JPS62138230A - Preparation of coated pipe - Google Patents
Preparation of coated pipeInfo
- Publication number
- JPS62138230A JPS62138230A JP27794785A JP27794785A JPS62138230A JP S62138230 A JPS62138230 A JP S62138230A JP 27794785 A JP27794785 A JP 27794785A JP 27794785 A JP27794785 A JP 27794785A JP S62138230 A JPS62138230 A JP S62138230A
- Authority
- JP
- Japan
- Prior art keywords
- metal tube
- outer covering
- tube
- flexible metal
- metal pipe
- 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
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
(産業上の利用分野]
本発明は銅管等の可撓性金属管に熱可塑性合成樹脂製の
断熱材が被覆されている被覆管の製造方法に関する。(Industrial Application Field) The present invention relates to a method for manufacturing a cladding tube in which a flexible metal tube such as a copper tube is coated with a heat insulating material made of a thermoplastic synthetic resin.
【従来の技術1
熱可塑性合成樹脂製の断熱材により被覆された冷媒用銅
管等の可撓性被覆管を製造するには、断熱材によって管
状に成形した外被管を用い、この外被管に該外被管の長
さとほぼ同一長さにカットした可撓性金属管を差し込む
方法が採用されている。 しか鴫て、可撓性金属管の差
し込み作業時に生じ勝ちな抵抗を緩和し、差し込みを容
易にするためには、外被管と可撓性金属管との間に形成
される間隙をかなり大きくする必要があった。
【発明が解決しようとする問題点】
予め成形されている外被管に可撓性金属管を差し込む従
来方法では、可撓性金属管の先端で外被管の内壁を傷つ
けるとか、外被管を破ったりして被覆管の断熱性を著し
く損なうことになるし、また、生産性が悪いことは勿論
のこと、商品価値を著しく低下させるという問題があっ
た。
[問題点を解決するための手段]
本発明は上記の問題を解決したものであって。
その目的はシート状の外被材を管状に成形しなから可撓
性金属管に被覆することができる被覆管の製造方法を提
供することにあり、本発明によれば外被材を可撓性金属
管に密接させて被覆でき、外被材が傷ついたり破れたり
する不具合を全面的に解消できることは勿論のこと、生
産性を高め得ると同時に、断熱性能が良好であって商品
価値の優れた被覆管を製造できる。
しかして、本発明の上記目的は銅管等の可撓性金属管と
熱可塑性合成樹脂製のシート状外被材を個別に送り出し
、走行する可撓性金属管の表面にスリップ剤を塗布する
一方、上記外被材を断面形状が円弧状になるように賦形
した後、外被材を可撓性金属管に縦添えして該可撓性金
属管とともに成形案内部に送り、この成形案内部によっ
て外被材を可撓性金属管に被包した後に該外被材の相対
向した両端面部を加熱溶融し、次いで、外被材を走行す
る可撓性金属管とともに該外被材を管状に賦形する成形
ダイに送り、この成形ダイによって両端面部を溶着させ
た外被材を冷却しながら引き取るようにした被覆管の製
造方法により達成される。[Prior art 1] In order to manufacture flexible cladding tubes such as refrigerant copper tubes coated with a heat insulating material made of thermoplastic synthetic resin, a jacketed tube formed into a tubular shape with a heat insulating material is used. A method is adopted in which a flexible metal tube cut to approximately the same length as the jacket tube is inserted into the tube. However, in order to ease the resistance that may occur when inserting a flexible metal tube and to facilitate insertion, the gap formed between the jacket tube and the flexible metal tube must be made considerably larger. I needed to. [Problems to be Solved by the Invention] In the conventional method of inserting a flexible metal tube into a pre-formed jacket tube, the tip of the flexible metal tube may damage the inner wall of the jacket tube. This causes problems such as damage to the heat insulation properties of the cladding, and not only poor productivity but also a significant reduction in commercial value. [Means for Solving the Problems] The present invention solves the above problems. The object of the present invention is to provide a method for manufacturing a cladding tube that can coat a flexible metal tube after forming a sheet-like jacket material into a tube shape. It not only completely eliminates problems such as damage or tearing of the outer covering material, but also improves productivity, has good insulation performance, and has excellent commercial value. cladding tubes can be manufactured. Therefore, the above object of the present invention is to separately feed a flexible metal tube such as a copper tube and a sheet-like jacket material made of thermoplastic synthetic resin, and apply a slip agent to the surface of the traveling flexible metal tube. On the other hand, after shaping the above-mentioned jacket material so that its cross-sectional shape is arc-shaped, the jacket material is attached vertically to the flexible metal tube and sent to the forming guide section together with the flexible metal tube, and the After the outer covering material is wrapped in a flexible metal tube by the guide section, both opposing end surfaces of the outer covering material are heated and melted, and then the outer covering material is wrapped together with the flexible metal tube running through the outer covering material. This is accomplished by a method for producing a cladding tube in which the cladding material is sent to a forming die that shapes it into a tubular shape, and the outer covering material with both end faces welded to the forming die is taken off while being cooled.
