JPH0355720A - Coating method of wire rod - Google Patents
Coating method of wire rodInfo
- Publication number
- JPH0355720A JPH0355720A JP15064389A JP15064389A JPH0355720A JP H0355720 A JPH0355720 A JP H0355720A JP 15064389 A JP15064389 A JP 15064389A JP 15064389 A JP15064389 A JP 15064389A JP H0355720 A JPH0355720 A JP H0355720A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- wire rod
- coating
- coating layer
- shape memory
- 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
- 238000000576 coating method Methods 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 68
- 239000011248 coating agent Substances 0.000 claims abstract description 30
- 238000001125 extrusion Methods 0.000 claims abstract description 28
- 239000011247 coating layer Substances 0.000 claims description 31
- 239000000057 synthetic resin Substances 0.000 claims description 29
- 229920003002 synthetic resin Polymers 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 21
- 229910010293 ceramic material Inorganic materials 0.000 claims description 20
- 239000011796 hollow space material Substances 0.000 claims description 5
- 238000005524 ceramic coating Methods 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 3
- 229910001120 nichrome Inorganic materials 0.000 abstract description 13
- 239000000919 ceramic Substances 0.000 abstract description 10
- 239000004927 clay Substances 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 44
- 238000010586 diagram Methods 0.000 description 12
- 239000002131 composite material Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000011324 bead Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052580 B4C Inorganic materials 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052575 non-oxide ceramic Inorganic materials 0.000 description 1
- 239000011225 non-oxide ceramic Substances 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は形状記憶合金や発熱体等の線材にセラミックス
材料又は合成樹脂材料によるビーズ状の絶縁被覆を施す
ための線材の被覆方法に関するものである．
〈従来の技術〉
従来より、ｔ線等の導電性線材には通電の際の漏電を防
止するために、ゴム等のプラスチックや布によって絶縁
被覆が施されている．前記の如き絶縁被覆を有する電線
等は、可撓性を有し自由に屈曲し得るものである．また
導電性線材と被覆材との間は密着しており、通電によっ
て発生するジュール熱は被覆材を介して空中に放散され
る．最近になって、目的の形状を記憶させた後所定の形
状に変形させ、形状回復温度以上に加熱すると記憶した
形状を回復し、この形状回復過程に於いて目的の仕事を
なし得る形状記憶合金が開発されている。通常前記形状
記憶合金に対する加熱は、雰囲気温度により或いは通電
により行っている。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for coating wire rods, such as shape memory alloys, heating elements, etc., for applying bead-shaped insulation coatings of ceramic materials or synthetic resin materials to wire rods such as shape memory alloys and heating elements. be. <Prior art> Conventionally, conductive wires such as T-wires have been covered with an insulating coating of plastic such as rubber or cloth to prevent leakage when energized. Electric wires and the like having an insulating coating as described above are flexible and can be bent freely. Furthermore, the conductive wire and the sheathing material are in close contact, and the Joule heat generated by energization is dissipated into the air through the sheathing material. Recently, shape memory alloys have been developed that can memorize a desired shape, then deform into a predetermined shape, recover the memorized shape when heated above the shape recovery temperature, and perform the desired work in this shape recovery process. is being developed. Usually, the shape memory alloy is heated at ambient temperature or by electricity.
前記形状記憶合金に於ける形状変化は非可逆的である。The shape change in the shape memory alloy is irreversible.
このため本件出願人は、異なる形状を記憶させた復敗の
形状記憶合金線材を並列して一体化することによって形
状記憶合金の複合体をＩ＃Ｉ威し、形状記憧合金線材に
対し選択的に通電することで複合体を可逆的に形状変化
させたり、或いは異なる形状に変化させる技術を開発し
ている．前記技術にあっては、形状記憶合金の複合体を
構成する複数の形状記憶合金線材を選択的に通電するに
際し以下の各条件が必要となる．即ち、特定の形状記憶
合金線材に対する通電が他の形状記憶合金線材に漏電し
てはならない。また通電された形状記憶合金線材の発熱
が他の形状記憶合金線材に対し影響を与えてはならない
．また通電を遮断された形状記憶合金線材の有する熱は
速やかに放散されなければならない．更に、形状記憶合
金線材を個々に被覆した場合、該被覆が形状記憶合金線
材の形状回復動作を阻害するものであってはならない。For this reason, the applicant has developed a shape memory alloy composite by integrating shape memory alloy wire rods with different shapes memorized in parallel, and selected the shape memory alloy wire rods as a shape memory alloy wire rod. We are developing technology to reversibly change the shape of composites or change them into different shapes by energizing them. In the above technology, the following conditions are required when selectively energizing a plurality of shape memory alloy wires constituting a shape memory alloy composite. That is, the current applied to a specific shape memory alloy wire must not leak to other shape memory alloy wires. Furthermore, the heat generated by the energized shape memory alloy wire must not affect other shape memory alloy wires. In addition, the heat contained in the shape memory alloy wire must be dissipated quickly when the current is cut off. Furthermore, when the shape memory alloy wire is individually coated, the coating must not inhibit the shape recovery operation of the shape memory alloy wire.
