200405948 (1) 玖、發明說明 【發明所屬之技術領域】 本發明是關於光纖連接器所使用的套圈，更詳細爲關 於可將複數條光纖插入套圈的套圈之製造方法，可正確地 連接兩個套圈彼此的套圈之製造方法，可自使金屬附著成 長的電鑄體正確地加工套圈的套圈之製造方法。 【先前技術】 一般光纖連接器如第7圖（b)所示由高精度地保持直 徑約0· 1 3mm的兩條光纖32a、32b於預定位置，固定成 同軸狀用的兩個管狀零件（以下稱爲套圈）1 1 a、1 1 b，與面 對面保持這些套圈1 1 a、1 1 b的整列部3 3構成。此套圈 1 1例如具有如第7圖（a)所示的圓柱形狀，在長度8mm左 右的圓柱中心沿著長度方向形成有0 ==〇· 1 26mm的真圓的 貫穿孔1 2。 習知套圈11的製造方法有如日本再公表00/03 1 5 74 號公報所示者。以下，針對此習知方法來說明。 第8圖所示的電鑄裝置1 0具備電鑄浴2 6與塡充於此 電鑄浴26中的電鑄液1 3，與配置於電鑄浴26內的陽極 1 4以及陰極1 8。前述陽極1 4是在設置於電鑄浴2 6底部 的基座3 4上包圍陰極的電極線材1 9而配設四條。此陰極 1 8如後述配設於支持夾具1 5上，電氣連接於貼於支持夾 具1 5的上下端部間的電極線材1 9。在基座3 4上攪拌用 的空氣噴嘴1 6係在電極線材1 9的外周方向以9 0度的間 -5- (2) 200405948 隔配設。 電鑄液1 3係依照想電鑄在電極線材1 9周圍 質來決定。 前述陽極1 4係依照想電鑄的金屬而選擇， 、銅、鈷等選定，可適宜使用板狀、球狀者。使 電極的情形，例如以放入鈦製的籃（basket)，聚 袋覆蓋來使用。 前述空氣噴嘴1 6是由其孔吹出少量的空氣 液1 3。但是，電鑄液1 3的攪拌不限定於利用空 他可採用螺旋槳、超音波、超振動等的手法。 電極線材1 9可適宜選擇使用：由鐵或其合金 合金、銅或其合金等的金屬線構成者、由在其金 進行薄的焊錫電鍍者、尼龍（nylon)、聚酯、四氟 脂等的塑膠線構成者等。其中塑膠線的情形由於 予導電性，故需要鎳、銀等的無電解電鍍。電I 因決定由電鑄得到的套圈1 1的內徑，故在線的 圓度以及直線性中要求高精度者。電極線材19 用鑄模（d i e s )的擠壓或利用拉絲的方法、無心加 粗度與真圓度與直線性的調整。在現時點中對於 μ m的不銹鋼線的情形，例如可得到± 〇 · 5 // m左 範圍的不銹鋼線材製品。 根據第9圖詳細說明支持夾具1 5 a。第9圖 圖，第9圖（b)爲由下板21的B-B方向看的底頋 夾具1 5 a係上板2 0與下板2 1藉由四根支柱2 2 的金屬材 由鎳、鐵 用球狀的 酯製的布 攪拌電鑄 氣者，其 、錕或其 屬線之上 化乙烯樹 在表面賦 i線材19 粗度、真 可藉由利 工等實施 直徑1 2 5 右的誤差 (a)爲側視 圖。支持 連結，上 -6 - (3) (3)200405948 板〇 〃下板21例如以聚氯乙烯樹脂、聚醯胺樹脂、聚甲 醛樹脂或聚乙烯樹脂的電氣絕緣材料製造，支柱22係以 不銹鋼、鈦等的金屬或塑膠製造。上板2〇以及下板21係 以螺絲分別與支柱22固定。在上板2〇的中央當作陰極 1 8的不銹鋼螺絲2 3 a係貫通上板2 0而配設。不銹鋼螺絲 23a係在上板20的底面固定不銹鋼製的彈簧17的一端 17a。在下板21的中央同樣地不銹鋼螺絲23b係貫通下板 21突出於下板21的頂面而配設，塑膠製的夾子25係固 疋於螺絲2 3 b。如前述在下板2 1，空氣噴嘴1 6用的圓孔 2 4被穿孔於四個位置。電極線材1 9的一端係掛於不銹鋼 製的彈簧1 7的他端1 7 b，一邊拉引電極線材1 9拉伸彈簧 1 7 ’ 一邊以夾子2 5把持電極線材1 9的他端。如此，藉由 安裝電極線材1 9於支持夾具1 5 a，使電極線材1 9在錯直 方向筆直地伸展的狀態下被支持在電鑄浴26中。 第9圖所示的支持夾具15a爲電鑄一芯型式的套圈 1 1用的夾具，對於電鑄二芯型式的套圈1 1的情形，例如 可使用像第1 〇圖所示的構造的支持夾具1 5b。在第1 0圖 所示的支持夾具1 5 b中，在上板2 0與下板2 1之間配設有 塑膠製的輔助構件2 7於兩個位置，在此輔助構件2 7的中 央部於兩個位置埋設有穿設有細孔2 9的塑膠製的線保持 構件2 8，而且在上板2 0與下板2 1，不銹鋼螺絲2 3與夾 子2 5分別配設於兩個位置。而且，爲了兩條電極線材1 9 的預定間隔與平行度的保持’在支持於輔助構件2 7間的 電極線材1 9配設有隔著預定的距離一體化電極線材1 9的 (4) (4)200405948 焊錫4 5。這些構造以外，支持夾具1 5 b具有與第9圖所 示的支持夾具1 5 a同樣的構造。 三芯型式以上的情形與第1 0圖所示的支持夾具1 5 b 一樣，依照線的數目使線保持構件2 8變形，而且使不銹 鋼螺絲2 3與夾子2 5增加。但是，保持電極線材1 9的方 法取代彈簧1 7例如在拉引電極線材1 9的方法使用橡膠等 的彈性構件也可以，而且在電極線材1 9的下端附加重物 也可以。 在如上述的構成中，說明使用電鑄裝置1 0藉由電鑄 形成套圈1 1的操作。 .對電鑄浴2 6塡充電鑄浴1 3後，對陽極1 4以及陰極 18間施力□ DC電壓以成爲4〜20A/dm2左右的電流密度。以 此電流密度藉由電鑄大約一天，可在電極線材1 9的周圍 使粗度直經3 mm的電極沉積物3 0成長。電鑄的終了後， 由電鑄浴26取出支持夾具1 5，由支持夾具1 5 a卸下電極 線材1 9。卸下的方法有由電極沉積物3 0拔出的方法、擠 壓的方法、藉由加熱的酸或鹼性水溶液溶解的方法等。所 得到的電極沉積物藉由例如使用薄刃刀具切斷成預定的長 度，可當作套圈1 1使用。特別是藉由此方法製造的套圈 1 1的內徑的尺寸精度極高，其精度由前述的電極線材1 9 的尺寸誤差決定。此外，爲了提高套圈1 1的外徑的真圓 度’精加工外周部較佳。外周部的精加工若以N C機械加 工切削外周的話佳。 (5) (5)200405948 【發明內容】 近年來不僅一芯型式的套圈1 1，二芯以上的多芯型 式的套圈 π的需求升高，需要可高精度地接合的多芯型 式的套圈1 1。 在上述日本再公表0 0 / 0 3 1 5 7 4號公報所記載的習知技 術中，配置其芯數份的電極線材1 9，藉由令其全部爲陰 極使電極沉積物3 0附著形成多芯構造。因此，以各個電 極線材1 9爲中心，電極沉積物3 0附著成同心圓狀，其結 果外形不爲真圓，需藉由外周部的精加工加工剖面成圓形 或長方形等。其加工時的定位是以貫穿孔1 2的列爲基準 線而定位，惟貫穿孔1 2爲了不損傷，必須以基準線爲非 接觸的假想線，有正確的定位困難的問題。 第1 1圖（a)、（b)、（c)是顯示在藉由習知技術製造多 芯型式的套圏1 1的過程中，電極沉積物3 0的附著樣子的 圖。 第11圖（a)是顯示在二芯型式的套圈11的製造過程 中，電極沉積物3 0附著於電極線材1 9的過程圖，第1 1 圖（b)是顯示在三芯型式的套圈1 1的製造過程中，電極沉 積物30附著於電極線材19的過程圖，第1 1圖（〇是顯示 在四芯型式的套圈1 1的製造過程中，電極沉積物3 0附著 於電極線材1 9的過程圖。在分別隨著時間經過，電極沉 積物30附著成同心圓狀時，如第1 1圖（a)的二芯型式配 置電極線材1 9成一直線狀的情形，在兩個電極沉積物3 0 之間產生凹陷。在第1 1圖（b)、（c)所示的三芯以及四芯 (6) (6)200405948 的電極線材1 9的配置中’在電極沉積物3 0附著某種程度 的階段，由於電鑄液無法遍及中心部分使間隙3 1產生’ 有中心部分的強度變脆之虞。 本發明乃鑒於上述問題點所進行的創作’其目的爲提 供在以電鑄方式製造多芯型式的套圈 Π時’可正確地進 行外形加工的定位的套圈之製造方法以及充分保持多芯化 時的中心強度的套圈之製造方法。 本發明爲一種套圈之製造方法’係將陰極側的電極線 材與陽極側的電極浸瀆於電鑄浴內的電鑄液’藉由電鑄在 陰極側的電極線材使金屬附著成長，形成棒狀的電鑄體’ 藉由此電鑄體製造套圏的方法，其特徵爲：在前述陰極側 的電極線材的周邊配置一至複數條虛設（dummy)線材進行 電鑄，一體埋設前述陰極側的電極線材與虛設線材而形成 電鑄體，自此形成的電鑄體至少去除虛設線材’以形成光 纖插入用貫穿孔。 藉由以這種構成，電極沉櫝物以電極線材爲中心成長 成同心圓狀，此時，因在電極線材的周邊至少配置一條以 上的虛設線材，故芯線部分也被一體的電極沉積物覆蓋’ 藉由至少拔出虛設線材，可製造真圓形的多芯型式的套圈 【實施方式】 說明本發明的實施形態。 本發明係將當作電極通電的至少一條電極線材與不在 -10- ^•6 (7) (7)200405948 此電極線材的周邊通電的一至複數條虛設線材配置於電鑄 液之中，藉由電鑄在電極線材的周圍使電極沉積物附著成 長。更藉由使其成長，也捲入虛設線材使電極沉積物附著 成長，形成棒狀的電鑄體。據此，藉由自成長的電鑄體至 少拔出虛設線材，形成貫穿孔，成爲插入有光纖的套圈。 虛設線材藉由取複數條，以形成有多芯套圈。而且， 電極線材藉由自電鑄體拔出形成貫穿孔，作成插入有光纖 的套圏也可以，而且作成不拔出的狀態也可以。 虛設線材不限於插入有光纖的貫穿孔，藉由配置比此 光纖用還大的直徑的未通電的線材，形成嵌合用定位孔或 加工用對位孔，可當作插頭（plug)的定位突起的插入插座 (socket)孔使用，或當作電鑄體的加工時的對位的基準孔 使用。 此電鑄體的加工時的定位的基準孔不限於圓形，爲三 角形、其他的多角形、橢圓形、半圓形等均可。對於多角 形的情形，可作爲以插頭的定位突條而嵌合者來利用。 [實施例] 本發明的套圈之製造方法所使用的電鑄裝置1 0基本 上與第8圖所示的裝置並無不同，但在本發明中係混合存 在通電的電極線材與不通電的虛設線材，配置於電鑄液之 中以製造多芯型式的套圈。 依照第3圖更詳細說明。 支持夾具3 5係由電氣絕緣材料構成的上板2 0與下板 -11 - (8) (8)200405948 2 1藉由由金屬或塑膠構成的四條支柱22以螺絲連結而構 成。在這些上板2 G與下板2 1之間的上下兩個位置配設有 輔助構件2 7，在這些輔助構件2 7分別於其中央部三個位 置埋設有穿設細孔2 9的線保持構件2 8。 前述上板2 0的中央的一個螺絲2 3 a與其周圍的複數 個螺絲3 7 a互相電氣絕緣，貫通上板2 0而配設。在這些 之中貫通突出到中央的螺絲23a的上板20的底面的下端 部固定有彈簧1 7的一端1 7 a。而且，前述中央的螺絲2 3 a 的上端部係當作陰極1 8連接於負電源。 在貫通突出到前述螺絲23a周圍的複數個螺絲37a的 上板20的底面的下端部也分別固定有彈簧1 7的一端1 7a 〇 前述下板2 1的中央的一個螺絲2 3 b與其周圍的複數 個螺絲3 7 b互相電氣絕緣，貫通下板2 1而配設。在貫通 突出到這些中央的螺絲2 3 b與其周圍的螺絲3 7 b的上板 2 0的頂面的上端部分別固定有夾子2 5。而且，在下板2 1 嵌合空氣噴嘴1 6用的圓孔24係穿設於四個位置。 在中央的彈簧1 7的下端掛有前述電極線材1 9的上端 ，一邊拉引電極線材1 9拉伸彈簧1 7，一邊以中央的夾子 2 5把持電極線材1 9的下端。在其他的彈簧1 7的下端掛 有前述虛設線材3 6的上端，一邊拉引此虛設線材3 6拉伸 彈簧1 7，一邊以其他夾子2 5把持虛設線材3 6的下端。 此處，虛設線材3 6可適宜選擇使用鐵或其合金' @ 或其合金、銅或其合金等的金屬線，以及尼龍、聚酯、® ή/? -12 - (9) (9)200405948 氟化乙烯樹脂等的塑膠線等。對於金屬線的情形，藉由配 設像氟塗層（coating)或氧化膜的絕緣膜，使其具有電氣地 絕緣性，並且可在電鑄後容易拔出。但是，虛設線材3 6 爲了不受電極線材1 9的影響，若可以的話爲具有絕緣性 的材料更佳。 據此，本發明係陰極在通電的電極線材1 9的周圍與 此電極線材1 9平行，配設虛設線材3 6的點具有特徵。 第一實施例（第1圖） 第1圖是顯示製造排列三芯成一列而配設的套圈1 1 的過程。 第1圖（a)是在支持夾具35固定電極線材19與在其 兩側具有預定間隔的虛設線材3 6。電極線材1 9與虛設線 材3 6都使用與插入的光纖3 2同徑大小者。 第1圖（b)是以電鑄裝置10開始進行電鑄，電極沉積 物3 0在電極線材1 9的周圍慢慢地附著成同心圓狀。 第1圖（〇是隨著電極沉積物30的附著成長，虛設線 材3 6慢慢地開始被電極沉積物3 0覆蓋。 第1圖（d)是電極沉積物3 0更附著的話，虛設線材3 6 完全被覆蓋。到此爲止的電極沉積物3 0的成長因通電的 電極線材1 9爲一條，故以電極線材1 9爲中心電極沉積物 3 0經常成長成同心圓狀。 第1圖（e)是然後持續電鑄到成長到目的的粗度爲止 ，成爲預定的粗度後終了。 -13- (10) 200405948 第1圖（f)是此電鑄終了後，以習知公知的方 拉拔、撺壓、溶解等去除電極線材1 9與虛設線材 形成有具有三個貫穿孔12的三芯型式的套圈11。 在習知技術中，形成多芯型式的套圈1 1的情 行地配置複數條電極線材1 9，完全通電進行電鑄 成後的剖面圖不會成爲真圓形，在電鑄後加工成真 其他形狀。因此，加工成預定形狀時的效率差，而 也難。 但是，以本發明的方法形成的多芯型式的套圈 以通電的電極線材1 9 一條，在其周邊配設不通電 線材3 6，故成長成略真圓形，其結果對於當作圓 圈1 1使用的情形，幾乎無實施外形加工的必要， 單。而且，因通電的電極線材1 9爲一條，故不產 ί几積物3 0由像習知技術的多方向成長的結果所產 隙3 1 ’可得到強度上也穩定的套圈。而且，因虛 3 6不通電，故可事先實施藉由電鑄終了後的拉拔 、溶解等去除的作業容易進行的材料或處理。 在第1圖的實施例中，說明在電極線材丨9的 置兩條虛設線材3 6，三芯一列的套圈1 1的情形， 限定於此。例如在第1圖中雖然拔出兩條虛設線才 但電極線材1 9不拔出作爲二芯的套圏1 1的例子， 線材1 9的單側或兩側配置兩條以上的虛設線材3 6 ，在電極線材1 9的周圍配置三條以上的虛設線材 同心圓的多芯套圈1 1的例子，在縱或橫以兩列以 法藉由 36，以 形因平 ，故完 圓形或 且加工 1 1係 的虛設 形的套 且極簡 生電極 生的間 設線材 、擠壓 兩側配 惟並非 ί 36， 在電極 的例子 當作 上的例 -14- (11) (11)200405948 子，混合存在粗度不同的光纖的例子等適宜的組合也可以 第二實施例（第2圖） 在前述第一實施例中，顯示在通電的電極線材1 9的 周邊配置與電極線材1 9同徑的虛設線材3 6，形成多芯型 式的套圈1 1的例子，惟本發明並非限定於此，形成光纖 插入孔以外的目的例如以形成嵌合用的孔的目的，也可配 置與電極線材1 9不同的直徑者。 