩
むこと、広い設置スペースが必要であること等の問題が
あった。<Problems to be Solved by the Invention> However, conventionally, even in such a case, if there are five coating layers, extrusion is generally performed using five extruders. For this reason, such a conventional coating method has problems such as the necessity of an extruder corresponding to each layer, the increase in equipment costs, and the necessity of a wide installation space.
本発明は、このような従来の実情に鑑みてなされたも
のである。The present invention has been made in view of such a conventional situation.
＜課題を解決するための手段＞ かゝる本発明の一つは、１本の線条体に複数層の押出
樹脂を被覆させる樹脂の押出被覆方法において、１台の
押出機の複数層に押出可能とするクロスヘッドに、１又
は２台以上の押出機の樹脂供給管を分流器及び分岐管を
通じて連通させると共に、当該分岐管の一方の途中に、
外筒中に樹脂供給用の隙間を持って挿入されたマスター
コアとこのマスターコアのセンターの貫通穴に摺動自在
に挿入されてその先端と外筒の樹脂供給口との離間間隔
により流量比を変える圧力調整ロッドとからなり、この
圧力調整ロッドの進退が調整部によって行われる流動抵
抗調整用の可変抵抗器を設け、前記１又は２台以上の押
出機からの押出樹脂を前記分流器により複数の方向に分
流させ、この各分流樹脂を、前記可変抵抗器により流動
抵抗を調整して、１本の線条体に複数層として被覆させ
ることを特徴とする樹脂の押出被覆方法にある。<Means for Solving the Problems> One of the present inventions is a resin extrusion coating method for coating a single striated body with a plurality of layers of extruded resin. A resin feed pipe of one or more extruders is connected to a crosshead to be extrudable through a flow divider and a branch pipe, and in the middle of one of the branch pipes,
The master core inserted into the outer cylinder with a gap for resin supply and the master core is slidably inserted into the through hole in the center of the master core, and the flow rate is determined by the separation distance between the tip and the resin supply port of the outer cylinder. A variable resistor for adjusting the flow resistance in which the pressure adjusting rod is moved forward and backward by an adjusting unit, and a plurality of extruded resins from the one or more extruders are provided by the flow divider. , And the flow resistance of each of the divided resins is adjusted by the variable resistor to coat a single striated body in a plurality of layers.
本発明のもう一つは、複数の線条体に複数層の押出樹
脂を被覆させる樹脂の押出被覆方法において、１台の押
出機の複数層に押出可能とするクロスヘッドに、１又は
２台以上の押出機の樹脂供給管を分流器及び分岐管を通
じて連通させると共に、当該分岐管の一方の途中に、外
筒中に樹脂供給用の隙間を持って挿入されたマスターコ
アとこのマスターコアのセンターの貫通穴に摺動自在に
挿入されてその先端と外筒の樹脂供給口との離間間隔に
より流量比を変える圧力調整ロッドとからなり、この圧
力調整ロッドの進退が調整部によって行われる流動抵抗
調整用の可変抵抗器を設け、前記１又は２台以上の押出
機からの押出樹脂を前記分流器により複数の方向に分流
させ、この各分流樹脂を、前記可変抵抗器により流動抵
抗を調整して、複数の線条体に複数層として被覆させる
ことを特徴とする樹脂の押出被覆方法にある。Another aspect of the present invention is a resin extrusion coating method in which a plurality of filaments are coated with a plurality of layers of extruded resin, wherein one or two crossheads capable of being extruded into a plurality of layers of one extruder are provided. The resin supply pipe of the above extruder is communicated through a flow divider and a branch pipe, and a master core inserted into an outer cylinder with a gap for resin supply in the middle of one of the branch pipes and a center of the master core. And a pressure adjusting rod which is slidably inserted into the through-hole and changes the flow rate ratio according to the clearance between the tip and the resin supply port of the outer cylinder. A variable resistor for adjustment is provided, and the extruded resin from the one or more extruders is divided in a plurality of directions by the flow divider, and the flow resistance of each divided resin is adjusted by the variable resistor. And multiple In extrusion coating method of a resin, characterized in that to the coating as multiple layers in the striatum.