またニクロム線ヒーターの如き発熱体にあっては、裸純
の状態で用いられているのが一般である。Furthermore, heating elements such as nichrome wire heaters are generally used in a bare pure state.
従って、例えばニクロム線を加熱炉に於ける熱源として
用いる場合には該線を直接炉壁に取り付けており、炉壁
に対する熱伝達が大きく、このため熱効率が悪い．また
シーズヒーターでは金属管の中にニクロム線を屈曲して
収納すると共に絶縁粉末を充填して構威しているため、
該ヒーターの熱が絶縁粉末の加熱に消費されることから
熱効率が悪い．
上記の如く、漏電の防止．熱伝達の防止．放熱性，可撓
性の保有等を解決するために、セラξソクス材料又は合
成樹脂材料によってビーズを形成し、該ビーズを個々の
形状記憶合金線材或いはニクロム線等に嵌装することに
よって、これ等の線材を被覆している．
〈発明が解決しようとする！Ｉｆｆ＞
上記技術に於いて、形状記憶合金線材やニクロム線等に
ビーズを嵌装する場合、作業に多くの人手が必要となり
能率が悪く、従って作業コストが高くなる。Therefore, for example, when a nichrome wire is used as a heat source in a heating furnace, the wire is attached directly to the furnace wall, and heat transfer to the furnace wall is large, resulting in poor thermal efficiency. In addition, in a sheathed heater, a nichrome wire is bent and stored inside a metal tube and is filled with insulating powder.
Thermal efficiency is poor because the heat of the heater is consumed in heating the insulating powder. As mentioned above, prevention of electrical leakage. Prevention of heat transfer. In order to solve problems such as heat dissipation and flexibility, beads are formed from Cerasox material or synthetic resin material, and the beads are inserted into individual shape memory alloy wires or nichrome wires. It coats wire rods such as <Invention tries to solve! If> In the above technique, when inserting beads into a shape memory alloy wire, a nichrome wire, etc., many hands are required for the work, resulting in poor efficiency and, therefore, high work costs.
本発明の目的は、形状記憶合金やニクロム線等の線材に
効率的にセラミックス又は合成樹脂からなるビーズ状の
被覆を施す方法を提供するものである。An object of the present invention is to provide a method for efficiently applying a bead-like coating made of ceramic or synthetic resin to a wire such as a shape memory alloy or a nichrome wire.
く課題を解決するための手段〉
上記課題を解決するための本発明に係る線材の被覆方法
は、セラもソクス材料の中空材の押出型の前端面に線材
の端部を当接させ、前記押出型からセラミノクス材料の
中空材を押出成形することによって前記線材の周囲にセ
ラξツクス材料による被覆層を形成し、次いで前記被覆
層の外周に所定の形状を持った溝を形成し、その後焼威
して線材の周囲にビーズ状のセラミックス被覆を形成す
ることを特徴とするものである．
また他の被覆方法は、合成樹脂材料の中空材の押出型の
前端面に線材の端部を当接させ、前記押出型から合成樹
脂材料の中空材を押出成形することによって前記線材の
周囲に合成樹脂材料による被覆層を形成し、前記被覆層
が可塑性を保持している間に該被覆層の外周に所定の形
状を持った溝を形成し、その後常温まで冷却して線材の
周囲にビーズ状の合成樹脂被覆を形成することを特徴と
するものである．
〈作用〉
上記第１の手段に於いて、先ずセラミックス被覆すべき
線材をセラξツクス材料の中空材の押出型の前端面に当
接させる．そして前記押出型から粘土状のセラごツクス
材料を押出成形することによって、線材の周囲にセラミ
ンクス材料による被覆層を形成する．このとき、前記中
空材の内径は線材の外径よりも大きい寸法を有すること
が好ましい．前記の如くして線材の周囲にセラξツクス
材料による被覆層を形成した後、該被覆層の外周に所定
の形状、即ち、球状或いは円筒状等の所望の形状を持っ
た溝を形或する．次に線材と該線材の周囲に形成した溝
を有する被覆層とを焼威することによって線材の周囲に
形成した被覆層を硬化させる。前記焼成過程に於いて、
被覆層を構成するセラξソクスは溶融した後固化する。Means for Solving the Problems> In order to solve the above problems, the method for coating a wire according to the present invention comprises bringing the end of the wire into contact with the front end surface of an extrusion mold for a hollow material made of Ceramosoku material, and A covering layer of ceramic material is formed around the wire by extruding a hollow member of ceramic material from an extrusion mold, and then a groove with a predetermined shape is formed on the outer periphery of the covering layer, and then baked. It is characterized by forming a bead-shaped ceramic coating around the wire. Another covering method is to bring the end of the wire into contact with the front end surface of an extrusion die for a hollow synthetic resin material, and to extrude the hollow synthetic resin material from the extrusion die to cover the periphery of the wire. A coating layer made of a synthetic resin material is formed, and while the coating layer retains its plasticity, a groove with a predetermined shape is formed on the outer periphery of the coating layer, and then it is cooled to room temperature and beads are formed around the wire. It is characterized by forming a synthetic resin coating. <Operation> In the first method described above, first, the wire to be coated with ceramics is brought into contact with the front end surface of the extrusion die of the hollow member of ceramic material. Then, by extruding a clay-like ceramic material from the extrusion die, a coating layer of the ceramic material is formed around the wire rod. At this time, it is preferable that the inner diameter of the hollow member is larger than the outer diameter of the wire. After forming a coating layer of ceramic material around the wire as described above, a groove having a predetermined shape, that is, a desired shape such as spherical or cylindrical, is formed on the outer periphery of the coating layer. ．． Next, the coating layer formed around the wire is hardened by burning the wire and the coating layer having grooves formed around the wire. In the firing process,
Cerasox, which constitutes the coating layer, is melted and then solidified.