第2圖（a)是在電極線材1 9的周圍配設虛設線材3 6 ( 在此例爲四條）。電極線材1 9以及虛設線材3 6是以插入 的光纖爲同徑大小者。在此第二實施例中，更於虛設線材 3 6的外周，以電極線材1 9爲中心點對稱地配置直徑比電 極線材1 9以及虛設線材3 6還大的嵌合用定位用線材3 8 。此嵌合用定位用線材3 8與虛設線材3 6 —樣爲不使其通 電者，其材質也用與虛設線材3 6 —樣者而構成。 第2圖（b)是在此狀態下，開始使用電鑄裝置10，電 極丨几積物3 0在電極線材1 9的周圍慢慢地附著成長成同心 圓狀。 第2圖（c)是隨著電極沉積物30的附著進行，虛設線 材3 6慢慢地開始被電極沉積物3 0覆蓋。 第2圖（d)是電極沉積物30更附著的話，虛設線材36 完全被覆蓋。嵌合用定位用線材3 8也慢慢地開始被電極 沉積物3 0覆蓋。 •15- (12) (12)200405948 第2圖（e)是然後嵌合用定位用線材38也完全被覆蓋 ’更持續電鑄到成長到目的的粗度爲止，成爲預定的粗度 後終了。 第2圖（f)是自此電鑄終了後的套圈，分別藉由拉拔 、擠壓、溶解等去除通電的電極線材1 9、未通電的虛設 線材3 6、未通電的嵌合用定位用線材3 8，形成具有五個 貫穿孔12，更進一步具有嵌合用孔40的套圏11。 以上述方法形成的嵌合用孔40係在連結如第6圖（b) 或（c )所示的插入光纖3 2的套圈1 1彼此的情形使用。即 在第6圖（b)中，藉由兩個嵌合用孔4 0以一側的套圈1 1 a 爲插座，而且以使嵌合銷42 —部分突出固定地安裝於兩 個嵌合用孔4 0的他側的套圈1 1 b爲插頭，可在正確的位 置接合兩個套圈11a、lib。 而且’在第6圖（c)中，藉由兩個嵌合用孔4 0以一側 的套圈1 1 a爲插座，而且以預先以其他方法與外殻一體配 設嵌合銷42的他側的套圏！丨b爲插頭，可正確地接合兩 個套圈11a、lib。 藉由配設這種嵌合用定位用線材3 8，隨著成爲多芯 構造可容易地進行要求更高精度的接合的對位。 第三實施例（第4圖） 在前述第一、第二實施例中，顯示以在電鑄裝置i 〇 得到的剖面爲真圓狀者當作套圈Π使用的例子，有依照 製品加工成其他形狀的情形。因此，在第三實施例中，於 -16- (13) (13)200405948 虛設線材3 6的外周配設端面爲三角形的加工用對位用線 材3 9，據此，精度佳地進行外形加工。 第4圖（a)是在電極線材19的左右各配置兩條虛設線 材3 6成一·直線狀，更於其兩側以電極線材1 9爲中心點對 稱地配置三角形的加工用對位用線材3 9。此加工用對位 用線材3 9與虛設線材3 6 —樣爲不使其通電者，其材質也 用與虛設線材3 6 —樣者構成。 第4圖（b)是在此狀態下，使用電鑄裝置10，電極沉 積物3 0附著到預定的粗度爲止，藉由拉拔、擠壓、溶解 等去除電極線材1 9、虛設線材3 6、加工用對位用線材3 9 〇 第4圖（c)是然後以在去除加工用對位用線材39後產 生的對位缺口 4 1爲基準，進行外形加工。習知是以插入 光纖32的貫穿孔12爲基準，由於此爲了光纖32的插入 用，以非接觸加工，故正確的加工很困難，但因對位缺口 4 1爲可接觸，故據此可進行正確的加工。加工例可舉將 剖面加工成長方形的例子。而且，如第6圖（d)所示，藉 由以具有對位缺口 4 1的一側的套圈1 1 a爲插頭，而且， 預先在外殼以一體配設卡合突條44於嵌合凹部4 3內部的 他側的套圈1 1 b爲插座，可正確地接合兩個套圈11a、 1 1 b ° 第四實施例（第5圖） 在第四實施例中係配設第二實施例的嵌合用定位用線 -17· (14) (14)200405948 材3 8與第三實施例的加工用對位用線材3 9的兩方的例子 〇 第5圖（a)是在電極線材1 9的左右各配置兩條虛設線 材3 6成一直線狀，在電極線材1 9的左右方向的更外側， 以電極線材1 9爲中心點對稱地配置直徑比電極線材1 9以 及虛設線材3 6還大的嵌合用定位用線材3 8，且在電極線 材1 9的上下方向的外側，以電極線材1 9爲中心點對稱地 配置三角形的加工用對位用線材3 9。此嵌合用定位用線 材3 8、加工用對位用線材3 9與虛設線材3 6 —樣爲不使 其通電。 第5圖（b)是在此狀態下使用電鑄裝置10，電極沉積 物3 0附著到預定的粗度爲止，藉由拉拔、擠壓、溶解等 去除電極線材1 9、虛設線材3 6、嵌合用定位用線材3 8、 加工用對位用線材3 9。 第5圖（c)是然後以藉由拉拔、擠壓等產生加工用對 位用線材3 9的加工用孔4 1爲基準，進行外形加工。此外 形加工後如第 6圖（b)，藉由在稍微突出的狀態下嵌合固 定嵌合用銷於一側的套圈1 1 a的兩個嵌合用孔40，當作 與他側的套圈1 1 b接合時的嵌合用的銷使用，可容易進行 正確的對位。 此外，在第四實施例中，例如如第6圖（a)所示，不 去除電極線材1 9使其殘留也可以。電極線材1 9、虛設線 材3 6、嵌合用定位用線材3 8、加工用對位用線材3 9等係 預先考慮拉拔或濟壓容易度’決定材料或表面加工，若以 -18- (15) (15)200405948 不去除電極線材1 9爲前提，則無須考慮拉拔容易度、濟 壓容易度等的除去方法，可作爲電極線材1 9使用的材料 的範圍增加。 在前述第四以及第五實施例中電極線材1 9以一條， 藉由在其周邊配置虛設線材3 6以構成多芯型式的套圈i i ，對於如第4圖（c)以及第5圖（c)僅在某一方向構成貫穿 孔1 2的情形，加工後的套圈1 1的形狀爲平的情形，因無 產生像第1 1圖（b)、（〇的間隙3 1，故分別適宜組合各複 數條的複數條電極線材1 9與虛設線材3 6、嵌合用定位用 線材3 8、加工用對位用線材3 9，製造套圈1 1也可以。 在前述實施例中雖然以嵌合用定位用線材3 8爲端面 圓形，以加工用對位用線材3 9爲端面三角形，惟並非限 定於此，若是完成各個功能的話，爲像四角形、橢圓形、 星形等的形狀也可以，可適宜選擇。 在前述實施例中，電極線材1 9、虛設線材3 6、嵌合 用定位用線材3 8、加工用對位用線材3 9雖然以使用像第 3圖所示的支持夾具3 5固定於電鑄裝置1 0的構成，惟若 使位置關係不變而可藉由完全保持平行性的方法固定的話 則不限於實施例。 〔發明的功效〕 如果依照申請專利範圍第1項的發明，因在陰極側的 電極線材的周邊配置一至複數條虛設線材進行電鑄，一體 埋設前述陰極側的電極線材與虛設線材而形成電鑄體，自 戀 -19- (16) (16)200405948 此形成的電鑄體至少去除虛設線材，以形成光纖插入用貫 穿孔，故電極沉積物以電極線材爲中心成長成同心圓狀， 此時在線材的周邊至少配置一條以上的虛設線材，故所有 的線材均被電極沉積物覆蓋，可簡單地得到真圓形的多芯 型式的套圈。 而且，對於令通電的電極線材爲一條的情形，不產生 電極沉積物由像習知技術的多方向成長的結果所產生的間 隙，可得到強度上也穩定的套圈。而且，因虛設線材不通 電，故可事先實施藉由電鑄終了後的拉拔、擠壓、溶解等 去除的作業容易進行的材料或處理。 如果依照申請專利範圍第2項的發明，因在陰極側的 電極線材的周邊配置一至複數條虛設線材，在此虛設線材 的更進一步周邊配置一至複數條定位用線材進行電鑄，一 體埋設前述陰極側的電極線材與虛設線材與定位用線材而 形成電iff體’自此形成的電鑄體去除電極線材與虛設線材 之中的至少虛設線材，以形成光纖插入用貫穿孔，並且去 除定位用線材，形成與其他套圈的嵌合時的定位孔，故可 進行面對面連接同一多芯型式的套圈的情形的正確的對位 。特別是藉由配設嵌合用定位用線材，隨著成爲多芯構造 ，可容易進行要求更高精度的接合的對位。 如果依照申請專利範圍第3項的發明，僅藉由去除定 位用線材，定位孔可作爲插入嵌合其他套圈的插銷時的插 座的定位孔而利用。 如果依照申請專利範圍第4項的發明，僅藉由去除定 -20- (17) (17)200405948 位用線材，固定地安裝插銷，可作爲插入嵌合於其他套圈 的定位孔用的插頭而構成。 如果依照申請專利範圍第5項的發明，在陰極側的電 極線材的周邊配置一至複數條虛設線材，在此虛設線材的 更進一步周邊配置一至複數條對位用線材進行電鑄，一體 埋設前述陰極側的電極線材與虛設線材與對位用線材而形 成電鑄體，由此形成的電鑄體去除電極線材與虛設線材之 中的至少虛設線材’以形成光纖插入用貫穿孔，並且藉由 去除對位用線材，形成外形加工時的對位孔，故可以加工 用孔爲基準’進行正確的外形加工、其他加工，其結果可 正確地進行光纖接合的對位。 如果依照申請專利範圍第6項的發明，因自電鑄體去 除的線材被施以絕緣處理，故自電鑄體藉由拉拔或擠壓容 易去除虛設線材，孔的直徑也正確。 如果依照申請專利範圍第7項的發明，因自電鑄體去 除的線材是由電氣絕緣材料構成，故不實施與電極線材的 電氣的接觸防止用的絕緣處理或氧化膜、氟塗層處理等， 可製造多芯的套圏。 【圖式簡單說明】 第1圖是顯示依照本發明的套圈之製造方法的第一實 施例’（a)是顯示固定於電鑄浴內的電極線材與虛設線材 的配置的剖面圖’（b)〜（e)是顯示電極沉積物附著成長的樣 子的剖面圖’（f)是顯示完成的三芯型式的套圈的剖面圖 -21 - (18) (18)200405948 第2圖是顯示依照本發明的套圈之製造方法的第二實 施例，（a)疋$頁不固疋於電録浴內的電極線材、虛設線材 以及嵌合用定位線材的配置的剖面圖，（b )〜（e )是顯示電極 沉積物附著成長的樣子的剖面圖，（f)是顯示完成的五芯 型式的套圈的剖面圖。 第3圖是顯示依照本發明的套圈之製造方法所使用的 電鑄裝置的說明圖。 第4圖是顯示依照本發明的套圈之製造方法的第三實 施例，（a)是顯示固定於電鑄浴內的電極線材、虛設線材 以及加工用對位線材的配置的剖面圖，（b)是顯示電極沉 積物附著成長後的樣子的剖面圖，（〇是顯示外形加工完 成的五芯型式的套圈的剖面圖。 第5圖是顯示依照本發明的套圈之製造方法的第四實 施例’（a)是顯示固定於電鑄浴內的電極線材、虛設線材 、嵌合用定位線材以及加工用對位線材的配置的剖面圖， (M是顯示電極沉積物附著成長後的樣子的剖面圖，（c)是 顯示外形加工完成的五芯型式的套圈的剖面圖。 第6圖（a)是顯示不去除電極線材殘留構成的情形的 四芯型式的套圈的剖面圖，（b)是顯示以去除嵌合用定位 線材後的嵌合用定位孔當作插座者，與在去除嵌合用定位 線材後’固定地安裝嵌合銷當作插頭者的例子的剖面圖， (c)是顯示以去除嵌合用定位線材後的嵌合用定位孔當作 插座者’與預先一體配設嵌合銷與外殼當作插頭者的例子 -22- (19) 200405948 缺 與 長 光 (a) 他 形 的剖面圖，（d)是顯示以去除加工用對位線材後的對位 口當作嵌合凹部作爲插座者，與預先一體配設卡合突條 外殻當作插頭者的例子的斜視圖。 第7圖是顯示一芯型式的套圈圖，（a)是在垂直於 芯型式的套圈的長度方向切斷的剖面圖，以及在垂直於 度方向切斷的剖面圖，（b)是顯示以整列部33接合插入 纖的套圈的樣子的長度方向的剖面圖。 第8圖是習知的電鑄裝置的說明圖。 第9圖是顯不習知的電鑄裝置中的支持夾具圖， 爲前視圖，（b )爲底視圖。 第1 〇 Η疋威不習知的電鑄裝置中的支持夾具的其 例的側視圖。 第11圖是顯示使用習知的電鑄裝置製造套圈的情 圖’（a)爲二芯型式的剖面圖’（b)爲三芯型式的剖面圖 (C)爲四芯型式的剖面匱|。 符號說明 1 0 :電鑄裝置 1 1 :套圈 1 2 :貫穿孔 1 3 :電鑄液 1 4 :陽極 1 5 :支持夾具 1 6 :空氣噴嘴200405948 (1) 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to a ferrule used for an optical fiber connector, and more specifically to a manufacturing method of a ferrule capable of inserting a plurality of optical fibers into the ferrule, which can accurately A manufacturing method of a ferrule that connects two ferrules to each other is a manufacturing method of a ferrule that can accurately process a ferrule from an electroformed body with metal attached to it. [Prior art] As shown in FIG. 7 (b), a general optical fiber connector holds two optical fibers 32a, 32b with a diameter of approximately 0.13 mm at a predetermined position with high accuracy, and fixes two tubular parts for coaxial use ( Hereinafter referred to as a ferrule) 1 1 a, 1 1 b, and a whole row portion 3 3 holding these ferrules 1 1 a, 1 1 b face to face. This ferrule 11 has, for example, a cylindrical shape as shown in Fig. 7 (a), and a true circular through-hole 12 of 0 = = 0. 