以下に、添付図面を参照しながら本発明製造方法を説明
する。
1は銅管等の可撓性金属管(以下、単に金属管という)
、2は熱可塑性合成樹脂製のシート状外被材(以下、単
に外被材という)であって、金属管1は該金属管1を真
直ぐに矯正する矯正機能を有する公知の送り装置3によ
って繰出され、その走行通路上に設置されているシリコ
ン等のスリップ剤塗布部4によってスリップ剤の塗布を
受けて進行し、一方、外被材2はその走行通路上にM9
Iした鼓状の曲げローラ装置部5によって円弧状に曲げ
られ、上記スリップ剤塗布部4を通過した金属管1に向
かって進行する。
この外被材2を繰出して走行させる駆動装置については
後述する。
次に、走行する金属管1に外被材2を縦添えして成形案
内部6に送り、この成形案内部6によって外被材2を見
掛は上は管状に賦形しながら金属管1上に被包し、成形
案内部6を通過した外被材2の相対向した両端面部2a
を加熱器7によって加熱溶融させる。 次いで、外被材
2を走行する金属管1とともに成形ダイ8に送り、この
成形ダイ8の入口部である絞り成形部8aによって外被
材2の両端面部2aを突き合わせて溶着し、外被材2を
管状に賦形する一方、絞り成形部8aから送り出される
外被材2を冷却管部8b、8cによって冷却し、被覆管
9を連続的に製造する。
しかして、外被材2を走行させる駆動装置は無端状−の
駆動ベルト11.12から成り、この面駆動ベルト11
.12は成形ダイ8の一部である冷却管部8b、8cの
上下に配置され、絞り成形部8aから送り出された被覆
管9の外被材2を挾着し、外被材2を金属管1とは個別
に走行させる仕組になっている。 冷却管部8b、8c
は絞り成形部8aから二股状に分岐して構成され、この
冷却管部8b、8c内に公知の手段によって冷却空気を
導入し、絞り成形部8aから送り出された外被材2を冷
却する。 スリップ剤塗布部4は、金属管1の走行通路
と直交させてケース4aを設け、ケース4a内にスリッ
プ剤を混入したフェルト4bを充填して構成され、ケー
ス4aに金属管1が通過する窓穴4cを設けて、金属管
1がフェルト4bに接して走行するときにスリップ剤が
金属管1上に塗布される。 また、成形案内部6は手前
部分が大きく開口したテーパー管部6aと、このテーパ
ー管部6aに連なる円筒管部6bを備え、テーパー管部
6aは金属管1に縦添えしだ外被材2の導入を円滑に行
なわせるための案内部として、また円筒管部6bは外被
材2を予め管状に賦形する賦形部としてそれぞれ機能し
ている。 成形器7は熱線を内蔵した鐘状のものが用い
られ、テーパー状の先端部7dを外被材2の相対向した
両端面部28間に挿入し1両端面部2aを加熱して溶融
する。
以上説明した被覆管の製造において、駆動装置10の駆
動ベルト11.12により挾着されて走行する外被材2
は、成形ダイ8の絞り成形部8aを通過するときに強い
抵抗を受けて延び、この延びは外被材2が駆動ベルト1
1.12から開放された時点で収縮することになる。
したがって。
金属管1と外被材2が同速度で成形ダイ8を走行すると
、最終的には金属管1が外被材2より突出した状態で被
覆管が製造されるといった不具合が生ずる。 この不具
合の発生を防止する方法として、本発明では駆動袋ff
1loによる外被材2の引取速度を金属管1の送り速度
より10〜20%程度速くするもので、この速度差を許
容するためにスリップ剤を金属管1上に塗布し、金属管
1と外被材2が互いに影響されないで各々の設定速度で
走行できるようにした。The manufacturing method of the present invention will be explained below with reference to the accompanying drawings. 1 is a flexible metal tube such as a copper tube (hereinafter simply referred to as a metal tube)
, 2 is a sheet-like outer covering material (hereinafter simply referred to as outer covering material) made of thermoplastic synthetic resin, and the metal tube 1 is fed by a known feeding device 3 having a straightening function to straighten the metal tube 1. The jacket material 2 is fed out and progresses after being coated with a slip agent such as silicone by a slip agent coating section 4 such as silicone installed on the traveling path.
It is bent into an arc shape by the drum-shaped bending roller unit 5, and advances toward the metal tube 1 which has passed through the slip agent application section 4. A drive device for feeding and traveling this outer cover material 2 will be described later. Next, the outer covering material 2 is attached vertically to the running metal tube 1 and sent to the forming guide section 6, and the outer covering material 2 is shaped into a tubular shape at the top by the forming guide section 6 while the metal tube 1 is being shaped. Opposite end surfaces 2a of the outer cover material 2 that has been encapsulated above and passed through the forming guide section 6
