200526837 九、發明說明： 【發明所屬之技術領域】 將針架3支#成能與插穿支擇於該縫 動主軸（圖略）連動而上下往復運動。 〃 本發明’係主要有關適用於多針式鏈狀拼縫機之 線送線裝置之縫紉機。詳而言之，传一 十 具有針線送線裝置之縫幼機：針¥ 於^、備下列構件的 τ木於縫紉機臂部前端 透過曲柄機構被支樓成能與插穿切於㈣ ; 動主轴連動而上下往復運動;針，安裝於該針架之下内端:驅 =用零件’包含線鉤、布料進給機構，且收納於縫：機 之前端部；線張力，’用以調整供給針及線 : 及線鉤線的張力；及針線送線裝置，用以隨著兮 、、友 ::復運動，將針線送出’使其經過線張力器：固 通路，再供給至針。 、寸線 【先前技術】 此種習知之具有針線送線裝置之縫匆機中，、 常維持良好的縫製狀態的針線送出控制機構而 ί之特開平卜1 55488號公報所揭示，於縫勿機臂部之^ 置有上下往復搖動之活動針線送線構件並使針： 上柒部比縫紉機臂部前端部之上壁部更向 木之 出之針架上端部分固定有與針：叙於該突 通路。 乂下在後運動之針線 【發明内容】 之縫紉機中，為了固定 上述般習知之具有針線送線裝置 200526837 針線通路’於縫紹機臂部前端部之上壁部分形成有貫通 孔’來使針架之上端部分比該上壁部分更向上突出，因此， 從貫通孔會漏油或使塵埃侵入縫幼機臂部内，此外，向上 突出之針線通路會高速上下往復運動，故從作業者等之安 全性來看是不佳的。再者，針架之長度長且固定有針線通 路導致針架之重量變大，縫製速度之高速化有其極限。 本發明係有鑑於上述問題而開發出的縫幼機，其目的在 於提供-種具有針線送線裝置之縫匆機，其能省去針線通 路之使用，將縫幼機臂部大致密閉，防正漏油、塵埃之侵 二並且藉由針架長度之縮短及輕量化’能容易實現縫製 速度之高速化。 為了達成上述目的，本發明之具有針線送線裝置之縫幼 係具有：針架’於縫幼機臂部的前端部透過曲柄機構 被支撐成能與插穿支擇於縫匆機臂部内的驅動主軸連動而 上下往復運動；針，安裝於該針架之下端部；縫製用零件， 包含線鉤、布料進、给機構，且收納於縫初機床部之前端部； 線張力$ ’用以調整供給針及線鉤之針線及線鉤線的張 力’及針線送線裝置，用以隨著該針架之上下往復運動， 將針線送出，使其經過線張力器及固定針線通路，再卜 針’其㈣:在於：該針架之上下往復運動範圍，係設定成， 在針架上昇至上死點之狀態’能使針架之上端部不向上突 出於縫紉機臂部前端部之上壁部分。 依據具有上述特徵的本”，^於省去用來針線送線之 針線通路之使用，故針架之長度不須設定成使其上端部向 7 200526837 上突出縫紉機臂部前端部之上壁部分，而能謀求針架長度 之縮短及輕量化，容易實現縫製速度之高速化。此外，缝 紉機臂部前端部之上壁部分雖一般形成有針架裝入孔，不 過，該孔在通常之縫製時完全不使用，故例如能事先用蓋 子予以封閉，來將縫紉機臂部大致密閉，因此，能防止平 常縫製作業時發生之漏油，亦能防止塵埃侵入縫紉機臂部 内。 【實施方式】 圖1是適用本發明的3針式鏈狀拼縫機的全體前視圖， 圖2是顯示針線送線裝置主要部分的立體圖，圖3是圖2 的要部的放大前視圖。於此各圖中，1是縫紉機臂部，2是 縫紉機床部，於縫紉機臂部1的左端部，將針架3支撐成 能與插穿支撐於該縫紉機臂部1内的驅動主軸（圖略）連動 而上下往復運動，並且與該針架3鄰接設有壓布機構（由於 周知，故省略詳細說明）。 於該針架3下端部透過針夾4安裝三支針5，並且該針 架3的上下往復運動範圍設定為即使該針架3在上昇運動 至上死點之狀態下，其上端部仍不會向上突出於縫紉機臂 部1左端部的上壁部分的範圍。又，於縫紉機床部2左端 部，收納針板及線鉤、布料進給機構等縫製用零件（由於周 知，故省略詳細說明）。 於上述縫紉機臂部1的左右大致中間位置的前面部設 有作為針線送線裝置之活動針線送線構件8，其藉著與上述 驅動主軸連動的針線送線軸6的正反驅動旋轉，透過針線 8 200526837 达線台7’與針架3的上τ往復運動同步，以該針線送線轴 6為支點上下（箭號u_d方向）往復搖動運動。於此活動針線 达線構件8右側的縫匆機臂部1的前面部配置有與針線供 油裝置12安裝成一體之固定針線通路13、及三個可變針線 通路17。該針線供油裝置】2,係從4個線張力器（可對3 條針線9及1條線鉤線10賦予送出摩擦阻力，以個別調整 線張力）U送出並引導的4條線中之三條針線9以聚集狀態 亚於該等針線9塗佈潤滑油，該等三個可變針線通 路1係將通過此固定針線通路13後的三條針線9以能個 通路安裝台⑷固定連設於固定針線通 路⑻上分別透過長孔15及螺絲“固 iu-di方向）變更位置自如。 卜、削號 大：二述活動針線送線構件8的前(左)端及長邊方向的 大致中間部，分別形成有排在同一高度之3個第】針線送 線孔8A及3個第2針線送線孔8B，以將 ， 出並通過固定針線通路、益1〗达 …條針線9,通過固定在縫 =置的針線送線導…所形成的 3支針5進仃下降引導；且於此第i針 針線送線孔8B之間的活 邻 -第2 上下位置錯開之3個第3針線送二成有 連設成-體，該第3針線送線孔8C ’’：引導部8a 送線孔8A，間延伸的針線部“在其二== 大致對稱的v字形之狀態下送出並引導。 成左右 200526837 又’於上述活動針料線構件8前端 “與針線送線導…針線一間延伸的針+線= =中㈣置設有困2所示之針線承座19。此針線。= 具有3個線支律部19a，該等3個線支樓部19a，件僅在上 ^活動針線送線構件8向下(d方向)搖動時，將位於第】針 1达線1\8A與第3針線送線孔8C之間的3條針線部分9b 等以向上彎曲之姿勢播住。又，此針線承座19, 二：針：达線導件18上端部分係透過長孔2。 線支撐-二成右: 紗圈的-幻是最高，中間、左側依序降低。 針線 在使用具備上述構成的針線送線裝置的3針式 縫機來縫製—般的布料的情形下，按照縫製布料的厚产、 針線9的粗細、伸縮性等預先沿上予又 可變針線通路17的位置，並以使3物=^^ =式調整針線供給路徑的長度，亦即，調整成針：適5 上汁至上死點時的針線供給路#長度與針架3下降至; 點時的針線供給路徑長度Α致相#。 將線張力器11所產生的送出摩 ， ::式調整後才送出並引導的-針線= 路^可變針線通路〜活動針線送線構 2針線通 送線孔8Β—第3針線送線孔8C〜第 帛2針線 送線導件18的針線孔18a的順序、、’ "^孔8Α〜針線 被下降引導。 …並勿別朝3支針5 200526837 右於此狀態下，針架3及針5被上下往復驅動運動，活 動針線送線構件8即與其同步，以針線送線軸6為中心， 下（G號u d方向）往復搖動運動，邊良好地維持線張力 斤產生的線張力及縫製狀態，邊以不施加鬆弛或過度 張力於3條針線9之方式適當控制針線9的送出量，不拘 縫製布料的厚度均可進行既定的縫製。 另一方面，在縫製如微細纖維布般由組織非常柔軟且富 有伸f生的材質所構成之布料之情形下，通過固定針線通 路13及可變針線通路17供給的針線9，依序通過形成於活 及第l針線送線孔8A，經針線送線導件18的針線孔 被下降引導，因此，保持於該活動針線送線 的全長為長，並且，此長針線9部分的中途 1 3針、㈣線孔^致v字形 張力器11賦予斜綠q夕、、，山# 弓嘗故將線 發生縫製不商达出摩擦阻力保持於使線張力不會 年3及W 、 且於活動針線送線構件δ與針 圖卞：針5的下降移動連動’而自圖5所示之上昇 圖6所不之下降位置搖動運動 至活)自八針線通路17 尺k綠構件8刖端的第1針200526837 IX. Description of the invention: [Technical field to which the invention belongs] Three needles # of the needle holder can be inserted into the sewing spindle (illustration omitted) to reciprocate up and down. 