＜作用＞ このように本発明では、分流器、分岐管、及び分岐管
側から供給される押出樹脂の流動抵抗を調整する具体的
な構造の流動抵抗調整用の可変抵抗器によって、複数の
分流樹脂が得られるため、同一線条体の複数層の被覆
に、あるいは複数の線条体の被覆に最少限の押出機を用
いることで対応することができる。<Operation> As described above, in the present invention, the flow divider, the branch pipe, and the variable resistor for flow resistance adjustment having a specific structure for adjusting the flow resistance of the extruded resin supplied from the branch pipe side have a plurality of flow branches. Since a resin is obtained, it is possible to cover a plurality of layers of the same striatum or to cover a plurality of striatum by using a minimum extruder.
＜実施例＞ 第１は本発明に係る樹脂の押出被覆方法を実施するた
めの装置系の一例を示したものである。<Example> First, an example of an apparatus system for performing the resin extrusion coating method according to the present invention is shown.
図において、1,2,3は３台の押出機、４はこれらの押
出機１〜３からの樹脂が供給されるクロスヘッド、５は
押出機2,3の樹脂供給管2a,3aが接続された分流器、６は
分流器５から分岐された分岐管７の一方の途中に挿入、
設置された流動抵抗調整用の可変抵抗器、８はクロスヘ
ッド４と架橋筒（図示省略）側とを接続させるスプライ
スボックスである。In the figure, 1, 2, and 3 are three extruders, 4 is a crosshead to which the resin from these extruders 1 to 3 is supplied, and 5 is a resin supply pipe 2a and 3a of the extruders 2 and 3 is connected. Shunt 6 is inserted into one of the branch pipes 7 branched from the shunt 5,
The installed variable resistor 8 for adjusting the flow resistance is a splice box for connecting the crosshead 4 to the bridge cylinder (not shown).
上記分流器５の内部は、第２図に示したように、樹脂
流路Ｌが概略Ｙ字型として２方向に分岐されてなる。一
方、可変抵抗器６の内部は、やはり第２図に示したよう
に、外筒10中に樹脂供給用の隙間ｌを持って挿入された
マスターコア11と、このマスターコア11のセンターの貫
通穴に摺動自在に挿入され、その先端12aと外筒10の樹
脂供給口13との離間間隔により、流量比を変える圧力調
整ロッド12とからなり、このロッド12の進退（上下動）
は、ネジシャフト等の調整部14により行われるようにな
っている。As shown in FIG. 2, the inside of the flow divider 5 has a resin flow path L that is branched in two directions as a substantially Y-shape. On the other hand, inside the variable resistor 6, as also shown in FIG. 2, a master core 11 inserted into the outer cylinder 10 with a gap 1 for supplying resin, and a through hole of the center of the master core 11. It is slidably inserted into the hole, and comprises a pressure adjusting rod 12 that changes the flow rate ratio depending on the distance between the tip 12a and the resin supply port 13 of the outer cylinder 10. The rod 12 moves forward and backward (moves up and down).
Is performed by an adjusting unit 14 such as a screw shaft.
次に、この装置系により、本発明方法を実施し、例え
ば上述した第３図のケーブル導体21上に５層の被覆層22
〜26を被覆し、かつその際、被覆層22と被覆層26、被覆
層23と被覆層25とを同一樹脂材料とした場合について説
明する。Next, the method according to the present invention is carried out by this device system, for example, by forming five coating layers 22 on the cable conductor 21 shown in FIG.
26, and the coating layer 22 and the coating layer 26, and the coating layer 23 and the coating layer 25 are made of the same resin material.