is heated and melted by a heater 7. Next, the outer cover material 2 is sent to a forming die 8 together with the running metal tube 1, and the both end surfaces 2a of the outer cover material 2 are butted and welded by the drawing part 8a which is the inlet of the forming die 8, and the outer cover material While forming the cladding material 2 into a tubular shape, the cladding material 2 sent out from the drawing section 8a is cooled by the cooling tube sections 8b and 8c, and the cladding tube 9 is continuously manufactured. The drive device for running the sheathing material 2 thus consists of an endless drive belt 11, 12, and this planar drive belt 11.
.. Reference numerals 12 are arranged above and below the cooling pipe parts 8b and 8c, which are a part of the forming die 8, and clamp the jacket material 2 of the cladding tube 9 sent out from the drawing part 8a, and convert the jacket material 2 into a metal tube. 1 and is designed to run independently. Cooling pipe parts 8b, 8c
The cooling pipes are bifurcated from the drawing section 8a, and cooling air is introduced into these cooling pipe sections 8b and 8c by known means to cool the jacket material 2 sent out from the drawing section 8a. The slip agent application section 4 is configured by providing a case 4a perpendicular to the running path of the metal tube 1, filling the case 4a with felt 4b mixed with a slip agent, and providing a window in the case 4a through which the metal tube 1 passes. A hole 4c is provided so that a slip agent is applied onto the metal tube 1 when the metal tube 1 runs in contact with the felt 4b. Further, the forming guide section 6 includes a tapered tube section 6a having a large opening at the front side, and a cylindrical tube section 6b connected to the tapered tube section 6a. The cylindrical tube section 6b functions as a guide section for smooth introduction of the material, and as a shaping section that shapes the jacket material 2 into a tubular shape in advance. The molding device 7 is bell-shaped and has a built-in heating wire, and its tapered tip 7d is inserted between the opposing end surfaces 28 of the sheathing material 2 to heat and melt both end surfaces 2a. In the production of the cladding tube described above, the outer cladding material 2 is held and travels by the drive belts 11 and 12 of the drive device 10.