〃 The present invention is mainly related to a sewing machine suitable for a thread feeding device of a multi-needle chain stitch sewing machine. In detail, pass ten sewing machines with needle and thread feeding device: needle ¥ ^, τ wood with the following components at the front end of the arm of the sewing machine is supported by the building through the crank mechanism, and can be cut and inserted at ㈣; The main shaft interlocks and reciprocates up and down; the needle is mounted on the lower end of the needle holder: drive = with parts 'contains thread hook and fabric feeding mechanism, and is stored in the seam: the front end of the machine; thread tension,' for adjustment Supply the needle and thread: and the tension of the thread of the hook; and the thread-feeding device for threading the needle with the movement of Xi, You :: to return to the needle through the thread tensioner: the solid path. [In the prior art] In this conventional sewing machine with a needle and thread feeding device, a needle and thread delivery control mechanism that normally maintains a good sewing state is disclosed in JP-A No. 1 55488. The arm part is provided with a movable needle thread feeding member that reciprocates up and down and makes the needle: the upper part of the needle frame is fixed to the upper part of the needle frame more than the upper wall part of the front end part of the sewing machine arm. The sudden pathway. His Majesty Needle Thread in Backward Movement [Summary of the Invention] In the sewing machine, in order to fix the above-mentioned conventional needle thread feeding device 200526837, the needle thread path is formed with a through hole in the upper wall portion of the front end of the sewing machine arm portion to make the needle The upper end portion of the frame projects more upward than the upper wall portion. Therefore, oil leaks from the through holes or dust enters the arm of the sewing machine. In addition, the needle thread path protruding upward will reciprocate up and down at high speed. Security is not good. Furthermore, the length of the needle holder and the fixing of the needle thread path cause the weight of the needle holder to increase, and there is a limit to the high speed of the sewing speed. The present invention is a sewing machine developed in view of the above problems, and the purpose thereof is to provide a sewing machine with a needle thread feeding device, which can omit the use of a needle thread passage, and substantially close the arms of the sewing machine to prevent Positive oil leakage and dust invasion, and the reduction of the length and weight of the needle holder can easily increase the sewing speed. In order to achieve the above object, the sewing machine with a needle thread feeding device according to the present invention has: a needle holder is supported at the front end of the sewing machine arm by a crank mechanism so that it can be inserted and inserted into the sewing machine arm. The driving spindle is reciprocated up and down; the needle is installed at the lower end of the needle frame; the sewing parts, including the thread hook, the fabric feeding and feeding mechanism, are stored