1283275 玖、發明說明： 【發明所屬之技術領域】 本叙明，係主要有關適用於多針式鏈狀拼縫機 針線送線裝置之縫幼機。尤其，係-種具備下列構件^具 =二：線裝置之縫幼機：針架，於縫紉機臂部的前端部 被支撐成錢過曲柄機構與插穿支樓於縫幼機 動主轴連動而上下往復運動;針，安裝於該針架：驅 縫製用零件，台入砼於 士1 I吨口P， 件包3線鉤、布料進給機構，且收納於縫 床部之前端部；線張力器，用以調整供給針及線釣之= 及線釣線的張力；及針線送線襄置，用以隨著該針半之上 I往復運動’將針料出，使其經料張力器 通路，再供給針。 疋針線 【先前技術】 此種f知之具有針、㈣、㈣置之縫 經常維持良好的縫锣肤能沾紅Μ 沉八用以 縫裟狀悲的針線送出控制機構而言，例如 日本之特開平7_155488 例如 面裳m ϋΑ報所揭不’於縫初機臂部之前 下往復搖動之活動針線送線構件，並使針‘ 之上端部比縫匆機臂部前端 使針木 和、 Λ… ^ 〇丨更向上突出，於兮 大出之針架上端部分固定有 出於《亥 線通路。 針木问步上下往復運動之針 【發明内容】 不過，上述般習知之且 為了 m定針後m ，、有針線送線裝置之縫紉機甲， m:路，於縫匆機臂部前端 有貝通孔’來使針架之上 丨刀形成 刀比違上壁部分更向上突 1283275 出，因此，從貫通孔會漏油或塵埃侵入縫初機臂部内，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紉機，豆目的 在於提供-種具有針線送線裝置之縫匆機，其能省去針線 j路之使用’將縫紉機臂部大致密閉，防止漏油、塵埃冬 =入’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 紉機，係具有：針架，於縫幼機臂部的前端部被支樓成能 透過曲柄機構與插穿支擇於縫幼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 !，包含線鉤、布料進給機構，且收納於縫匆機床部之前 端，線張力益’用以調整供給針及線釣之針線及線鉤線 的張力；及針線送線裝番 ' 、、扃置，用以卩現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 供給針；其特徵在於· '•该針架之上下往復運動範圍，係 定成，在針架上異〇 上死點之狀態，能使針架之上端部不 向上突出縫匆機臂部前端部之上壁部分。 依據具有上述特徼的士 a 的本發明，由於省去用來針線送線 之針線通路之使用，故斜加 、 木之長度不須設定成使其上端部 向上大出縫匆機臂部前端部之上壁部分，而能謀求針架長 1283275 度之縮短及輕量化’容易實現縫製速度之高速化。此外， 縫幼機臂部前端部之上壁部分雖一般形成有針架裝入孔， Z過。亥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，來將縫幼機臂部大致密閉，因此，能防止 平申縫製作業時發生之漏油，亦能防止塵埃侵入縫幼機臂 部内。 本杂明之其他目的及功效，將在以下說明之實施例中 明確表示。 【實施方式】 以下根據圖式說明本發明之實施形態。 於絲Γ =1至圖3中’1是㈣機臂部’2是縫劫機床部， Τ縫嶺臂部i的左端部（前端部），將針架3 機禮γΓ ㈣，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下端料料夹4安裝三支針5 3的上下往復運動範圍設定為即使該針架3 : 部】左端部的上壁部分的突出縫切機臂 :收納針板及線釣、布料進給機構等鏠製用零件(由= 知，故省略詳細說明）。 （由於周 於上述鏠紉機臂部i的左右大 :::針線送線裝置之活動針線送線構件8 = 動主轴連動的針線送線…正反驅動旋轉’I過； 1283275 線送線台7’與針架3的上下往復運動同步，以該針線送 線軸6為支點上下（箭號u_d方向）往復搖動運動。於此活 動針線送線構件8右側的縫初機臂部1的前面部配置有與 針線供油裝置12安|成_體之固定針線通路13、及三彻 可變針線通路Π。該針線供油裝置12，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ih摩擦阻力，以 個別调整線張力）11送出並引導的4條線中有3條針線9 以聚集狀態通過，並於該等針線9塗佈潤滑油，該等三個 可變針線通路17,係能將通過此固定針線通路13後的三 :、’十線9插穿且在線通路安裝台14(固定連設於固定針線 t路13)上之位置旎分別透過長孔15及螺絲μ沿上下（箭 號ul-dl方向）變更並固定。 於上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-高度之3個帛1針線送 線孔8A及3個第2針線送線孔8B，以將自線張力器u送 出並通過固m線通路13及可變針線通路17而被供給引. 導之3條針線9，通過固定在縫匆機臂部j左端部的上下 大致中間位置的針線送線導件18上所形成的針線孔心並 朝3支針5進^•下降引導；且於此第i針線送線孔μ與第 2針線运線孔8B之間的活動針線送線構件8部分，將形成 有上下位置錯開之3個第3針線送線孔8(：的針線引導部化 連設成—體’該第3針線送線孔8G，係用來將該等兩針線 运線孔8A、8B間延伸的針線部分9a在其向下冑曲成左右 大致對稱的V字形之狀態下送出並引導。 1283275 下降引導。 若於此狀態下，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，以針線送線轴6為中心， 上下（箭號u-d方向）往復搖動運動，邊良好地維持線張力 器11所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造行既定的縫製。 另方面，在縫製如微細纖維布般由組織非常柔軟且 富有伸縮性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 於活動針線送線構件8的第2針線送線孔8β、第3針線送 線孔8C及第1針線送線孔8A，經針線送線導件ί8的針線 孔18a，並向針5被下降引導，因此，保持於該活動針線 送線構件8的針線9部分的全長長，並且此長針線9部 分的中途透過帛3針線送線孔8C以大致"形向下彎曲 著’故將線張力H U Μ針線9之送出摩擦阻力保持於使 線張力不會發生縫製不均的適#值，並且於㈣針線送線 構件8與針架3及針5的下降移動連動，而自0 5所示之 上昇位置向圖6所示之下降位置搖動運動時，⑷自可變針 線通路17至活動針線送線構件8前端的第工針線送線孔8α 的距離L是越下方越大，(b)自第2針線送線孔8β朝向第 3針線送線孔8C的針線部分以之姿勢逐漸向下，抵抗線 張力器U料之送出摩擦阻力的針線送出力f越下方越 強’以及（c)在活動針線送線構# 8搖動至圖6的下降位置 1283275 、稍上方位置的時點’第3針線送線孔3C與第1針線送線 3A間的針線部分9b被針線承座19的線支料1 ^擔住， 自/狀態起’活動針線送線構件8搖動至圖6的下降位置， 通^搖動被私住的針線部分9b改變成向上彎曲之姿勢， -抗線張力益1!所產生送出摩擦阻力的針線送出力1進一 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9送出量是越 '下方越大’故即使以如微細纖維布般由組織非常柔軟且 富有伸縮性的材質所構成之布料作為縫製對㈣，仍能使 2貫穿布料到達下死點時的針線部分、及針5自下死點 貝牙布料向上死點上昇時的針線部分不極度端緊，而具有 些許的鬆弛度’故能使在布料進給時繞在針板的爪上㈣ 圈順利脫離爪’並且能消除過度束緊，避免布料的縫製處 呈拱形隆起等縫製品f之降低，該過度束緊，係起因於在 針5自上方貫穿布料時針線將貫穿處的布料部分向下推 擠’或起因於# 5自下方脫離布料時針線及纏在其上的線 鉤線將脫離處之布料提起。 