26 mm is formed along the length direction at the center of the cylinder with a length of about 8 mm. The manufacturing method of the conventional ferrule 11 is as shown in Japanese Republication Publication No. 00/03 1 5 74. This conventional method will be described below. The electroforming device 10 shown in FIG. 8 includes an electroforming bath 26, an electroforming solution 13 filled in the electroforming bath 26, and an anode 14 and a cathode 1 8 arranged in the electroforming bath 26. . The anodes 14 are provided with four electrode wires 19 surrounding the cathode on a base 34 provided at the bottom of the electroforming bath 26. This cathode 18 is arranged on a support jig 15 as described later, and is electrically connected to an electrode wire 19 attached between the upper and lower ends of the support jig 15. Air nozzles 16 for stirring on the base 34 are arranged at intervals of 90 degrees in the outer circumferential direction of the electrode wire 19-(2) 200405948. The electroforming solution 1 3 is determined according to the quality of the electrode wire 19 to be electroformed. The anodes 14 and 4 are selected according to the metal to be electroformed, and are selected from copper, cobalt, and the like, and those having a plate shape or a spherical shape can be suitably used. The electrode is used, for example, by placing a basket made of titanium and covering it with a polybag. The aforementioned air nozzle 16 blows a small amount of air liquid 13 through its hole. However, the stirring of the electroforming solution 1 3 is not limited to the use of propellers, ultrasonic waves, and super vibrations. The electrode wires 19 can be appropriately selected and used: those made of metal wires such as iron or its alloy alloy, copper or its alloy, those made of thin solder plated with gold, nylon, polyester, tetrafluoroester, etc. Plastic thread composer and so on. In the case of plastic wires, since electroconductivity is required, electroless plating such as nickel or silver is required. Since the electric diameter I determines the inner diameter of the ferrule 11 obtained by electroforming, those who require high accuracy in the roundness and linearity of the wire. The electrode wire 19 is extruded by a die (d i e s) or adjusted by wire drawing, and the centerless thickness and roundness and linearity are adjusted. In the case of a stainless steel wire of μm at the present point, for example, a stainless steel wire product in the range of ± 0 · 5 // m can be obtained. The supporting jig 1 5 a will be described in detail with reference to FIG. 9. Fig. 9 and Fig. 9 (b) are bottom clamps 1 5a viewed from the BB direction of the lower plate 21. The upper plate 20 and the lower plate 21 are made of nickel, For those who stir the electroformed gas with a spherical ester cloth made of iron, the ethylene tree or the metal wire is made of ethylene tree. The surface of the wire is given a thickness of 19, and a diameter of 1 2 5 can be implemented by a sharpener. (a) is a side view. Support connection, upper -6-(3) (3) 200405948 board 0 lower board 21 is made of electrical insulation material such as polyvinyl chloride resin, polyamide resin, polyoxymethylene resin or polyethylene resin, and the pillar 22 is made of stainless steel , Titanium and other metals or plastics. The upper plate 20 and the lower plate 21 are respectively fixed to the pillar 22 with screws. A stainless steel screw 2 3 a serving as a cathode 18 at the center of the upper plate 20 is disposed through the upper plate 20. The stainless steel screw 23a fastens one end 17a of a stainless steel spring 17 to the bottom surface of the upper plate 20. Similarly, a stainless steel screw 23b is arranged at the center of the lower plate 21 so as to penetrate through the lower plate 21 and protrude from the top surface of the lower plate 21. A plastic clip 25 is fixed to the screw 2 3b. As described above, the circular holes 2 4 for the air nozzles 16 in the lower plate 21 are punched at four positions. One end of the electrode wire 19 is attached to the other end 17 b of the stainless steel spring 17, and the electrode wire 19 is pulled and the spring 17 is stretched while the other end of the electrode wire 19 is held by the clip 2 5. In this manner, the electrode wire 19 is attached to the supporting jig 15a, and the electrode wire 19 is supported in the electroforming bath 26 in a state where the electrode wire 19 is stretched straight in a staggered direction. The support jig 15a shown in FIG. 9 is a jig for the electroformed one-core type ferrule 11. In the case of the electroformed two-core type ferrule 11, for example, a structure shown in FIG. 10 can be used. Support fixture 1 5b. In the support jig 1 5 b shown in FIG. 10, a plastic auxiliary member 2 7 is arranged between the upper plate 20 and the lower plate 21 at two positions, and in the center of this auxiliary member 27 A thread holding member 28 made of plastic with fine holes 29 is embedded in two positions, and the upper plate 20 and the lower plate 21, the stainless steel screw 2 3 and the clip 2 5 are respectively arranged in two position. In addition, in order to maintain a predetermined interval and parallelism of the two electrode wires 19, the electrode wires 19 supported between the auxiliary members 27 are provided with (4) (4) that integrates the electrode wires 19 at a predetermined distance ( 4) 200405948 solder 4 5. Except for these structures, the supporting jig 15b has the same structure as the supporting jig 15a shown in FIG. In the case of the three-core type or more, the wire holding member 28 is deformed in accordance with the number of wires, and the stainless steel screws 23 and the clips 25 are increased in the same manner as the supporting jig 15b shown in FIG. However, the method of holding the electrode wire 19 may be used instead of the spring 17. For example, an elastic member such as rubber may be used for the method of pulling the electrode wire 19, and a weight may be added to the lower end of the electrode wire 19. In the configuration described above, the operation of forming the ferrule 11 by electroforming using the electroforming apparatus 10 will be described. After charging the casting bath 13 to the electroforming bath 26, a DC voltage is applied to the anode 14 and the cathode 18 to achieve a current density of about 4 to 20 A / dm2. By electroforming at this current density for about one day, an electrode deposit 30 having a thickness of up to 3 mm can be grown around the electrode wire 19. After the