in the front end of the machine section at the beginning of the sewing; Adjust the tension of the needle thread and the hook hook and the thread hook thread 'and the needle thread feeding device, which is used to reciprocate the needle holder up and down to send the needle thread through the thread tensioner and the fixed needle thread path. Needle 'its ㈣: lies in the range of reciprocating motion of the needle frame above and below, which is set in a state where the needle frame rises to the top dead center' so that the upper end portion of the needle frame does not protrude upward from the upper wall portion of the front end portion of the arm portion of the sewing machine . According to the book with the above characteristics ", the use of the needle thread path for needle thread feeding is omitted, so the length of the needle holder does not need to be set so that its upper end portion protrudes from the upper wall portion of the front end portion of the sewing machine arm portion. In order to reduce the length and weight of the needle holder, it is easy to achieve high-speed sewing. In addition, although the needle holder mounting hole is generally formed in the upper wall portion of the front end of the sewing machine arm, the hole is usually sewn. It is not used at all, so for example, it can be closed with a lid in advance to seal the arm of the sewing machine substantially, so it can prevent oil leakage during ordinary sewing operations and prevent dust from entering the sewing machine arm. [Embodiment] Figure 1 It is a front view of the entire 3-needle chain stitcher to which the present invention is applied, FIG. 2 is a perspective view showing a main part of the needle thread feeding device, and FIG. 3 is an enlarged front view of the main part of FIG. 2. In each of these figures, 1 is a sewing machine arm part, 2 is a sewing machine part, and the needle holder 3 is supported at the left end of the sewing machine arm part 1 so as to be able to interlock with a driving spindle (illustration omitted) inserted and supported in the sewing machine arm part 1. And the needle holder 3 is reciprocated up and down, and a cloth pressing mechanism is provided adjacent to the needle holder 3 (because it is well known, detailed description is omitted). Three needles 5 are installed at the lower end of the needle holder 3 through the needle clamp 4, and the needle holder 3 The vertical reciprocating range is set to a range in which the upper end portion of the needle holder 3 does not protrude upward from the upper wall portion of the left end portion of the sewing machine arm portion 1 even when the needle holder 3 moves upward to the top dead center. The left end part stores sewing parts such as the needle plate, the thread hook, and the cloth feeding mechanism (a detailed description is omitted because it is well known.) The front part of the sewing machine arm part 1 at the substantially right and left positions is provided with a needle thread feeding device The movable needle thread feeding member 8 is rotated by the forward and reverse driving of the needle thread feeding shaft 6 linked with the above-mentioned driving spindle. Through the needle thread 8 200526837, the thread table 7 'is synchronized with the upper τ reciprocating