先ず、クロスヘッド４にケーブル導体21をセットし、
矢印Ａ方向に走行させる。この状態で、押出機２からの
樹脂を分流器５により２方向に分岐させ、クロスヘッド
４中を通じて、被覆層22および被覆層26として同一樹脂
を供給する。また、押出機３からの樹脂も分流器５によ
り２方向に分岐させ、クロスヘッド４中を通じて、被覆
層23および被覆層25としてやはり同一樹脂を供給する。
さらに、押出機１からの樹脂は、そのままクロスヘッド
４中を通じて、被覆層24として供給する。First, the cable conductor 21 is set on the crosshead 4,
The vehicle is driven in the direction of arrow A. In this state, the resin from the extruder 2 is branched by the flow divider 5 in two directions, and the same resin is supplied as the coating layer 22 and the coating layer 26 through the crosshead 4. The resin from the extruder 3 is also branched in two directions by the flow divider 5, and the same resin is supplied as the coating layers 23 and 25 through the crosshead 4.
Further, the resin from the extruder 1 is supplied as it is as a coating layer 24 through the crosshead 4.
これにより、合計３台の押出機１〜３で、５層の被覆
層22〜26を同時に押出被覆することができる。This makes it possible to simultaneously extrude and coat the five coating layers 22 to 26 with three extruders 1 to 3 in total.
この被覆時、２方向に分岐され分流樹脂の流動抵抗の
調整は、可変抵抗器６の調整部14により圧力調整ロッド
12を進退させて、適宜行えばよい。During this coating, the flow resistance of the branched resin branched in two directions is adjusted by the pressure adjusting rod by the adjusting unit 14 of the variable resistor 6.
What is necessary is just to make 12 move forward and backward, and to perform it suitably.
なお、上記実施例では、１台の押出機から分岐された
分流樹脂を、同一ケーブル導体21に多層構造に被覆する
場合であったが、本発明は、これに限定されず、例え
ば、工場内に比較的近接して同一のケーブル製造工程が
複数列設置されている場合、１台の押出機から分岐され
た分流樹脂を、複数のケーブル導体に供給する等のケー
スに応用することも可能である。勿論、この場合も、分
流樹脂の流動抵抗を調整するには、適宜可変抵抗器６を
導入すればよい。いずれにしても、これにより、押出機
の設置台数を低減させることができる。Note that, in the above-described embodiment, the case where the same cable conductor 21 is coated in a multilayer structure with the branch resin branched from one extruder has been described. However, the present invention is not limited to this. In the case where the same cable manufacturing process is installed in a plurality of rows relatively close to the extruder, it can be applied to a case where the branched resin branched from one extruder is supplied to a plurality of cable conductors. is there. Of course, in this case as well, in order to adjust the flow resistance of the divided resin, the variable resistor 6 may be appropriately introduced. In any case, this makes it possible to reduce the number of extruders installed.
＜発明の効果＞ 以上の説明から明らかなように本発明に係る樹脂の押
出被覆方法によれば、次のような優れた効果が得られ
る。<Effects of the Invention> As is clear from the above description, according to the extrusion coating method of the resin according to the present invention, the following excellent effects can be obtained.
（１）押出機の分流器、分岐管、及び分岐管側から供給
される押出樹脂の流動抵抗を調整する具体的な構造の流
動抵抗調整用の可変抵抗器によって、複数の流動抵抗の
調整された分流樹脂が得られるため、同一線条体の複数
層の被覆に、あるいは複数の線条体の被覆に最少限の押
出機で対応することができる。従って、設備費の大幅な
低減を図ることができる。(1) A plurality of flow resistances are adjusted by a flow resistance adjusting variable resistor having a specific structure for adjusting the flow resistance of the extruded resin supplied from the flow divider, the branch pipe, and the branch pipe side of the extruder. As a result, it is possible to cover a plurality of layers of the same striated body or cover a plurality of striated bodies with a minimum extruder. Therefore, the equipment cost can be significantly reduced.