electroforming is finished, the support jig 15 is taken out from the electroforming bath 26, and the electrode wire 19 is removed by the support jig 15a. The removal method includes a method of removing the electrode deposit 30, a method of squeezing, and a method of dissolving it by heating with an acid or an alkaline aqueous solution. The obtained electrode deposit is cut to a predetermined length by using a thin-edged knife, for example, and can be used as a ferrule 11. In particular, the dimensional accuracy of the inner diameter of the ferrule 11 manufactured by this method is extremely high, and its accuracy is determined by the dimensional error of the aforementioned electrode wire 19. In addition, in order to increase the true roundness of the outer diameter of the ferrule 11 ', the outer peripheral portion is preferably finished. The finishing of the outer periphery is better if the outer periphery is cut by N C machining. (5) (5) 200405948 [Summary of the invention] In recent years, not only the ferrule 1 of the one-core type, but also the multi-core type of the ferrule π of two or more cores have increased, and a multi-core type that can be joined with high precision Ferrule 1 1. In the conventional technique described in the aforementioned Japanese Republication Publication No. 0 0/0 3 1 5 7 4, the electrode wires 19 of a core number of parts are arranged, and the electrode deposits 30 are formed by making them all cathodes. Multi-core construction. Therefore, with each electrode wire 19 as the center, the electrode deposits 30 are attached in a concentric circle shape. As a result, the outer shape is not a true circle, and it needs to be rounded or rectangular in cross section by finishing processing on the outer periphery. The positioning during machining is based on the line of the through-holes 12 as the reference line. However, in order to prevent damage to the through-holes 12, the reference line must be a non-contact imaginary line, which has the problem of accurate positioning. Figures 11 (a), (b), and (c) are diagrams showing how the electrode deposits 30 adhere to each other during the process of manufacturing a multi-core type sleeve 8 by a conventional technique. FIG. 11 (a) is a process diagram showing that the electrode deposit 30 is attached to the electrode wire 19 during the manufacturing process of the two-core type ferrule 11, and FIG. 11 (b) is shown in the three-core type. During the manufacturing process of the ferrule 11, the process of attaching the electrode deposit 30 to the electrode wire 19 is shown in FIG. 11 (0 is shown in the manufacturing process of the four-core type ferrule 11. The electrode deposit 30 is attached In the process diagram of the electrode wire 19, when the electrode deposits 30 are attached concentrically with the passage of time, as in the case where the two-core type electrode wire 19 is arranged in a straight line in FIG. 11 (a), A depression is generated between the two electrode deposits 30. In the configuration of the three-core and four-core (6) (6) 200405948 electrode wires 19 shown in Figure 11 (b) and (c), 'in The electrode deposit 30 is attached to a certain stage, and because the electroforming solution cannot penetrate the center portion, the gap 31 may be generated. The strength of the center portion may become brittle. The present invention is made in view of the above problems, and its purpose In order to provide the correct shape when the ferrule Π is electroformed A method for manufacturing a ferrule for positioning and a method for manufacturing a ferrule that sufficiently maintains the central strength when multi-cored. The present invention is a method for manufacturing a ferrule, which involves dipping the electrode wire on the cathode side and the electrode on the anode side An electroforming solution in an electroforming bath is a method for producing a sleeve by using an electroformed body to grow metal by electrode wire on the cathode side to form a rod-shaped electroformed body. One or more dummy wires are arranged around the cathode electrode wire for electroforming, and the cathode electrode wire and the dummy wire are embedded in one body to form an electroformed body. At least the dummy wire is removed from the formed electroformed body since then. With this configuration, the electrode sinker grows into a concentric circle centering on the electrode wire. At this time, at least one dummy wire is arranged around the electrode wire, so the core wire portion Also covered by integral electrode deposits' By pulling out at least the dummy wire, a true circular multi-core type ferrule can be manufactured. [Embodiment] Describes the practicality of the present invention In the present invention, at least one electrode wire that is energized as an electrode and one or more dummy wires that are not energized around the electrode wire are disposed in the electroforming solution. The electrode deposits are grown by electroforming around the electrode wires. Furthermore, by growing them, they are also drawn into the dummy wires to grow the electrode deposits to form rod-shaped electroforms. Accordingly, by self-growth The electroformed body is pulled out of at least the dummy wire to form a through hole, which becomes a ferrule into which the optical fiber is inserted. The dummy wire is formed by taking a plurality of ferrules, and the electrode wire is pulled out from the electroformed body. The through-hole may be formed, and a ferrule into which an optical fiber is inserted may be formed, and a state in which it is not pulled out may be formed. The dummy wire is not limited to a through hole into which an optical fiber is inserted, and a non-energized wire having a diameter larger than that of the optical fiber is used to form a positioning hole for fitting or a positioning hole for processing, which can be used as a positioning protrusion of a plug. It can be used as a socket hole for socket or as a reference hole for positioning during the processing of the electroformed body. The reference hole for positioning during processing of the electroformed body is not limited to a circle, and may be a triangle, other polygons, an oval, a semicircle, or the