is extended while receiving strong resistance when passing through the drawing part 8a of the forming die 8, and this extension is such that the jacket material 2
It will contract when it is released from 1.12.
therefore. If the metal tube 1 and the sheathing material 2 run through the forming die 8 at the same speed, a problem arises in that the cladding tube is ultimately manufactured with the metal tube 1 protruding from the sheathing material 2. As a method for preventing the occurrence of this problem, in the present invention, the drive bag ff
The take-up speed of the jacket material 2 by 1lo is about 10 to 20% faster than the feeding speed of the metal tube 1. In order to allow this speed difference, a slip agent is applied on the metal tube 1, and the The outer covering materials 2 are made to be able to travel at their respective set speeds without being influenced by each other.
本発明は上記の如くであって、被覆管を連続的に製造で
きることは勿論のこと、その製造時に同調させて被覆管
を順次定尺カットした場合でも、金属管が外被材より突
出する不具合の生ずることが全面的に防止され、商品価
値の優れた被覆管を能率よく製造できる利点がある。
また、本発明製造方法によれば、シート状の外被材を管
状に賦形する作業と該外被材を金属管に被覆する作業が
同時にできるため、外被材と金属管との間の間隙を少な
くすることができ、断熱性能の面で優れた被覆管を製造
することが可能であり、素材の供給から製造された被覆
管を定尺カットし、所定長さの被覆管を個々に巻取る作
業を一貫して行なうための自動化も容易に実現できるも
のであって、省力化して生産性を高める上に極めて有効
である。The present invention, as described above, not only allows the cladding tube to be manufactured continuously, but also has the problem that the metal tube protrudes from the outer jacket material even when the cladding tube is sequentially cut to a fixed length in synchronization with the manufacturing process. This method has the advantage of completely preventing the occurrence of defects, and making it possible to efficiently manufacture cladding tubes with excellent commercial value.
Furthermore, according to the manufacturing method of the present invention, the work of shaping a sheet-like jacket material into a tube shape and the work of covering the metal tube with the jacket material can be performed simultaneously, so that It is possible to manufacture cladding tubes with reduced gaps and excellent thermal insulation performance, and by cutting the cladding tubes manufactured from the raw material supply to a specified length and individually cutting the cladding tubes of a predetermined length. Automation for consistently performing the winding operation can be easily realized, and is extremely effective in saving labor and increasing productivity.
図面は本発明製造方法を実施するための装置を示すもの
で、第1図は側面図、第2図は要部斜視図、第3図はス
リップ剤塗布部の断面図、第4図は成形案内部の断面図
である。
図中、1は可撓性金属管、2は外被材、2aは端面部、
3は送り装置、4はスリップ剤塗布部、4aはケース、
4bはフェルト、4cは窓穴、5は曲げローラ装置部、
6は成形案内部、6aはテーパー管部、6bは円筒管部
、7は加熱器、8は成形ダイ、8aは絞り成形部、8b
、8cは冷却管部、9は被覆管、10は駆動装置、11
.12は駆動ベルトである。The drawings show an apparatus for carrying out the manufacturing method of the present invention, in which Fig. 1 is a side view, Fig. 2 is a perspective view of the main part, Fig. 3 is a cross-sectional view of the slip agent application part, and Fig. 4 is a molding It is a sectional view of a guide part. In the figure, 1 is a flexible metal tube, 2 is an outer cover material, 2a is an end surface part,
3 is a feeding device, 4 is a slip agent application section, 4a is a case,
4b is felt, 4c is a window hole, 5 is a bending roller device part,
6 is a forming guide part, 6a is a tapered pipe part, 6b is a cylindrical pipe part, 7 is a heater, 8 is a forming die, 8a is a drawing part, 8b
, 8c is a cooling pipe section, 9 is a cladding tube, 10 is a drive device, 11
.. 12 is a drive belt.