そしてまた、流動抵抗調整用の可変抵抗器は、調整部
の調整によって、流量比を変える圧力調整ロッドを容易
に進退させることができるため、流動抵抗の調整が簡単
に行える利点がある。しかも、この可変抵抗器は、分岐
管の一方側のみに設けるのみでよく、大きなコスト上昇
を招くこともない。Further, the variable resistor for adjusting the flow resistance has an advantage that the adjustment of the flow resistance can be easily performed because the pressure adjusting rod for changing the flow rate ratio can be easily advanced and retracted by adjusting the adjusting section. In addition, the variable resistor need only be provided on one side of the branch pipe, and does not cause a significant increase in cost.
（２）また、押出機の設置台数の低減により、大幅な省
スペース化を図ることができる。勿論、保守、点検等の
手間の削減にもなる。(2) Further, by reducing the number of extruders installed, a large space saving can be achieved. Needless to say, maintenance and inspections can be reduced.
第１図は本発明に係る樹脂の押出被覆方法を実施するた
めの装置系の一例を示した概略説明図、第２図は分流器
と可変抵抗器の内部構造を示した縦断面図、第３図はケ
ーブルの一例を示した断面図である。 図中、 １〜３……押出機、 ４……クロスヘッド、 ５……分流器、 ６……可変抵抗器、 ７……分岐管、 10……外筒 11……マスターコア 12……圧力調整ロッド 13……樹脂供給口 14……調整部 21……線条体、 22〜26……被覆層、FIG. 1 is a schematic explanatory view showing an example of an apparatus system for carrying out a resin extrusion coating method according to the present invention, FIG. 2 is a longitudinal sectional view showing the internal structure of a shunt and a variable resistor, and FIG. FIG. 3 is a sectional view showing an example of the cable. In the figure, 1-3 ... extruder, 4 ... crosshead, 5 ... current divider, 6 ... variable resistor, 7 ... branch pipe, 10 ... outer cylinder 11 ... master core 12 ... pressure Adjusting rod 13 ... Resin supply port 14 ... Adjusting part 21 ... Striated body, 22-26 ... Coating layer,
───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉田 昭太郎 東京都江東区木場１丁目５番１号 藤倉 電線株式会社内 (72)発明者 山之内 宏 東京都江東区木場１丁目５番１号 藤倉 電線株式会社内 (72)発明者 横山 繁嘉寿 東京都江東区木場１丁目５番１号 藤倉 電線株式会社内 (56)参考文献 特開 昭60−172110（ＪＰ，Ａ) 実開 昭62−35814（ＪＰ，Ｕ) 実開 昭58−45029（ＪＰ，Ｕ) 実開 昭60−191420（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shotaro Yoshida 1-5-1 Kiba, Koto-ku, Tokyo Inside Fujikura Electric Wire Co., Ltd. (72) Inventor Hiroshi Yamanouchi 1-1-5-1 Kiba, Koto-ku, Tokyo Fujikura Electric Wire Inside (72) Inventor Shigeyoshi Yokoyama 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Electric Wire Co., Ltd. (56) References JP-A-60-172110 (JP, A) Jpn. JP, U) Japanese Utility Model Showa 58-45029 (JP, U) Japanese Utility Model Showa 60-191420 (JP, U)
Claims (2)
せる樹脂の押出被覆方法において、１台の押出機の複数
層に押出可能とするクロスヘッドに、１又は２台以上の
押出機の樹脂供給管を分流器及び分岐管を通じて連通さ
せると共に、当該分岐管の一方の途中に、外筒中に樹脂
供給用の隙間を持って挿入されたマスターコアとこのマ
スターコアのセンターの貫通穴に摺動自在に挿入されて
その先端と外筒の樹脂供給口との離間間隔により流量比
を変える圧力調整ロッドとからなり、この圧力調整ロッ
ドの進退が調整部によって行われる流動抵抗調整用の可
変抵抗器を設け、前記１又は２台以上の押出機からの押
出樹脂を前記分流器により複数の方向に分流させ、この
各分流樹脂を、前記可変抵抗器により流動抵抗を調整し
て、１本の線条体に複数層として被覆させることを特徴
とする樹脂の押出被覆方法。1. A resin extrusion coating method for coating a single striated body with a plurality of layers of extruded resin, wherein one or two or more crossheads capable of being extruded into a plurality of layers of one extruder are provided. The resin supply pipe of the extruder is communicated through the flow divider and the branch pipe, and a master core inserted into the outer cylinder with a gap for resin supply in one half of the branch pipe and a center of the master core penetrated. A pressure adjusting rod which is slidably inserted into the hole and changes the flow ratio depending on the distance between the tip of the hole and the resin supply port of the outer cylinder. The variable resistor is provided, and the extruded resin from the one or more extruders is divided in a plurality of directions by the flow divider, and the flow resistance of each of the divided resins is adjusted by the variable resistor, One striatum Extrusion coating method of a resin, characterized in that to the coating as multiple layers.