この溶融−固化の際にセラ１ツクスが収縮することで、
被覆層の外周に形成した溝に集中応力が作用し、被覆層
には溝を基点とした亀裂が生じ、ビーズ状の被覆材とな
る。As the ceramic contracts during this melting and solidification,
Concentrated stress acts on the grooves formed on the outer periphery of the coating layer, causing cracks in the coating layer starting from the grooves, resulting in bead-shaped coating material.
また上記第２の手段に於いて、合成樹脂被覆すべき線材
を合成樹脂材料の中空材の押出型の前端面に当接させる
。そして前記押出型から溶融状態の合成樹脂材料を押出
成形することによって、線材の周囲に合成樹脂材料によ
る被覆層を形成する．前記の如くして線材の周囲に合成
樹脂材料による被覆層を形成した後、該被覆層が可塑性
を保持している間に被覆層の外周に所定の形状を持った
溝を形成する．次に線材と該線材の周囲に形戊した溝を
有する被覆層とを常温まで冷却することによって、線材
の周囲に形成した破屓層を硬化させると被覆層を構我す
る合成樹脂が収縮し、被覆層の外周に形成した溝に集中
応力が作用する．前記集中応力の作用によって被覆層に
は溝を基点とする亀裂が生じ、該被覆層が複数に分割し
てビーズ状の被覆材となる。Further, in the second method, the wire to be coated with synthetic resin is brought into contact with the front end surface of the extrusion mold for the hollow material made of synthetic resin. Then, by extruding the molten synthetic resin material from the extrusion mold, a covering layer of the synthetic resin material is formed around the wire. After forming a coating layer made of a synthetic resin material around the wire as described above, a groove having a predetermined shape is formed on the outer periphery of the coating layer while the coating layer retains its plasticity. Next, the wire and the coating layer having grooves formed around the wire are cooled to room temperature to harden the fracture layer formed around the wire, and the synthetic resin forming the coating layer shrinks. , concentrated stress acts on the grooves formed on the outer periphery of the coating layer. Due to the action of the concentrated stress, cracks are generated in the coating layer starting from the grooves, and the coating layer is divided into a plurality of pieces to form bead-shaped coating materials.
また線材の周囲に形成したセラミックス材料又は合成樹
脂材料による被覆層を切断した場合には、該被覆層を焼
或或いは単に冷却することで線材の周囲にビーズ状の被
覆材を形成することが出来る。Furthermore, when the coating layer made of ceramic material or synthetic resin material formed around the wire is cut, a bead-shaped coating material can be formed around the wire by baking or simply cooling the coating layer. .
以上の工程によって線材の周囲にビーズ状のセラ旦ツク
ス被覆または合成樹脂被覆を形成することが出来る。By the above steps, a bead-shaped ceramic coating or synthetic resin coating can be formed around the wire.
〈実施例〉
以下上記手段を用いた線材の被覆方法について図により
説明する．
第１図（Ａ）〜（Ｆ）は本発明に係る線材の被覆方法の
工程順説明図、第２図は異なる長さの形状記憶合金線材
を接合して横威した形状記憶合金の複合体の説明図、第
３図（Ａ）．（Ｂ）は押出型の説明図、第４図は戒形体
に形成する溝の説明図である。<Example> A method of coating wire rods using the above method will be explained below using figures. Figures 1 (A) to (F) are step-by-step explanatory diagrams of the wire coating method according to the present invention, and Figure 2 is a shape memory alloy composite obtained by joining shape memory alloy wires of different lengths. An explanatory diagram of FIG. 3 (A). (B) is an explanatory diagram of the extrusion die, and FIG. 4 is an explanatory diagram of the grooves formed in the precept-shaped body.