又，上述活動針線送線構件8前端的第i針線送線孔 8A 一 ”針線讀導件2 8的針線孔}仏之間延伸的針線供給 路位中返位置上的針線承座19的3個線支撐部…，係如 圖4所不形成有右側（線鉤進入針線紗圈最早之側）最高且 中門左側依序降低的段差，故即使線鉤進人形成於布料 下方的3條針線紗圈的時點是越左側之紗圈越晚，仍可將 活動針線送線構件8到達下降位料的3條針線9的鬆弛 12 1283275 1283275 ，敌璲製如 士 ”持大致均等—一一、辦难▼等般柔軟组鲻 化’能確實防止縫製處呈拱形隆起等縫製品質之降^。 又’上述實施形態中，雖已就設有針線承座19之 加以說日月，不過，如圖7及圖8所示疋月/ 承座19的3針式鏈狀拼縫機，仍能藉 疋:有:: :使得活動針線送線構…向下搖動，針線送出= 質之降低。 “織布枓時的縫製品 拼缝L上述實施形態中已就適用於3支針等多針式鏈狀 拚縫棧加以說明，不過，當然亦 紉機。 W用於多線鏈狀針法縫 、、又，較佳地，將活動針線送線構件8上具有帛 迗線孔.8C的針線引導部8a，如 ，、 士、甘a μ 團d的前旒《2-d2所示構 成、、位置能相對於活動針線送線構# 8沿上下方向變更 並固定二此情形’藉由針線引導部8a的上下位置變更， 可上下調節第3針線送線孔8C的位置， 動針線送線構件的上下往復搖動u 隨著活 制範圍。 減動運動所產生的送出量的控 【圖式簡單說明】 (一）圖式部分 =是曰=本發明的3針式鏈狀拼縫機的全體前視圖。 疋‘.·、貝不該3針式鏈狀拼縫機的針線送線裝置主要 部分的構成的立體圖。 圖3是圖2的要部的放大前視圖。 13 1283275 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$ 3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 之該3針式鏈狀拼縫機之前視圖。 圖7疋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 7C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。 (二）元件代表符號 1 縫紉機臂部 1A 上壁部分 2 縫紉機床部 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 針線部分 針線部分 線鉤線 線張力器 針線供油裝置 固定針線通路 線通路安裝台 長孔 螺絲 可變針線通路 針線導件 針線孔 針線承座 線支撐部 長孔 螺絲 151283275 玖, invention description: [Technical field to which the invention pertains] This description mainly relates to a slitting machine suitable for a needle thread feeding device of a multi-needle chain stitching machine. In particular, the system has the following components: = two: the seam device of the thread device: the needle holder is supported at the front end of the arm of the sewing machine to be a crank mechanism and the insertion of the branch in the joint of the motorized spindle Reciprocating motion; needle, mounted on the needle holder: parts for sewing sewing, the table is inserted into the 11 1 ton mouth P, the package is 3 wire hooks, the cloth feeding mechanism, and is stored at the front end of the sewing machine part; the thread tension For adjusting the tension of the supply needle and the line fishing = and the line fishing line; and the needle thread feeding line for reciprocating the needle half-over I to feed the needle to the material tensioner The passage is then supplied to the needle.疋Needle line [Prior technology] This kind of knives has needles, (4), (4). The seams are often maintained with good seams. The skin can be stained with red Μ Μ 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以 用以Kaiping 7_155488 For example, the face skirt m ϋΑ 所 揭 揭 于 于 于 于 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝 缝The 〇丨 向上 向上 向上 向上 向上 向上 向上 向上 向上 向上 向上 向上 向上 向上 向上 向上 向上 向上 向上 向上 。 。 Needlewood stepping up and down reciprocating needle [Summary of the invention] However, the above-mentioned conventional sewing machine for the fixing of the needle m, the sewing machine with the needle thread feeding device, m: road, the front end of the arm of the sewing machine The hole 'so that the boring tool forming the upper part of the needle frame protrudes upwards from the upper wall portion 1283275. Therefore, oil or dust leaks from the through hole into the initial arm portion of the sewing machine. In addition, the upwardly protruding needle thread path will move up and down at high speed. Reciprocating motion is not good from the safety of operators and the like. Further, the length of the needle holder is long and the needle thread path is fixed, so that the weight of the needle holder becomes large, and the speed of the sewing speed is limited. The present invention is directed to a sewing machine developed in view of the above problems, and the purpose of the bean is to