like. In the case of a polygon, it can be used as a fitting by a positioning protrusion of a plug. [Example] The electroforming device 10 used in the manufacturing method of the ferrule of the present invention is basically the same as the device shown in FIG. 8, but in the present invention, there is a mixture of an electrode wire that is energized and an electrode that is not energized. The dummy wire is arranged in the electroforming liquid to manufacture a multi-core type ferrule. See Figure 3 for more details. The supporting fixture 35 is composed of an upper plate 20 and a lower plate made of an electrically insulating material. (11) (8) (8) 200405948 2 1 is formed by connecting four pillars 22 made of metal or plastic with screws. Auxiliary members 2 7 are arranged at the upper and lower positions between these upper plates 2 G and lower plates 21, and a line through which fine holes 29 are inserted in these auxiliary members 27 at three positions in the central portion thereof. Holding member 2 8. One screw 2 3 a in the center of the upper plate 20 and the plurality of screws 3 7 a around it are electrically insulated from each other, and are arranged through the upper plate 20. Among these, the lower end of the bottom surface of the upper plate 20 of the screw 23a penetrating to the center is fixed to one end 17 a of the spring 17. The upper end of the central screw 2 3 a is connected to the negative power source as a cathode 18. A lower end of the spring 17 is also fixed to the lower end of the bottom surface of the upper plate 20 of the plurality of screws 37a protruding through the periphery of the screw 23a. One screw 2 3b in the center of the lower plate 21 and the surrounding The plurality of screws 3 7 b are electrically insulated from each other, and are arranged through the lower plate 21. A clip 25 is fixed to the upper end of the top surface of the upper plate 20 of the screws 2 3 b protruding through these centers and the screws 3 7 b around them. Further, the circular holes 24 for fitting the air nozzles 16 to the lower plate 2 1 are passed through at four positions. The upper end of the aforementioned electrode wire 19 is hung on the lower end of the spring 17 in the center, while the electrode wire 19 is pulled and the spring 17 is stretched, the lower end of the electrode wire 19 is held by the central clip 25. The upper end of the dummy wire 36 is hung on the lower end of the other spring 17, and the dummy wire 36 is pulled while the spring 17 is stretched, while the lower end of the dummy wire 36 is held by other clips 25. Here, the dummy wire 36 can be suitably selected to use metal wires such as iron or its alloy, '@ or its alloy, copper or its alloy, and nylon, polyester, and ή /? -12-(9) (9) 200405948 Plastic threads such as fluorinated vinyl resin. In the case of a metal wire, an insulating film such as a fluorine coating or an oxide film is provided to make it electrically insulating and easy to pull out after electroforming. However, in order not to be affected by the electrode wire 19, the dummy wire 3 6 is more preferably an insulating material if possible. Based on this, the cathode of the present invention is characterized in that the surroundings of the electrode wire 19 that is energized are parallel to the electrode wire 19 and the dummy wire 36 is arranged. First Embodiment (Fig. 1) Fig. 1 shows a process of manufacturing the ferrules 1 1 arranged in an array of three cores. Fig. 1 (a) shows an electrode wire 19 fixed to a support jig 35 and a dummy wire 36 having a predetermined interval on both sides thereof. The electrode wires 19 and the dummy wires 36 are both the same diameter as the inserted optical fiber 3 2. Fig. 1 (b) starts electroforming with the electroforming apparatus 10, and electrode deposits 30 are gradually attached in a concentric circle around the electrode wires 19. Fig. 1 (0 is that with the growth of the electrode deposit 30, the dummy wire 36 gradually starts to be covered by the electrode deposit 30. Fig. 1 (d) is that if the electrode deposit 30 is more attached, the dummy wire 3 6 is completely covered. The growth of the electrode deposits 30 thus far is because one of the energized electrode wires 19 is one, so the electrode deposits 30 are centered on the electrode wires 19 and the electrode deposits 30 often grow into concentric circles. Figure 1 (E) It is then continued electroforming until it grows to the intended thickness, and ends with a predetermined thickness. -13- (10) 200405948 Fig. 1 (f) is known after the electroforming is finished. A square-core ferrule 11 having three through-holes 12 is formed with the electrode wire 19 and the dummy wire by square drawing, pressing, dissolving, etc. In the conventional technology, a multi-core ferrule 11 is formed. A plurality of electrode wires 19 are arranged in a desired manner, and the cross-sectional view after being fully electroformed after being electroformed will not become a true circle, and will be processed into other shapes after electroforming. Therefore, the efficiency of processing into a predetermined shape is poor, and It is also difficult. However, the multi-core type ferrule formed by the method of the present invention One energized electrode wire 19 is provided, and non-energized wire 36 is arranged around the electrode wire, so it grows into a slightly true circle. As a result, when it is used as a circle 11, it is almost unnecessary to perform external processing. In addition, since there is only one electrode wire 19 that is energized, the product 30 is not produced, and the gap 3 1 ′ obtained as a result of multi-directional growth like the conventional technique can obtain a ferrule that is also stable in strength. Since the virtual 36 is not energized, materials or processes that can be easily removed by drawing, dissolving, etc. after the electroforming are completed can be performed in advance. In the embodiment shown in FIG. 1, the placement of the electrode wires 丨 9 will be described. The case of two dummy wires 36 and three-core ferrules 11 is limited to this. For example, although two dummy wires are pulled out in FIG. 1, the electrode wire 19 is not pulled out as a two-core ferrule. An example of 11 is an example in which two or more dummy wires 3 6 are arranged on one or both sides of the wire 19, and an arrangement of three or more concentric-circle multi-core ferrules 1 1 of the electrode wire 19 is provided in the Vertically or horizontally by two rows by 36, flat by form factor, so complete circle Or process 1 1 series of dummy-shaped sleeves and minimally-produced electrodes with interposed wires, extruded on both sides, but not ί36. The example of the electrode is taken as the above example-14- (11) (11) 200405948 The second embodiment (Fig. 2) can also be combined with an appropriate combination such as an example in which optical fibers with different thicknesses are mixed. In the aforementioned first embodiment, the peripheral arrangement of the electrode wire 1 9 and the electrode wire 1 are displayed. 