図に於いて、線材１は通電によって発熱するニクロム線
等の発熱体の線材、形状記憶合金の単一線材、或いは第
２図に示すような長さの異なる形状記憶合金線材を長手
方向に接合して構威した形状記憶合金の複合体としての
線材等の線材であって、隣接する周囲の物体に対し漏電
．熱影響の付与等を防止することが望ましい線材が用い
られる．押出型２は第３図に示すように、型２ａと中子
２ｂとによって構成されている。そして前記押出型２を
押出機３に装着すると共に、該押出機３によって粘土状
に錬成されたセラミンクス材料、又は溶融状態の合成樹
脂材料を押し出すと、セラミックス材料又は合成樹脂材
料は型２ａと中子２ｂとによってバイブ状に成形される
。このような押出成形法は公知である。In the figure, the wire 1 is a heating element wire such as a nichrome wire that generates heat when energized, a single wire of a shape memory alloy, or a shape memory alloy wire of different lengths joined in the longitudinal direction as shown in Figure 2. Wire rods, such as wire rods, as composites of shape memory alloys, which are designed to prevent electrical leakage to adjacent surrounding objects. Wire rods are used that are desirable to prevent thermal effects. As shown in FIG. 3, the extrusion mold 2 is composed of a mold 2a and a core 2b. Then, when the extrusion mold 2 is attached to the extruder 3 and the extruder 3 extrudes the ceramic material smelted into clay or the synthetic resin material in the molten state, the ceramic material or the synthetic resin material is inserted into the mold 2a. It is formed into a vibrator shape by the child 2b. Such extrusion molding methods are known.
線材ｌを被覆するためのセラミックス材料としては、ア
ル逅ナ，ジルコニア，シリカ．アルミナ・シリカ．酸化
セリウム．マグネシア．チタニアムライト．スピネル，
コージェライト等の酸化物系セラ旦ックス、或いは窒化
ケイ素．窒化アルも，窒化ホウ素，窒化チタン，炭化ケ
イ素．炭化ホウ素，ｐｔ化タングステン，サイアロン等
の非酸化物系セラミンクス等を用いることが可能である
．また線材１を被覆するための合成樹脂材料としては、
ボエアミド，ポリイミド５ボリア逅ドイミド，フン素樹
脂，ポリベンゾイごダゾール等を用いることが可能であ
る。Ceramic materials for coating the wire 1 include aluminum, zirconia, silica, etc. Alumina silica. Cerium oxide. Magnesia. Titanium light. spinel,
Oxide ceramics such as cordierite, or silicon nitride. Al nitride also includes boron nitride, titanium nitride, and silicon carbide. It is possible to use non-oxide ceramics such as boron carbide, tungsten oxide, and sialon. In addition, the synthetic resin material for covering the wire 1 is as follows:
It is possible to use boaamide, polyimide 5-boria-imide, fluorine resin, polybenzoigodazole, and the like.
前記線材１に被覆を施す方法について第ｌ図（Ａ）〜（
Ｆ）により工程順に説明する。尚、以下線材１をセラミ
ックスにより被覆する場合を主として説明し、必要に応
じて合成樹脂による場合の説明を付加する．
先ず、前記線材ｌを直線状に戊形すると共に、該綿材１
の一端をチャソク４によって把持し、他端を押出型２の
押出方向下流側の端面である中子２ｂの前端面に当接さ
せる｛同図（Ａ） ｌ ．次に線材ｌを中子２ｂの前端
面に当接した状態を維持し、押出機３から押出型２を介
して粘土状にｉ！！威されたセラ稟フクス材料、或いは
溶融状態にある合成樹脂材料を線材ｌの周囲に沿わせて
押出成形し、線材ｌの周囲に被覆層となるパイプ状の成
形体（以下単にｒ成形体ｊという）５を形成する｛同図
（Ｂ）｝。The method of coating the wire rod 1 is shown in FIGS.
F) will be explained step by step. In the following, the case where the wire rod 1 is covered with ceramics will be mainly explained, and the case where it is covered with synthetic resin will be explained as necessary. First, the wire material 1 is cut into a straight shape, and the cotton material 1 is
One end of the core 2b is held by the chuck 4, and the other end is brought into contact with the front end surface of the core 2b, which is the end surface of the extrusion die 2 on the downstream side in the extrusion direction {Figure (A) l. Next, the wire 1 is kept in contact with the front end surface of the core 2b, and is passed from the extruder 3 through the extrusion die 2 into clay-like i! ! A pipe-shaped molded body (hereinafter simply referred to as a molded body J) is formed by extrusion molding a hardened ceramic material or a synthetic resin material in a molten state along the periphery of the wire l to form a coating layer around the wire l. ) 5 {same figure (B)}.
戊形体５の内径は線材ｌの外径よりも大きい寸法を有す
ることが好ましく、特に線材ｌが形状記憶合金線材を長
手方向に接合した複合体である場合には、接合部材６の
外径よりも大きい寸法を有することが好ましい。このよ
うに線材ｌの外周と成形体５の内周とに異なる寸法を持
たせることによって、成形体５が線材ｌに干渉すること
無く、円滑な押出戒形を実施し得るものである。It is preferable that the inner diameter of the rod-shaped body 5 is larger than the outer diameter of the wire l, and especially when the wire l is a composite body in which shape memory alloy wires are joined in the longitudinal direction, the inner diameter of the rod l is larger than the outer diameter of the joining member 6. It is also preferred that the size is also large. By giving the outer periphery of the wire 1 and the inner periphery of the molded body 5 different dimensions in this manner, smooth extrusion can be carried out without the molded body 5 interfering with the wire 1.