movement of the needle holder 3, and the needle thread is fed by the needle thread. The spool 6 is a reciprocating rocking movement of the fulcrum up and down (in the direction of the arrow u_d). Here, the front part of the sewing machine arm 1 on the right side of the movable needle thread reaching member 8 is configured to be integrated with the needle thread oil supply device 12 Fixed needle thread path 13, and three variable needle thread paths 17. The needle thread oil supply device] 2, is provided by 4 thread tensioners (can provide friction resistance to 3 needle threads 9 and 1 thread hook thread 10, individually Adjust the thread tension) Three of the four threads 9 sent out and guided by the U are coated with lubricating oil. The three variable needle thread paths 1 pass through the fixed needle thread path 13. The three needle threads 9 can be fixedly connected to the fixed needle thread channel 以 with a channel mounting table ⑷, and can be freely changed in position through the long hole 15 and the screw “fixing the iu-di direction”. Bu, large size: Second, the front (left) end of the movable needlework thread feeding member 8 and the substantially middle portion in the long direction are formed with three first and third thread rows at the same height, respectively. 2 needle thread feeding holes 8B to pass through the fixed needle thread path, benefit 1 to ... needle threads 9, 3 needles 5 formed by the needle thread feeding guide fixed at the seam = guide into the lowering guide; And in this live neighbour between the i-th needle thread feeding hole 8B-the 3 third needle threads that are staggered from the second up and down positions are sent to 20% with a continuous body-the third needle thread feeding hole 8C '': guide Part 8a thread-feeding hole 8A, the needle thread part extending in the middle is "sent out and guided in the state of the second == roughly symmetrical V-shape. It is left and right 200526837 and" on the front end of the movable needle thread member 8 "and the needle-thread thread guide ... a needle + thread extended between needles and threads = = a needle and thread socket 19 shown in the middle 2 is provided. This needlework. = With 3 thread branch sections 19a, these 3 thread branch sections 19a, only when the upper thread moving member 8 is moved downward (direction d), it will be located at the first needle 1 up to the thread 1 \ The three needlework portions 9b and the like between 8A and the third needlework thread feeding hole 8C are broadcast in a bent upward posture. In addition, this needle and thread socket 19, 2: Needle: The upper end of the thread guide 18 is passed through the long hole 2. Line support-Ercheng right: The yarn loop-magic is the highest, and the middle and left are lowered in order. In the case of sewing general fabrics using a 3-needle sewing machine equipped with the above-mentioned needle and thread feeding device, the needle thread can be changed in advance according to the thickness of the sewing fabric, the thickness of the needle thread 9 and the stretchability. The position of passage 17 and the length of the needle thread supply path is adjusted in such a way that 3 things = ^^ = type, that is, adjusted into needles: the length of the needle thread supply path # 5 when the juice reaches the top dead point and the needle holder 3 is lowered to; Needle thread supply path length Α 相 相 # at the time of the dot. Needle thread produced by the thread tensioner 11 is sent and guided after the ::-adjustment-Needle thread = variable ^ variable needle thread path ~ movable needle thread feeding structure 2 needle thread feeding thread hole 8B-3 needle thread feeding hole From 8C to 2nd, the order of the needle thread holes 18a of the second needle thread feed guide 18, and the holes 8A to 8 are guided downward. … Do n’t point 3 needles 5 200526837 Right in this state, the needle holder 3 and needle 5 are driven back and forth to move up and down, and the movable needle thread feeding member 8 is synchronized with it, centering on the needle thread feeding shaft 6 (down G ud direction) reciprocating shaking motion, while maintaining the thread tension and sewing state produced by the thread tension caterpillar, while properly controlling the feeding amount of the needle thread 9 in such a way that no slack or excessive tension is applied to the three needle threads 9, the thickness of the sewing fabric is not restricted Both can be used for the intended sewing. On the other hand, in the case of sewing a fabric made of a material that is very soft and rich in stretch like a microfibre cloth, the needle thread 9 supplied through the fixed needle thread passage 13 and the variable needle thread passage 17 are sequentially formed. In the case of the first needle thread feeding hole 8A, the needle thread hole of the needle feeding thread guide 18 is lowered and guided. Therefore, the total length of the movable needle thread feeding thread is kept long, and the middle part of the long needle thread 9 is 1 3 Needle, thread hole 致 cause v-shaped tensioner 11 to give oblique green q ,,,, mountain # bow taste so the thread will not sew when it reaches the friction resistance to keep the thread tension will not be 3 and W, and active Needlework thread feeding member δ and needle figure 卞: The movement of needle 5 descends and moves from the lowered position shown in Fig. 5 to the position shown in Fig. 6 and shakes to the live position.) 1 stitch
是越下方越大，（”自第…線达線孔8A的距離L 此 第2針線送線孔8B朝向第3斜飧$ 線孔8C的針線部分9 助第3針線运 賦予之逆屮麼# 勢、漸向下，抵抗線張力器u '予之以摩擦阻力的針線送出力f越下方 在活動針線送線構件8搖 （一） 置的時點，第3針^ 下降位置的稍上方位 第3針線达線孔3C與第】針線送線孔^間的 200526837 〜°卩刀9b破針線承座1 9的線支撐部1 9a擋住，自此狀 恶起’活動針線送線構件8搖動至圖6的下降位置，隨此 搖動，被播住的針線部分9b改變成向上彎曲之姿勢，抵抗 張力1" 11所產生送出摩擦阻力的針線送出力f進-步增 強因此，針線送出量是越往下方越大。 由於活動針線送線構件8所產生的針線g送出量是越往 有#ΪΓ ’故即使以如微細纖維布般由組織非常柔軟且富 有伸、％性的材質戶斤減_ 士、 女 貫穿心4 y 製對象時’仍能使針5 ."1達下死點時的針線部分、及針5自下死點貫* 布料向上界愛上1«曰+ r夕匕點貝牙 的 ”\什時的針線部分不極度端緊，而具有些許 利脫離爪，並且能消除…广針板的爪上的紗圈順 形隆起等縫製品質之降低布料的縫製處呈棋 自上方普& *〆k又束緊，係起因於在針5 起因於針5自下^針線將貫穿處的布料部分向下推擠，或 脫離處之布料提起脫離布料時針線及纏在其上的線釣線將 又，上述活動針線送線構件8前端 與針線送線導件18 十線送線孔 路徑中途位置卜沾私& 、 i8a之間延伸的針線供給 圖4所亍开m/ 19的3個線支標部…，係如 中間、左側依序降低的段差，故即#=取早之側）最南且 下方的cj你私 吏線鉤進入形成於布料 方的3條針線紗圈的時點是越 活動針線送線構件8到達下 之、·/圈越晚，仍可將 量保持大致均等，故縫製 維布^條針線9的鬆他 4、，，田纖维布等般柔軟組織布料 12 200526837 時，能確實防止縫製處呈拱形隊如μ ❿隆起等縫製品質之降低。 又，上述實施形態中，雖ρ 4 ϋ 巳就没有針線承座19之情形 加以說明，不過，如圖7及圖β « 及圆8所示，即使是未設有針線 承座1 9的3針式鏈狀拼縫機，仿 ^仍旎蟢由前述（一）、（二）的 作用使得活動針線送線構件8抽& 表傅什8越向下搖動，針線送出量就 越大，防止縫製如微細纖維布等般柔軟組織布料時的 品質之降低。 & 且，上述實施形態中已就適用於3支針等多針式鍵狀拼 縫機加以說明，不過，當然亦可適用於多線鏈狀針法縫劫 機.。 又’較佳地’將活動針線送線構件8上具有第“ 線孔8C的針線引導部8a，如圖3的箭號.