provide a slitting machine having a needle thread feeding device, which can save the use of the needle thread j path, and substantially seal the arm portion of the sewing machine to prevent oil leakage. Dust winter=into and the speed of the sewing machine can be easily increased by shortening the length of the needle holder and reducing the weight. In order to achieve the above object, a sewing machine having a needle thread feeding device of the present invention has a needle holder which is supported by a branch in a front end portion of the arm portion of the sewing machine to be passed through a crank mechanism and inserted into the arm portion of the slitting machine. The drive spindle is reciprocated up and down in parallel; the needle is mounted on the lower end of the needle holder; the sewing uses zero!, including the wire hook and the cloth feeding mechanism, and is received at the front end of the seam machine part, and the thread tension is used Adjusting the tension of the needle and the thread hook line of the needle and the line; and the threading and feeding line of the needle thread, and the set, for reciprocating the needle frame, and sending the needle thread through the thread tensioner and The needle thread passage is fixed, and the needle is re-supplied; the feature is that the 'reciprocal range of the upper and lower reciprocating movements of the needle holder is determined to be in the state of the top dead center on the needle holder, so that the upper end portion of the needle holder does not protrude upward. The upper wall portion of the front end of the arm. According to the invention having the above-mentioned special taxi a, since the use of the needle thread passage for the needle thread feeding line is omitted, the length of the oblique addition and the wood need not be set such that the upper end portion thereof is upwardly larger than the front end of the arm portion. In the upper wall portion, it is possible to reduce the length and weight of the needle holder by 1,283,275 degrees, and it is easy to increase the sewing speed. Further, although the upper wall portion of the front end portion of the slit machine arm portion is generally formed with a needle holder insertion hole, Z passes. Since the hole is not used at all during normal sewing, for example, it can be closed with a lid in advance to substantially seal the arm of the seaming machine. Therefore, it is possible to prevent oil leakage during the sewing operation and prevent dust from intruding into the seam. Inside the arm of the baby machine. Other objects and effects of the present invention will be apparent from the examples described below. [Embodiment] Hereinafter, embodiments of the present invention will be described based on the drawings. In the silk Γ =1 to Fig. 3, '1 is (4) the arm portion '2 is the sewing machine part, the left end (front end) of the quilting arm i, and the needle holder 3 is γ Γ (4), and A needle pressing mechanism is provided adjacent to the needle holder 3 (details are omitted for details). The upper and lower reciprocating ranges of the three needles 5 3 mounted on the lower end of the needle holder 3 are set to be the protruding slitting arms of the upper wall portion of the left end portion of the needle holder 3: the needle plate and the line fishing Parts such as cloth feeding mechanisms, etc. (detailed description is omitted). (Because the circumference of the