9 The dummy wire 3 of the same diameter 3 6 is an example of forming a multi-core ferrule 1 1, but the present invention is not limited to this. The purpose other than forming an optical fiber insertion hole, for example, for the purpose of forming a fitting hole, can also be arranged with Electrode wires 19 with different diameters. Fig. 2 (a) shows the arrangement of dummy wires 3 6 (four in this example) around the electrode wires 19. The electrode wires 19 and the dummy wires 36 are those having the same diameter as the inserted optical fiber. In this second embodiment, the positioning wire 3 8 for fitting having a diameter larger than that of the electrode wire 19 and the dummy wire 36 is symmetrically arranged on the outer periphery of the dummy wire 36 with the electrode wire 19 as the center point symmetrically. The fitting positioning wire 38 and the dummy wire 36 are made of materials that are not the same as those of the dummy wire 36. Fig. 2 (b) shows that in this state, the use of the electroforming device 10 is started, and the electrode 30 is gradually attached to the electrode wire 19 to grow into a concentric circle. Fig. 2 (c) shows that as the electrode deposit 30 adheres, the dummy wire 36 gradually starts to be covered with the electrode deposit 30. Figure 2 (d) shows that if the electrode deposit 30 is more attached, the dummy wire 36 is completely covered. The positioning positioning wire 38 also gradually began to be covered with the electrode deposit 30. • 15- (12) (12) 200405948 Figure 2 (e) shows that the positioning wire 38 for fitting is also completely covered. ‘Electroforming continues until it grows to the intended thickness, and ends at the predetermined thickness. Figure 2 (f) is the ferrule after the electroforming is completed. The energized electrode wires 19 are removed by drawing, pressing, dissolving, etc., the non-energized dummy wires 3 6, and the non-energized fitting positioning. A ferrule 11 having five through-holes 12 and a fitting hole 40 is formed from the wire 38. The fitting hole 40 formed by the above-mentioned method is used when the ferrules 11 of the optical fiber 32 are inserted as shown in FIG. 6 (b) or (c). That is, in FIG. 6 (b), the two fitting holes 40 are fitted with the ferrule 1 1a on one side as the socket, and the fitting pins 42 are partially and fixedly attached to the two fitting holes. The ferrule 1 1 b on the other side of 40 is a plug, and the two ferrules 11 a and lib can be joined at the correct positions. Furthermore, in FIG. 6 (c), the two fitting holes 40 use the ferrule 1 1a on one side as a socket, and other methods in which a fitting pin 42 is integrally provided with the housing in advance are used. The side sleeve!丨 b is a plug, which can correctly connect the two ferrules 11a, lib. By arranging such a positioning wire 38 for mating, as the multi-core structure is provided, it is possible to easily perform alignment requiring a higher accuracy of joining. Third Embodiment (FIG. 4) In the first and second embodiments described above, an example in which a cross-section obtained by the electroforming device i 〇 is a true circle is used as a ferrule Π is processed according to the product Other shapes. Therefore, in the third embodiment, the alignment wire 39 for processing with an end surface having a triangular shape is disposed on the outer periphery of the dummy wire 36 at -16- (13) (13) 200405948. Based on this, the outline processing is performed with high accuracy. . Fig. 4 (a) shows two dummy wires 36 arranged in a straight line on the left and right sides of the electrode wire 19, and a triangular positioning wire for processing is symmetrically arranged on both sides with the electrode wire 19 as the center point. 3 9. The alignment wire 39 for processing and the dummy wire 36 are made of the same material as the dummy wire 36 and the dummy wire 36 are used. Fig. 4 (b) shows that in this state, using the electroforming device 10, the electrode deposit 30 is adhered to a predetermined thickness, and the electrode wire 19 and the dummy wire 3 are removed by drawing, pressing, dissolving, etc. 6. Alignment wire 3 9 for processing Figure 4 (c) is based on the alignment notch 41 which is generated after the alignment wire 39 for processing is removed. Conventionally, it is based on the through-hole 12 into which the optical fiber 32 is inserted. Since the non-contact processing is used for the insertion of the optical fiber 32, accurate processing is difficult. However, since the alignment gap 41 is accessible, it can be used accordingly. Perform the correct processing. Examples of the processing include an example in which a cross section is processed into a rectangle. As shown in FIG. 6 (d), the ferrule 1 1 a on the side having the alignment notch 4 1 is used as the plug, and an engagement protrusion 44 is integrally provided in the housing to be fitted in advance. The ferrule 1 1 b on the other side inside the recess 4 3 is a socket, and can correctly join the two ferrules 11 a, 1 1 b ° Fourth Embodiment (Fig. 5) A second embodiment is provided in the fourth embodiment. Example of the positioning wire for fitting -17 · (14) (14) 200405948 Material 3 8 and the alignment wire 39 for processing of the third embodiment are both examples. Fig. 5 (a) shows an electrode Two dummy wires 36 are arranged on the left and right sides of the wire 19 in a straight line. On the outer side of the electrode wires 19 in the left-right direction, the electrode wires 19 are arranged symmetrically with respect to the electrode wires 19 and the dummy wires 3 as a center point. 