押出型２からの押出成形が進行し、戒形体５の長さが線
材１の長さと略等しくなると、線材ｌの周囲は略全長に
わたって戒形体５によって被覆される｛同図（Ｃ） ｌ
．このようにして略全長にわたって戒形体５により被
覆された線材ｌはチャック４から取り外されると共に、
端部の中子２ｂの端面に対する当接を解除される．前記
状態に於ける成形体５は、セラミックス材料の場合には
粘土状であり、また合成樹脂材料の場合には可塑性を有
している．
次に同図（Ｄ）に示すように所定の形状を持った工具７
を、線材ｌの周囲に形成された粘土状、或いは可塑性を
有する成形体５の外周面に対し矢印ａ方向から押圧する
と共に、線材１及び成形体５を矢印ｂ方向に回転させる
ことによって、成形体５に同図ＣＢ＞に示すような溝８
を形成すると同時に成形体５の表面を工具７によって成
形する．本実施例に於いて、工具７は成形体５の表面を
球状に成形し得るよう構威されている．
前記溝８の深さは成形体５を切断し得る深さで形成して
も良く、また第４図に示すように戒形体５の連続性を維
持し得る深さを持って形成しても良い．
戒形体５を溝８によって切断した場合には、後述する工
程で該成形体５を焼威或いは直ちに冷却することによっ
て線材１の周囲にビーズ状の被覆材９を形成することが
可能であり、また溝８を成形体５の連続性を維持して形
成した場合には、線材ｌ及び戒形体５を次工程に移送す
る際に、該成形体５を一材として取り扱うことが可能で
ある．尚、本実施例では成形体５には連続性を維持しう
るような溝８が形成されている．
次に成形体５の材料がセラミソクスである場合には、線
材ｌ及び成形体５をセラξツクス材料の組威に応じた温
度で焼成する．この焼成により、粘土状のセラミソクス
材料によって成形された戒形体５を硬化させる．即ち、
戒形体５を構威するセラミックス材料は昇温に伴って溶
融し、体積が減少する。このとき、戒形体５の外周に形
成した溝８に集中応力が作用する．次いで冷却すると、
成形体５が連続性を維持して形成されている場合、溝８
に対する集中応力によって戒形体５にはｉｌ１８を基点
とした亀裂が生じ、戒形体５は複数のビーズ状の被覆材
９となる。As the extrusion molding from the extrusion die 2 progresses and the length of the wire rod 5 becomes approximately equal to the length of the wire rod 1, the wire l is covered with the wire rod 5 over almost its entire length {Figure (C) l
．． In this way, the wire l covered with the preform body 5 over almost its entire length is removed from the chuck 4, and
The contact of the end portion with the end surface of the core 2b is released. The molded body 5 in the above state is clay-like in the case of a ceramic material, and has plasticity in the case of a synthetic resin material. Next, as shown in the same figure (D), a tool 7 with a predetermined shape
is pressed against the outer peripheral surface of the clay-like or plastic molded body 5 formed around the wire l from the direction of arrow a, and at the same time, the wire rod 1 and the molded body 5 are rotated in the direction of arrow b. A groove 8 as shown in the figure CB> is formed in the body 5.
At the same time as forming the molded body 5, the surface of the molded body 5 is molded by the tool 7. In this embodiment, the tool 7 is configured to form the surface of the compact 5 into a spherical shape. The groove 8 may be formed to a depth that allows the molded body 5 to be cut, or may be formed to a depth that maintains the continuity of the molded body 5 as shown in FIG. good. When the shaped body 5 is cut by the groove 8, it is possible to form a bead-shaped coating material 9 around the wire rod 1 by burning or immediately cooling the shaped body 5 in the process described later. Furthermore, when the grooves 8 are formed while maintaining the continuity of the molded body 5, the molded body 5 can be handled as one material when the wire l and the shaped body 5 are transferred to the next process. In this embodiment, grooves 8 are formed in the molded body 5 to maintain continuity. Next, when the material of the molded body 5 is ceramics, the wire l and the molded body 5 are fired at a temperature depending on the strength of the ceramic material. By this firing, the precept form 5 formed from the clay-like ceramic material is hardened. That is,
The ceramic material that makes up the shaped body 5 melts as the temperature rises, and its volume decreases. At this time, concentrated stress acts on the groove 8 formed on the outer periphery of the precept 5. Then, upon cooling,
When the molded body 5 is formed while maintaining continuity, the groove 8
Due to the concentrated stress, cracks are generated in the guard-shaped body 5 starting from il18, and the guard-shaped body 5 becomes a plurality of bead-shaped covering materials 9.