Claims (1)
外被材を個別に送り出し、走行する可撓性金属管の表面
にスリップ剤を塗布する一方、上記外被材を断面形状が
円弧状になるように賦形した後、外被材を可撓性金属管
に縦添えして該可撓性金属管とともに成形案内部に送り
、この成形案内部によって外被材を可撓性金属管に被包
した後に該外被材の相対向した両端面部を加熱溶融し、
次いで、外被材を走行する可撓性金属管とともに該外被
材を管状に賦形する成形ダイに送り、この成形ダイによ
って両端面部を溶着させた外被材を冷却しながら引き取
ることを特徴とする被覆管の製造方法。A flexible metal pipe such as a copper pipe and a sheet-like jacket material made of thermoplastic synthetic resin are sent out separately, and a slip agent is applied to the surface of the running flexible metal pipe, while the cross-sectional shape of the jacket material is After shaping the material into an arc shape, the outer covering material is placed vertically on a flexible metal tube and sent together with the flexible metal tube to a forming guide section, where the outer covering material is made flexible by the forming guide section. After encapsulating the outer covering material in a flexible metal tube, heating and melting the opposing end surfaces of the outer covering material,
Next, the outer covering material is sent together with the running flexible metal tube to a forming die that shapes the outer covering material into a tubular shape, and the outer covering material with both end surfaces welded is taken out while being cooled by the forming die. A method for manufacturing a cladding tube.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27794785A JPS62138230A (en) | 1985-12-12 | 1985-12-12 | Preparation of coated pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27794785A JPS62138230A (en) | 1985-12-12 | 1985-12-12 | Preparation of coated pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62138230A true JPS62138230A (en) | 1987-06-22 |
Family
ID=17590489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27794785A Pending JPS62138230A (en) | 1985-12-12 | 1985-12-12 | Preparation of coated pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62138230A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5145628A (en) * | 1989-12-29 | 1992-09-08 | Rudolph Karg | Process for manufacturing a hose clad with ultra-high molecular weight polyethylene |
-
1985
- 1985-12-12 JP JP27794785A patent/JPS62138230A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5145628A (en) * | 1989-12-29 | 1992-09-08 | Rudolph Karg | Process for manufacturing a hose clad with ultra-high molecular weight polyethylene |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4381208A (en) | Method of making a ribbon cable | |
US4634844A (en) | Electroweldable socket and a device of manufacturing such a socket | |
US4929408A (en) | Method of locating an electrical conductor between a first extruded tube and an extruded lining | |
US2803730A (en) | Method of forming lined tubing | |
JPS62138230A (en) | Preparation of coated pipe | |
US2754784A (en) | Manufacture of a metal tube which may form part of an electric cable | |
US4134958A (en) | Method of manufacturing corrugated tubing of polytetrafluorethylene | |
JP3709920B2 (en) | Manufacturing method of flat cable | |
WO2000031755A1 (en) | Method and apparatus for forming a shielded electric cable | |
US2127943A (en) | Method of making corrugated flexible tubes | |
JP2001351449A (en) | Manufacturing method of coated wire | |
JP2000215741A (en) | Water tight strand electric wire and its manufacture | |
JPH04179007A (en) | Manufacture of shielded cable | |
JP2801345B2 (en) | Method of manufacturing flat cable | |
JPH01241323A (en) | Continuous extruding equipment for composite wire and pipe | |
JPH0996397A (en) | Method for covering metal pipe with heat insulating material, and its device | |
JP2687389B2 (en) | Manufacturing method of flat type multi-core electric wire | |
JPH01197919A (en) | Manufacture of lap sheath cable | |
JPH01197916A (en) | Manufacture of flat type multi-core electric wire | |
JPH0359525B2 (en) | ||
JP2022152748A (en) | Manufacturing method for coated pipe | |
KR20050083113A (en) | Pipe and electric wire inserting apparatus of a pipe using air conditioning system | |
KR910002369B1 (en) | Method and apparatus for the production for synthetic spiral pipe | |
JPH0620539A (en) | Manufacture of flat cable | |
JP3438373B2 (en) | Fusion ribbon wire manufacturing apparatus and fusion ribbon wire manufacturing method |