6 is also a large positioning positioning wire 38 for fitting, and a triangular positioning wire 39 for processing is disposed symmetrically on the outer side of the electrode wire 19 in the vertical direction with the electrode wire 19 as the center point. The positioning wire 3 for fitting, the positioning wire 3 9 for processing, and the dummy wire 3 6-so as not to energize them. Figure 5 (b) shows the use of the electroforming device 10 in this state. The electrode deposits 30 are attached to a predetermined thickness, and the electrode wires 19 and the dummy wires 3 6 are removed by drawing, pressing, dissolving, and the like. , Positioning wire for fitting 3 8, Positioning wire for processing 39. Fig. 5 (c) is the external shape processing based on the processing holes 41, which are used to generate the alignment wires 39 for processing by drawing, pressing, or the like. As shown in FIG. 6 (b) after the outer shape processing, the two fitting holes 40 of the ferrule 1 1a on one side are fixed by fitting and fixing the fitting pin in a slightly protruding state as a sleeve on the other side. The pins used for fitting when the rings 1 1 b are engaged can be easily aligned accurately. In addition, in the fourth embodiment, for example, as shown in Fig. 6 (a), the electrode wires 19 may be left without removing them. Electrode wire 1 9, Dummy wire 3 6, Positioning wire for fitting 3 8, Alignment wire for processing 3 9 etc. The material or surface processing is determined in advance by considering the ease of drawing or compression, if -18- ( 15) (15) 200405948 As a premise that the electrode wire 19 is not removed, there is no need to consider removal methods such as drawing ease and compression ease, and the range of materials that can be used as the electrode wire 19 increases. In the foregoing fourth and fifth embodiments, one electrode wire 19 is provided, and a dummy wire 36 is arranged around the periphery to form a multi-core type ferrule ii. As shown in FIG. 4 (c) and FIG. 5 ( c) When the through-hole 12 is formed only in a certain direction, and the shape of the ferrule 11 after processing is flat, there is no gap 31 as shown in Fig. 11 (b) and (0), so It is suitable to combine the plurality of electrode wires 19 and the dummy wires 3 6, the positioning wires 3 for fitting, 8 and the positioning wires 3 9 for processing, and it is also possible to manufacture the ferrule 11. In the foregoing embodiment, although the The positioning wire 38 for the fitting is a round end face, and the positioning wire 39 for the processing is a triangle end face, but it is not limited to this. If the functions are completed, the shape is like a quadrangle, an oval, a star, etc. Yes, it can be appropriately selected. In the foregoing embodiment, the electrode wire 19, the dummy wire 3 6, the fitting positioning wire 3 8, and the processing alignment wire 3 9 are used as the support jig as shown in FIG. 3 3 5 The structure fixed to the electroforming device 10, but the positional relationship is not affected. However, it can be fixed by a method that maintains the parallelism completely. [Effect of the Invention] If the invention according to the first patent application scope is applied, one or more dummy wires are arranged around the electrode wire on the cathode side. Electroforming, which embeds the aforementioned electrode wire and dummy wire on the cathode side to form an electroformed body. Narcissism-19- (16) (16) 200405948 This formed electroformed body removes at least the dummy wire to form a through-hole for optical fiber insertion Therefore, the electrode deposit grows into a concentric circle with the electrode wire as the center. At this time, at least one dummy wire is arranged around the wire, so all the wires are covered by the electrode deposit, and a true circular shape can be simply obtained. The ferrule of the core type. Moreover, in the case where a single electrode wire is energized, a gap that results from the multi-directional growth of electrode deposits as in the conventional technique is not generated, and a ferrule that is stable in strength can be obtained. In addition, since the dummy wire is not energized, it can be easily removed in advance by removing, pressing, dissolving, etc. after the electroforming is completed. Materials or treatments. If one or more dummy wires are arranged around the electrode wire on the cathode side according to the invention in the scope of patent application No. 2, one or more positioning wires are arranged on the periphery of the dummy wire for electroforming. Forming an electric iff body by burying the aforementioned electrode wire, dummy wire and positioning wire integrally on the cathode side. The electroformed body formed from this removes at least the dummy wire among the electrode wire and the dummy wire to form a through-hole for optical fiber insertion, and The positioning wire is removed, and positioning holes are formed when mating with other ferrules, so that the correct alignment can be performed when connecting the same multi-core type ferrule face to face. Especially by providing the positioning wire for mating As it becomes a multi-core structure, it is easy to perform alignment that requires a higher accuracy of joining. If the invention according to item 3 of the scope of patent application is used, the positioning hole can be used as a positioning hole of a socket when inserting a pin of another ferrule only by removing the positioning wire. If the invention according to item 4 of the scope of patent application is applied, only by removing the wire for fixing -20- (17) (17) 200405948, and fixedly installing the latch, it can be used as a plug for inserting into the positioning hole fitted in other ferrules. While posing. If the invention according to item 5 of the scope of patent application is applied, one to a plurality of dummy wires are arranged around the electrode wire on the cathode side, and one or