また戒形体５の材料が合成樹脂である場合には、成形体
５の外周に溝８を形成した後、直ちに腺材ｌ及び戒形体
５を常温まで冷却して硬化させる．前記硬化過程に於い
て戒形体５は収縮し、該収縮によって発生する応力が溝
８に対する集中応力として作用し、成形体５には溝８を
基点とした亀裂が生じて成形体５は複数のビーズ状の被
覆材９となる．
上記の如くして線材ｌの周囲に形成したビーズ状の被覆
材９は線材ｌの略全長にわたって整列しているため、線
材ｌを発熱させた場合に熱が被覆材９の内部に籠もる虞
があり、また線材ｌを変形させた場合に被覆材９が互い
に干渉して該変形を阻害する虞がある．このため、必要
に応じて線材ｌに被覆した被覆材９を数個だけ取り外し
、被覆材９相互の間に適当な間隙を形成することが好ま
しい（同図（Ｆ） ｌ ．
前述の実施例に於いて、戒形体５の表面を球状に成形す
ることによって球状の被覆材９を形成したが、この形状
に限定されるものでは無く、被覆材９を細長比（外径と
長さの比）の小さい円筒状に形成しても良い．
次に上記方法により周囲にビーズ状の被覆を施した形状
記憶合金線材、或いはニクロム線ヒーターの使用状態に
ついて説明する．
第５図（Ａ） ． （Ｂ）は夫々異なる形状を記憶させ
た３本の形状記憶合金線材１１−１３を並列させると共
に可撓性を有するケーシングｌ４内に収納し、該ケーシ
ング１４によって一体化したアクチュエー夕に関する模
式説明図である。Further, when the material of the molded body 5 is a synthetic resin, after forming the groove 8 on the outer periphery of the molded body 5, the gland material l and the molded body 5 are immediately cooled to room temperature and hardened. During the hardening process, the molded body 5 contracts, and the stress generated by the contraction acts as concentrated stress on the grooves 8, causing cracks in the molded body 5 starting from the grooves 8, causing the molded body 5 to have a plurality of cracks. A bead-shaped covering material 9 is formed. The bead-shaped sheathing material 9 formed around the wire l as described above is aligned over almost the entire length of the wire l, so that when the wire l generates heat, the heat is trapped inside the sheathing material 9. Furthermore, when the wire l is deformed, the covering materials 9 may interfere with each other and inhibit the deformation. For this reason, it is preferable to remove only a few of the sheathing materials 9 from the wire l as necessary to form an appropriate gap between the sheathing materials 9 (as shown in FIG. 1F). In the above, the spherical covering material 9 was formed by shaping the surface of the precept 5 into a spherical shape, but the shape is not limited to this, and the covering material 9 has a slenderness ratio (ratio of outer diameter to length). It may be formed into a small cylindrical shape.Next, we will explain how the shape memory alloy wire or nichrome wire heater whose periphery is coated with a bead-like coating by the above method is used. ) is a schematic explanatory diagram of an actuator in which three shape memory alloy wire rods 11-13 each having a different shape memorized are arranged in parallel and housed in a flexible casing 14, and are integrated by the casing 14. .
図に示すように、各形状記憶合金線材１１〜１３は互い
にビーズ状の被覆材９を介して接触しており、従って、
形状記憶合金線材１１−１３の何れかに通電しても他の
形状記憶合金線材に漏電する虞がない。As shown in the figure, the shape memory alloy wire rods 11 to 13 are in contact with each other via the bead-shaped covering material 9, and therefore,
Even if any of the shape memory alloy wires 11 to 13 is energized, there is no risk of electrical leakage to other shape memory alloy wires.
ｉｌｍ電された形状記憶合金線材１１〜１３の何れかの
発熱は、被覆材９の相互間に形成した間隙から放敗され
、他の形状記憶合金線材に対し熱影響を及ばず虞がある
。このため、ケーシング１４内に冷却空気等を流通させ
ることによって、他の形状記憶合金線材に対する熱影響
を防止すると共に、通電を遮断された形状記憶合金線材
を速やかに冷却し得るように横威している．また通電さ
れた形状記憶合金線材１１〜ｌ３の何れかの発熱は被覆
材９を介してケーシングｌ４、及び接触する他の被覆材
９に伝達されるが、被覆材９の形状を球状とした場合に
は接触部が点接触となるため、熱伝達が少ない。The heat generated by any one of the shape memory alloy wires 11 to 13 subjected to the irradiation is dissipated through the gap formed between the covering materials 9, and there is a possibility that it will not have a thermal effect on the other shape memory alloy wires. For this reason, by circulating cooling air or the like within the casing 14, it is possible to prevent thermal effects on other shape memory alloy wires and to quickly cool the shape memory alloy wires that have been cut off from electricity. ing. Further, the heat generated by any of the energized shape memory alloy wires 11 to 13 is transmitted to the casing l4 and the other sheathing materials 9 in contact through the sheathing material 9, but when the sheathing material 9 has a spherical shape Because the contact area is point contact, there is little heat transfer.