above-mentioned slinger arm i is large and left::: the needle thread feeding member of the needle thread feeding device 8 = the needle thread feeding line of the moving spindle... the front and rear drive rotation 'I over; 1283275 line feeder 7' is synchronized with the up-and-down reciprocation of the needle holder 3, and the needle thread feed shaft 6 is used as a fulcrum (up and down arrow u_d direction) to reciprocately move. The front portion of the sewing machine arm portion 1 on the right side of the movable needle thread feed member 8 The needle threading device 13 is provided with a fixed needle thread passage 13 and a three-threaded needle thread passage Π. The needle thread oil supply device 12 is connected to four thread tensioners (for three needle threads 9 and One line hook line 10 is provided with ih friction resistance, and three of the four lines sent and guided by the individual adjustment line tension 11 are passed in an aggregate state, and the lubricating oil is applied to the needle lines 9 The three variable needle passages 17 are capable of inserting the three:, 'ten line 9' through the fixed needle line passage 13 and the position of the line passage mounting table 14 (fixedly connected to the fixed needle line t 13) Change and fix the long hole 15 and the screw μ along the upper and lower sides (arrow ul-dl direction). The front (left) end of the movable thread feeding member 8 and the substantially intermediate portion 'in the longitudinal direction are respectively formed with three 帛1 needle threading holes 8A and three second needle threading holes 8B arranged at the same height. The three needle wires 9 that are fed from the thread tensioner u and passed through the solid m-line passage 13 and the variable needle passage 17 are fixed to the upper and lower intermediate positions of the left end portion of the slit arm portion j. The needle thread hole formed on the needle thread feeding guide 18 is guided downward toward the 3 needles 5; and the movable needle thread feeding line between the ith needle thread feeding hole μ and the second needle threading hole 8B In the member 8 portion, the three third needle thread feed holes 8 (the needle thread guide portions are connected to each other in the upper and lower positions) are formed, and the third needle thread feed holes 8G are formed for the two needle thread lines. The needle thread portion 9a extending between the line holes 8A, 8B is fed and guided in a state in which it is bent downward into a substantially symmetrical V shape. 1283275 Down guidance. If the needle holder 3 and the needle 5 are up and down in this state, The reciprocating driving motion, the movable needle thread feeding member 8 is synchronized with it, with the needle thread feeding shaft 6 as the center, up and down (arrow ud direction) The reciprocating rocking motion maintains the thread tension and the sewing state generated by the thread tensioner 11 while properly controlling the amount of the needle thread 9 to be fed to the three needle threads 9 without applying slack or excessive tension, and the thickness of the unconstrained fabric is uniform. Further, in the case of sewing a fabric composed of a material having a very soft and stretchable structure such as a microfiber cloth, the needle thread 9 supplied through the fixed needle thread passage 13 and the variable needle thread passage 17 is provided. The second needle thread