more alignment wires are further arranged around the dummy wire to perform electroforming to embed the foregoing cathode integrally. The electrode wire, the dummy wire, and the alignment wire on the side form an electroformed body. The formed electroformed body removes at least the dummy wire of the electrode wire and the dummy wire to form a through-hole for optical fiber insertion, and removes The alignment wires form alignment holes during outline processing. Therefore, the machining holes can be used as a reference to perform correct outline processing and other processing. As a result, the alignment of optical fiber splices can be performed accurately. If the invention according to item 6 of the scope of patent application is applied, since the wire removed from the electroformed body is subjected to insulation treatment, the dummy wire is easily removed from the electroformed body by drawing or pressing, and the diameter of the hole is also correct. If the invention according to item 7 of the scope of patent application is applied, since the wire removed from the electroformed body is made of an electrically insulating material, no insulation treatment, oxide film, fluorine coating treatment, etc. for preventing electrical contact with the electrode wire is performed. , Can produce multi-core sleeves. [Brief description of the drawings] FIG. 1 is a first embodiment showing a method of manufacturing a ferrule according to the present invention, '(a) is a sectional view showing the arrangement of electrode wires and dummy wires fixed in an electroforming bath' ( b) ~ (e) are cross-sectional views showing the growth of electrode deposits. (f) are cross-sectional views showing the completed three-core ferrule. -21-(18) (18) 200405948 Figure 2 is a display According to the second embodiment of the manufacturing method of the ferrule according to the present invention, (a) A cross-sectional view of the arrangement of the electrode wire, the dummy wire, and the positioning positioning wire for fitting in the recording bath, (b) ~ (E) is a cross-sectional view showing a state where the electrode deposit is grown, and (f) is a cross-sectional view showing a completed five-core type ferrule. Fig. 3 is an explanatory view showing an electroforming apparatus used in a method of manufacturing a ferrule according to the present invention. FIG. 4 is a cross-sectional view showing a third embodiment of a method for manufacturing a ferrule according to the present invention, and (a) is a view showing the arrangement of an electrode wire, a dummy wire, and an alignment wire for processing, which are fixed in an electroforming bath, ( b) is a cross-sectional view showing the appearance of the electrode deposit after it is grown, (0 is a cross-sectional view showing a five-core type ferrule whose outer shape has been processed. FIG. 5 is a first view showing a ferrule manufacturing method according to the present invention. The fourth embodiment (a) is a cross-sectional view showing the arrangement of electrode wires, dummy wires, positioning wires for fitting, and positioning wires for processing fixed in an electroforming bath. (M is a view showing the state of electrode deposits after growth. (C) is a cross-sectional view showing a five-core type ferrule whose outer shape has been completed. Fig. 6 (a) is a cross-sectional view showing a four-core type ferrule without removing the electrode wire residual structure, (B) is a cross-sectional view showing an example in which a fitting positioning hole is used as a socket after the fitting positioning wire is removed and a fitting pin is fixedly installed as a plug after the fitting positioning wire is removed, (c) Yes display Example where the positioning hole for the fitting is used as the socket after removing the positioning wire for the fitting, and the case where the fitting pin and the housing are integrally provided as the plug are provided in advance. 22- (19) 200405948 lack and long light (a) other shape Sectional view (d) is a perspective view showing an example in which an alignment port after the processing alignment wire is removed is used as a fitting recess as a socket, and an engagement projection shell is integrally provided in advance as a plug. FIG. 7 is a ferrule showing a core type, (a) is a cross-sectional view cut in a length direction perpendicular to the core-type ferrule, and is a cross-sectional view cut in a direction perpendicular to the degree, (b) is A cross-sectional view in the longitudinal direction showing a state where the ferrule inserted into the fiber is joined by the entire row portion 33. Fig. 8 is an explanatory diagram of a conventional electroforming apparatus. Fig. 9 is a support jig in a conventional electroforming apparatus. The figure is a front view, and (b) is a bottom view. A side view of an example of a supporting jig in a conventional electroforming apparatus of the 10th Weiwei. FIG. 11 is a view showing the manufacturing using a conventional electroforming apparatus. '(A) is a sectional view of the two-core type' (a) is a sectional view of the three-core type Figure (C) shows the cross section of the four-core type. Symbol Description 1 0: Electroforming device 1 1: Ferrule 1 2: Through hole 1 3: Electroforming liquid 1 4: Anode 1 5: Support fixture 16: Air nozzle
-23- (20) (20)200405948 1 7 :彈簧 1 8 :陰極 1 9 :電極線材 2 0 :上板 2 1 :下板 2 2 :支柱 2 3 :螺絲 24:圓孔 2 5 :夾子 2 6 :電鐘浴 2 7 :輔助構件 28:線保持構件 2 9 :細孔 3 〇 :電極沉積物 3 1 :間隙 3 2 :光纖 3 3 :整列部 34:基座 35:支持夾具 3 6 ·.虛設線材 3 7 :螺絲 3 8 :定位線材 3 9 :對位線材 40:定位孔 -24- (21) (21)200405948 4 1 :對位缺口 42:嵌合銷 4 3 :嵌合凹部 44:卡合突條 4 5 :焊錫-23- (20) (20) 200405948 1 7: Spring 1 8: Cathode 19: Electrode wire 2 0: Upper plate 2 1: Lower plate 2 2: Post 2 3: Screw 24: Round hole 2 5: Clip 2 6: Electric bell bath 2 7: Auxiliary member 28: Wire holding member 2 9: Fine hole 3 0: Electrode deposit 3 1: Gap 3 2: Optical fiber 3 3: Alignment section 34: Base 35: Support fixture 3 6 Dummy wire 3 7: Screw 3 8: Positioning wire 3 9: Alignment wire 40: Positioning hole -24- (21) (21) 200405948 4 1: Alignment notch 42: Fitting pin 4 3: Fitting recess 44 : Engaging protrusion 4 5: Solder
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