通電された形状記憶合金線材１１〜ｌ３の何れかが記憶
形状を回復するに際し、被覆材９が相互に適当な間隔を
持って配列されていることから、該被覆材９は形状記憶
合金線材の形状回復動作に伴って相互の位置を変更する
ことが可能であり、従って、通電された形状記憶合金線
材の形状回復動作を阻害する虞がない。When any of the energized shape memory alloy wires 11 to 13 recovers its memorized shape, the sheathing materials 9 are arranged at appropriate intervals, so that the sheathing materials 9 It is possible to change the mutual positions along with the shape recovery operation, and therefore there is no possibility that the shape recovery operation of the energized shape memory alloy wire will be inhibited.
第６図は周囲にビーズ状の被覆材９を形成したニクロム
線をヒーターに適用した場合の模式説明図である。FIG. 6 is a schematic explanatory diagram when a nichrome wire with a bead-shaped coating material 9 formed around it is applied to a heater.
図に於いて、周囲をビーズ状の被覆材９によって被覆さ
れたニクロム線ヒーター１５はコイル状に巻かれて金属
管１６内に収納されている。図に示すように、ニクロム
純ヒーター１５は互いに被覆材９を介して接触しており
、該ヒーターｌ５に通電してもショートする虞が無く、
また金属管ｌ６にも被覆材９を介して接触するため、漏
電する虞もない。In the figure, a nichrome wire heater 15 whose periphery is covered with a bead-like coating material 9 is wound into a coil and housed in a metal tube 16. As shown in the figure, the pure nichrome heaters 15 are in contact with each other via the covering material 9, and there is no risk of short circuiting even if the heaters 15 are energized.
Furthermore, since it also contacts the metal tube 16 via the covering material 9, there is no risk of electrical leakage.
この場合、従来のシーズヒーターの如く、金属管内に絶
縁粉末を充填する必要がないことから、従来のシーズヒ
ーターと同一発熱のヒーターを形成する際に、金属管１
６の寸法を小さくすることが可能となり、且つヒーター
ｌ５の発熱が絶縁粉末の加熱に消費されることがないた
め、速やかに昇温させることか可能となる．
尚、形状記憶合金或いは発熱体等の線材ｌをビーズ状の
被覆材９によって被覆した場合には、この被覆によって
以下の効果を得ることが可能である。In this case, unlike conventional sheathed heaters, there is no need to fill the metal tube with insulating powder, so when forming a heater that generates the same heat as a conventional sheathed heater, the metal tube 1
6 can be made smaller, and the heat generated by the heater 15 is not consumed in heating the insulating powder, making it possible to quickly raise the temperature. Incidentally, when the wire l such as a shape memory alloy or a heating element is covered with a bead-shaped covering material 9, the following effects can be obtained by this covering.
即ち、被覆材９が隣接する他の物体と当接しても漏電の
虞が無い．
被覆材９の他の物体に対する接触が点接触となるため、
熱の伝達面積を小さくすることが可能となる。That is, even if the covering material 9 comes into contact with another adjacent object, there is no risk of electrical leakage. Since the contact of the covering material 9 with other objects is a point contact,
It becomes possible to reduce the heat transfer area.
線材を変形させた場合、被覆材９が相互に位置を変更す
ることが可能であり、従って線材の変形を阻害すること
が無い．
被覆材９によって被覆した複数の線材を並列させて一体
化した場合、これ等の線材の間に被覆材９の接触による
空間が生じることから、該空間に冷却空気を流通させる
ことが可能となり、従って特定の線材の発熱によって他
の線材が影響を受けることか無い．
被覆材９がビーズ状に形成されることから、断面が小さ
く且つ重量も小さいため急激な温度変化が発生してもヒ
ートショックが少ない。When the wire is deformed, the sheathing material 9 can mutually change its position, so that the deformation of the wire is not inhibited. When a plurality of wire rods covered with the sheathing material 9 are arranged in parallel and integrated, a space is created between these wire rods due to the contact of the sheathing material 9, so it becomes possible to circulate cooling air in the space, Therefore, the heat generated by a particular wire does not affect other wires. Since the covering material 9 is formed into a bead shape, the cross section is small and the weight is small, so even if a sudden temperature change occurs, there is little heat shock.
く発明の効果〉
以上詳細に説明したように、本発明に係る線材の被覆方
法は、被覆すべき線材をセラミ，クス材料又は合成樹脂
材料の中空材の押出型の端面に当接させ、前記押出型か
ら粘土状のセラξソクス材料又は溶融状態の合成樹脂材
料を押出戒形することによって線材の周囲にパイプ状の
被覆層を形成し、次いで該被覆材の外周に所定の形状を
持った溝を形成した後、線材と該線材の周囲に形成した
溝を有する被覆層とを焼戊又は直ちに冷却することで線
材の周囲にビーズ状の被覆を形成するよう構戒したので
、人手を患わすこと無く連続した工程で線材の周囲にセ
ラξツクス又は合成樹脂からなるビーズ状の被覆を施す
ことが出来る。Effects of the Invention> As explained in detail above, the method for coating a wire according to the present invention involves bringing the wire to be coated into contact with the end surface of an extrusion mold for a hollow material made of ceramic, wood or synthetic resin material, and A pipe-shaped coating layer is formed around the wire by extruding a clay-like ceramic material or a molten synthetic resin material from an extrusion mold, and then a pipe-shaped coating layer is formed around the outer circumference of the coating material. After forming the grooves, we created a bead-shaped coating around the wire by burning or immediately cooling the wire and the coating layer with the grooves formed around the wire, which required less manual labor. A bead-shaped coating made of ceramics or synthetic resin can be applied around the wire in a continuous process without any interruption.