feed hole 8β, the third needle thread feed hole 8C, and the first needle thread feed hole 8A formed in the movable needle thread feed member 8 are sequentially threaded through the needle thread hole 18a of the thread guide ί8. The needle 5 is guided downward, and therefore, the entire length of the portion of the needle thread 9 held by the movable needle thread feeding member 8 is long, and the portion of the long needle thread 9 is bent substantially in the middle through the 针3 needle threading hole 8C. Therefore, the frictional resistance of the thread tension HU Μ thread 9 is maintained at a value that does not cause unevenness in sewing, and the (four) needle threading member 8 is interlocked with the downward movement of the needle holder 3 and the needle 5, And since When the rising position indicated by 0 5 is oscillated to the lowering position shown in Fig. 6, (4) the distance L from the variable needle thread path 17 to the needle thread supplying hole 8α at the tip end of the movable needle threading member 8 is larger as it is lower. (b) The needle thread portion from the second needle thread feed hole 8β toward the third needle thread feed hole 8C gradually goes downward, and the needle thread delivery force f which is resistant to the frictional resistance of the thread tensioner U material is stronger. And (c) the needle thread portion 9b between the third needle thread feed hole 3C and the first needle thread feed line 3A is needle-retained at the time when the movable needle thread feed mechanism #8 is rocked to the lowering position 1283275 of FIG. 19 thread support 1 ^ hold, from the / state from the movable needle thread feed member 8 to the lowering position of Figure 6, through the shaking of the private needle line portion 9b changed to an upward bending posture, - line tension The needle threading force 1 generated by the benefit of the frictional resistance is further enhanced, and therefore, the needle thread delivery amount is larger as it goes downward. / The amount of the needle thread 9 generated by the movable thread feeding member 8 is larger as the 'lower side', so even if the fabric composed of a material that is very soft and stretchable like a microfiber cloth is used as the sewing pair (four), The needle thread portion that can make the 2 through the fabric to reach the bottom dead center, and the needle thread portion when the needle 5 rises from the bottom dead center to the upper dead point, is not extremely tight, and has a slight degree of slack, so that the cloth can enter When the needle is wound around the claw of the needle plate (four), the ring is smoothly separated from the claw' and the excessive tightening can be eliminated, and the sewing of the cloth is prevented from being reduced by the arched ridge and the like, which is caused by the excessive tightening of the needle. When the cloth is inserted through the cloth, the needle thread will push down the fabric portion of the through hole or cause the needle thread and the thread hook thread wrapped around it to lift off the fabric when it is detached from the bottom. Further, the third needle thread feed hole 8A at the tip end of the movable needle thread feed member 8 is a needle thread supply passage extending from the needle thread supply path of the needle thread feed guide member. The line support portion is, as shown in Fig. 4, the right side (the line hook enters the earliest side of