Μ所示構成， 能相對於活動針料線構件8沿上下方向變更位置而固 定。於此情形’藉由針線引導部^的上下位置變更 下調節第3針線送線孔8C的位置’進一步擴大隨著 :送線構件的上下往復搖動運動所產生的送出量的控制範 【圖式簡單說明】 圖1 f適用本發明的3針式鏈狀拼縫機的全體前視圖。 圖2是顯不忒3針式鏈狀拼縫機的針線送 分的構成的立體圖。 圖3是圖2的要部的放大前視圖。 圖4是針線承座的要部的放大左側視圖。 圖5是活動針線送線構件在上昇位置（上死點）時之該3 13 200526837 針式鏈狀拼縫機之前視圖。 圖6是活動針線送線構件搖動至下降位置（下死點）時 之该3針式鏈狀拼縫機之前視圖。 圖7是無針線承座情形的活動針線送線構件在上昇位 置（上死點）時之該3針式鏈狀拼縫機之前視圖。 圖8是無針線承座情形的活動針線送線構件搖動至下 降位置（下死點）時之該3針式鏈狀拼縫機之前視圖。 【主要元件符號說明】 1 縫紉機臂部 1A 上壁部分 2 縫匆機床部 3 針架 4 針夾 5 針 6 針線送線軸 7 針線送線台 8 活動針線送線構件 8a 針線引導部 8A 第1針線送線孔 8B 第2針線送線孔 8C 第3針線送線孔 9 針線 9a 針線部分 9b 針線部分 14 200526837 10 線鉤線 11 線張力器 12 針線供油裝置 13 固定針線通路 14 線通路安裝台 15 長孔 16 螺絲 17 可變針線通路 18 針線導件 18a 針線孔 19 針線承座 19a 線支撐部 20 長孔 21 螺絲 15Is the lower the bigger, ("The distance L from the first thread to the thread hole 8A. The second needle thread feeding hole 8B is facing the third oblique line. The needle thread part 9 of the thread hole 8C helps the reverse of the third needle thread operation." # The potential, gradually downward, resist the thread tensioner u 'Give the needle thread delivery force f with frictional resistance, the lower the lower position of the third needle ^ when the movable needle thread delivery member 8 is moved (a) at a lower position 200526837 between the third needle thread reaching hole 3C and the needle thread feeding hole ^ 200526837 ~ ° trowel 9b broken needle thread holder 19, the thread support portion 19a is blocked, and since then, the movable needle thread feeding member 8 shakes 6 to the lowered position of FIG. 6, with this shaking, the broadcasted needlework portion 9b is changed into an upward bending posture, and the needlework delivery force f of the needlework friction resistance generated by the tension 1 " 11 is increased in steps. Therefore, the needlework delivery amount is The lower it is, the larger it is. Since the amount of needle g that is produced by the movable needle thread feeding member 8 is more # ΪΓ ', even if it is made of microfiber cloth, it is made of a very soft, stretchy, high-performing material. _ When soldiers and women run through the heart, they can still make the needle 5 when they reach the target. The needlework part at the time of the needle, and the needle 5 from the bottom dead point through the top * The cloth fell in love with 1 «Yue + r 匕 点 贝", and the needlework part was not extremely tight, but it had some benefits to escape from the claw, And it can eliminate ... The stitches on the wide needle board's claws are raised in a straight line and the sewing quality is lowered. The sewing position of the fabric is from the top. * 普 k is tightened again, which is caused by needle 5 and needle 5 The lower needle thread pushes the cloth part at the penetration point downwards, or the cloth at the disengagement point lifts the needle thread and the line fishing line entangled with it when the cloth is detached. The front end of the movable needle thread feeding member 8 and the needle thread feeding guide 18 Ten-line thread-feeding hole midway position Bu Zanxi & i8a The needle thread extending between the three lines supporting the m / 19 line shown in Figure 4 ... is the stepwise decrease in the middle and left side, Therefore, # = Take the early side) The southernmost and lower cj your personal thread hook enters the 3 needlework yarn loops formed on the cloth