このため、被覆のための作業コストを低減することが出
来、且つ品質の一定した被覆を施すことが出来る等の特
徴を有するものである。Therefore, it has features such as being able to reduce the work cost for coating and being able to provide a coating of constant quality.
第１図（Ａ）〜（Ｆ）は本発明に係る線材の被覆方法の
工程順説明図、第２図は異なる長さの形状記憶合金線材
を接合して構成した形状記憶合金の複合体の説明図、第
３図（Ａ） ． （Ｂ）は押出型の説明図、第４図は成
形体に形成した溝の説明図、第５図（＾），（８）は形
状記憶合金の複合体の模式説明図、第６図はヒーターの
模式説明図である。
■は線材、２は押出型、３は押出機、４はチャンク、５
は戊形体、７は工具、８は溝、９は被覆材、１１−１３
は形状記憶合金線材、ｌ４はケーシング、ｌ５はニクロ
ム線ヒーター、ｌ６は金属管である。Figures 1 (A) to (F) are step-by-step explanatory diagrams of the wire coating method according to the present invention, and Figure 2 shows a shape memory alloy composite formed by joining shape memory alloy wires of different lengths. Explanatory diagram, Figure 3 (A). (B) is an explanatory diagram of the extrusion mold, Fig. 4 is an explanatory diagram of the grooves formed in the compact, Figs. 5 (^) and (8) are schematic explanatory diagrams of the shape memory alloy composite, and Fig. 6 is FIG. 2 is a schematic explanatory diagram of a heater. ■ is wire rod, 2 is extrusion mold, 3 is extruder, 4 is chunk, 5
is a rod, 7 is a tool, 8 is a groove, 9 is a covering material, 11-13
is a shape memory alloy wire, l4 is a casing, l5 is a nichrome wire heater, and l6 is a metal tube.
Claims (3)
材の端部を当接させ、前記押出型からセラミックス材料
の中空材を押出成形することによって前記線材の周囲に
セラミックス材料による被覆層を形成し、次いで前記被
覆層の外周に所定の形状を持った溝を形成し、その後焼
成して線材の周囲にビーズ状のセラミックス被覆を形成
することを特徴とした線材の被覆方法。(1) The end of the wire is brought into contact with the front end surface of an extrusion mold for a hollow ceramic material, and the hollow ceramic material is extruded from the extrusion mold to form a coating layer of the ceramic material around the wire. A method for coating a wire rod, comprising forming a groove with a predetermined shape on the outer periphery of the coating layer, and then firing it to form a bead-shaped ceramic coating around the wire rod.
端部を当接させ、前記押出型から合成樹脂材料の中空材
を押出成形することによって前記線材の周囲に合成樹脂
材料による被覆層を形成し、前記被覆層が可塑性を保持
している間に該被覆層の外周に所定の形状を持った溝を
形成し、その後常温まで冷却して線材の周囲にビーズ状
の合成樹脂被覆を形成することを特徴とした線材の被覆
方法。(2) The end of the wire rod is brought into contact with the front end surface of an extrusion mold for a hollow material made of synthetic resin material, and the hollow material made of synthetic resin material is extruded from the extrusion mold, so that the synthetic resin material is formed around the wire material. A coating layer is formed, and while the coating layer retains its plasticity, a groove with a predetermined shape is formed on the outer periphery of the coating layer, and then it is cooled to room temperature and bead-shaped synthetic resin is formed around the wire. A method for coating a wire, characterized by forming a coating.
於いて、線材の周囲に形成した被覆層の外周を所定の形
状に成形すると共に切断することを特徴とした線材の被
覆方法。(3) In the method for coating a wire rod according to claim (1) or (2), the outer periphery of the coating layer formed around the wire rod is formed into a predetermined shape and cut. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15064389A JPH0355720A (en) | 1989-06-15 | 1989-06-15 | Coating method of wire rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15064389A JPH0355720A (en) | 1989-06-15 | 1989-06-15 | Coating method of wire rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0355720A true JPH0355720A (en) | 1991-03-11 |
Family
ID=15501335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15064389A Pending JPH0355720A (en) | 1989-06-15 | 1989-06-15 | Coating method of wire rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0355720A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100412077B1 (en) * | 2001-08-14 | 2003-12-24 | 한국기계연구원 | The thermal barrier coating solution for high temperature superconducting long wire and the synthesis method of the same |
-
1989
- 1989-06-15 JP JP15064389A patent/JPH0355720A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100412077B1 (en) * | 2001-08-14 | 2003-12-24 | 한국기계연구원 | The thermal barrier coating solution for high temperature superconducting long wire and the synthesis method of the same |
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