the needle loop) is the highest and the left side of the middle door is sequentially lowered, so even if the line hooks into the person, the three pieces formed under the cloth The time of the needle thread loop is the later the yarn loop on the left side, and the movable needle thread feeding member 8 can still reach the slack of the three needle thread 9 of the falling material 12 1283275 1283275, and the enemy system is roughly equal. It is difficult to do such a soft group, and it can really prevent the sewing of the arched ridges and other seams. Further, in the above-described embodiment, although the needle thread holder 19 is provided with the sun and the moon, the three-needle chain stitching machine of the 疋月/ 座 19 shown in Figs. 7 and 8 can still Borrowing: There are:: : Make the active needle thread feeding line... shake down, the needle thread is sent out = the quality is reduced. "The sewing product seam L when weaving the fabric is described in the above embodiment, and is applied to a multi-needle chain seam stack such as a 3-pin. However, it is of course also a machine. W is used for a multi-line chain stitch method. Further, preferably, the needle thread guiding portion 8a having the threaded hole 8C on the movable needle thread feeding member 8 is formed as shown in the front side of "2-d2". The position can be changed and fixed in the vertical direction with respect to the movable needle thread feed structure #8. The position of the third needle thread feed hole 8C can be adjusted up and down by changing the vertical position of the needle thread guide portion 8a. Up and down reciprocating rocking of the wire member u With the range of the movement. Control of the amount of delivery caused by the damper movement [Simple description of the drawing] (1) Drawing part = yes 曰 = 3-needle chain stitching machine of the present invention The front view of the whole part. The perspective view of the main part of the needle threading device of the 3-pin chain stitching machine of Fig. 3 is a magnified front view of the main part of Fig. 2. 13 1283275 Fig. 4 It is an enlarged left side view of the main part of the needle thread bearing. Figure 5 is the movable needle thread feeding member in the raised position. Front view of the $3 needle chain stitching machine at the top dead center. / Fig. 6 is a front view of the 3-needle chain stitching machine when the movable needle thread feeding member is rocked to the lowered position (bottom dead center). Fig. 7 is a front view of the 3-needle chain stitching machine when the movable needle thread feeding member in the case of the needleless socket is in the ascending position (top dead center). Fig. 8 The movable needle thread feeding member in the case of the 7C needleless socket Front view of the 3-needle chain stitching machine when rocking to the lowering position (bottom dead center) (2) Component symbol 1 Sewing machine arm 1A Upper wall part 2 Sewing machine part 3 Needle holder 4 Needle holder 5 Needle 6 Needle thread feed shaft 7 Needle thread feeder 8 Active needle thread feed member 8a Needle guide 8A 1st thread feed hole 8B 2nd thread feed hole 8C 3rd thread feed hole 9 Needle thread part Needle part line hook thread tension Needle line oil supply device fixed needle line passage line installation table long hole screw variable needle line needle thread guide needle thread needle needle line support line support hole screw 15