せる樹脂の押出被覆方法において、１台の押出機の複数
層に押出可能とするクロスヘッドに、１又は２台以上の
押出機の樹脂供給管を分流器及び分岐管を通じて連通さ
せると共に、当該分岐管の一方の途中に、外筒中に樹脂
供給用の隙間を持って挿入されたマスターコアとこのマ
スターコアのセンターの貫通穴に摺動自在に挿入されて
その先端と外筒の樹脂供給口との離間間隔により流量比
を変える圧力調整ロッドとからなり、この圧力調整ロッ
ドの進退が調整部によって行われる流動抵抗調整用の可
変抵抗器を設け、前記１又は２台以上の押出機からの押
出樹脂を前記分流器により複数の方向に分流させ、この
各分流樹脂を、前記可変抵抗器により流動抵抗を調整し
て、複数の線条体に複数層として被覆させることを特徴
とする樹脂の押出被覆方法。2. A resin extrusion coating method for coating a plurality of striated bodies with a plurality of layers of extruded resin. The resin supply pipe of the machine is communicated through the flow divider and the branch pipe, and at one half of the branch pipe, a master core inserted into the outer cylinder with a gap for resin supply and a through hole at the center of the master core A pressure adjusting rod which is slidably inserted into the end and changes the flow ratio depending on the distance between the tip and the resin supply port of the outer cylinder. A variable resistor is provided, and the extruded resin from the one or more extruders is diverted in a plurality of directions by the flow divider, and the flow resistance of each of the divided resins is adjusted by the variable resistor. Striatum of Extrusion coating method of a resin, characterized in that to the coating as multiple layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1143917A JP2731799B2 (en) | 1989-06-06 | 1989-06-06 | Extrusion coating method of resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1143917A JP2731799B2 (en) | 1989-06-06 | 1989-06-06 | Extrusion coating method of resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH039827A JPH039827A (en) | 1991-01-17 |
| JP2731799B2 true JP2731799B2 (en) | 1998-03-25 |
Family
ID=15350104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1143917A Expired - Fee Related JP2731799B2 (en) | 1989-06-06 | 1989-06-06 | Extrusion coating method of resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2731799B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05181532A (en) * | 1992-01-07 | 1993-07-23 | Sumitomo Metal Ind Ltd | Device and method for controlling cutoff of plate-shaped body |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1601698A (en) * | 1977-08-20 | 1981-11-04 | Gen Eng Radcliffe | Extrusion method and apparatus therefor |
| JPS5940200Y2 (en) * | 1981-08-31 | 1984-11-13 | 古河電気工業株式会社 | Crosshead for simultaneous extrusion of multiple strips |
| JPS60172110A (en) * | 1984-02-16 | 1985-09-05 | 株式会社フジクラ | Method of extruding multilayer of wire and cable coating |
| JPH0244985Y2 (en) * | 1985-08-22 | 1990-11-29 |
-
1989
- 1989-06-06 JP JP1143917A patent/JP2731799B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH039827A (en) | 1991-01-17 |
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