side. The more you move the needlework thread-feeding member 8 to the bottom, the later The amount can still be kept approximately the same, so weaving velvet ^ strips of needle thread 9 and loose fiber 4, etc. When soft tissue cloth 12200526837, can indeed prevent sewing team at the arched lower as the sewing quality of μ ❿ uplift and so on. In the above-mentioned embodiment, although ρ 4 ϋ 巳 will be described without the needle and thread socket 19, as shown in FIGS. 7 and β «and circle 8, even if the needle and thread socket 19 is not provided Needle-type chain stitching machine, imitating ^ still the above-mentioned action (a), (b) make the movable needle thread feeding member 8 pump & table Fu Shi 8 the lower the swing, the greater the amount of needle thread feeding, Prevents deterioration in quality when sewing soft tissue cloth such as microfiber cloth. & In the above-mentioned embodiment, the multi-needle key stitch sewing machine applicable to three needles and the like has been described. However, it is also applicable to the multi-thread chain stitch sewing machine. The "preferably" needle thread guide 8a having the "thread hole 8C" on the movable needle thread feeding member 8 is configured as shown by arrow .M in FIG. 3, and can be vertically moved relative to the movable needle thread member 8 Change the position and fix it. In this situation, 'adjust the position of the third needle thread feed hole 8C by changing the upper and lower positions of the needle guide unit ^' to further expand the following: Control mode [Schematic description] Fig. 1 f The whole front view of the 3-needle chain stitcher to which the present invention is applied. Fig. 2 is a perspective view showing the structure of the needle thread feeding of the 3-needle chain stitcher. Figure 3 is an enlarged front view of the main part of Figure 2. Figure 4 is an enlarged left side view of the main part of the needlework socket. Figure 5 is the 3 13 200526837 when the movable needlework thread feeding member is in the raised position (top dead center). Front view of the needle chain stitcher. Figure 6 is a front view of the 3-needle chain stitcher when the movable needle thread feeding member is shaken to the lowered position (lower dead point). Figure 7 is the case without a needle thread seat When the movable needle thread feeding member is in the ascending position (top dead center), the 3 Front view of the chain stitch machine. Figure 8 is the front view of the 3-needle chain stitch machine when the movable needle thread feeding member is moved to the lowered position (lower dead point) without a needle seat. Description] 1 Arm part of sewing machine 1A Upper part 2 Sewing machine part 3 Needle holder 4 Needle clamp 5 Needle 6 Needle thread feeding shaft 7 Needle thread feeding table 8 Moving needle thread feeding member 8a Needle thread guide 8A First needle thread feeding hole 8B 2C thread feeding hole 8C 3C thread feeding hole 9 Cutter 9a Cushion 9b Cushion 14 14 200526837 10 Hook thread 11 Thread tensioner 12 Cylinder oil supply device 13 Fixing the needle thread path 14 Thread path mounting table 15 Long hole 16 Screw 17 Variable needle channel 18 Needle guide 18a Needle thread hole 19 Needle socket 19a Thread support 20 Long hole 21 Screw 15