1283274 玖、發明說明： 【發明所屬之技術領域】 本發明，係主要有關適用於多針式鏈狀拼縫機之針線 送線裝置。詳細言之，係在縫紉機臂部的左右大致中間位 置設有活動針線送線構件，其與在縫紉機臂部左端部支樓 成可上下往復運動之針架之上下往復運動同步連動而上下 往復搖動運動，以對於自線張力器送出後、通過固定針線 通路而被供給之針線，藉由活動針線送線構件的往復搖動 運動來進行該針線送出之控制並引導該針線朝安裝於針架 下端的針下降。 【先前技術】 此種縫紉機之針線送線裝置，不拘縫製布料的厚度、 所用針線的粗細、伸縮性等均經常維持良好的縫製狀態是 重要的’就達成此目的之手段而言，以往，一般是設置活 動針線送線構件的上下往復搖動運動量（行程）或該運動量 χ及固疋針線通路上的線孔的上下位置的可變機構，藉由‘ =可變機構，將該行程或線孔的上下位置按照縫製布料的 厚度等作變更操作，藉此增減針線供給路徑長度，控制針 線的送出量。 二 並且，上述習知針線送線裝置，係藉由可變機構調整 線送出能不拘縫製布料的厚度、針線之種類、伸縮 ，等的變化’均經常維持適當、良好的線張力、縫製狀態 从組織較硬、伸縮性較低的一般布料為縫製對象時，針 不會產生鬆他，而獲得具有適當緊度的完卫良好的縫製 1283274 品 不過，近年來微細纖維布等逐漸普及，以這種由組織 非常柔軟且富有伸縮性的材質所構成的布料作為縫製對象 時’若仍然使用上述習知針線送線裝置，呈不鬆弛之繃緊 狀態的針線及線鉤線所形成的接縫即繞在針板的爪上，難 以從爪上脫離，故不僅於布料進給上出現障礙，導致縫製 不良，並且縱然接縫從爪上脫離，在針穿過布料到達下死 點時’呈繃緊狀態的針線會將布料向下方推擠，於此狀態 下針自下死點向上死點上昇時，呈針線及插穿且纏繞在針 線上的線鉤線將布料的針貫穿部分往下拉的現象，而過強 束緊縫製處的布料部分，使縫製處的布料部分形成拱形隆 起，而降低縫製品質。 亦即，由於習知針線裝置所具備之可變機構到底不過 疋只有在以一般布料作為縫製對象之情形下，於可維持線 張力、縫製狀態範圍内可調整針線送出量的機構，因此， 該機構所控制之針線送出量的範圍，並不是避免在以如上 述微細纖維布等由組織非常柔軟且富有伸縮性的材質所構 成的布料情形下所發生的如上述縫製不良或呈拱形隆起所 造成縫製品質降低的足夠範圍，無法避免呈拱形隆起等縫 製品質之降低。 【發明内容】 本發明係有鑑於上述問題而提出的裝置，其目的在於 提=一種縫紉機之針線送線裝置，以一般之布料為縫製對 象時，能使該布料具有適當的緊度，而且即使以如微細纖 1283274 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 作為縫製對象時，仍能將線張力保持在不產生縫製不均之 適當程度，並能適當控制針線的送出量，避免布料進給之 障礙所造成的縫製不良或過度束緊所造成的縫製品質之降 低。 為了達成上述目的，本發明申請專利範圍第1項之縫 紉機之針線送線裝置，係於左端部將針架支撐成可上下往 復運動之縫初機臂部之左右大致中間位置之前面部，設有 與針架之上下往復運動同步連動而上下往復搖動運動之活 動針線送線構件；於該活動針線送線構件之前端部及長邊 方向之大致中間部，形成有第丨針線送線孔及第2針線送 線孔，以將自線張力器送出並通過固定針線通路而供給之 針線朝安裝於針架下端之針進行下降引導；其特徵在於： 於該活動針線送線構件上之第丨針線送線孔與第2針線送 線孔之間設有具備第3針線送線孔之針線引導部，該第3 針線送線孔，係用來將在該等兩針線送線孔之間延伸之針 線部分在其向下彎曲之狀態下送出並引導。 依據具有上述特徵的本發明縫紉機之針線送線裝置， 引導通過固定針線通路而供給的針線依序通往形成於活動 針線送線構件的第1至第3針線送線孔並朝針下降，藉此 增加保持通往該活動針線送線構件的第1至第3針線送線 孔的針線部分的全長，並且使該長的針線部分之中途向下 彎曲，因此，可將線張力器賦予針線的送線摩擦阻力保持 於使線張力均勾的適#值，並且在活動針線送線構件由上 1283274 針線送=動:針賦:，力的 M r# b lt 卜万越大。據此，以組織 、Mi較㈣-般布料作為縫㈣象時 知同樣地透過可變機構-不鬆弛的ϋ 心里’能使針線具有 通田緊度而進行既定的縫製，並且即使以如矜細 纖維布般由組織非常柔軟且 』 有伸縮性的材質所構成之布 绩=縫製對象時，仍可使針貫穿布料到達下死點時的針 产端i以及針自下死點向上死點上昇時的針線部分不會極 =緊，而是保持些許鬆他度，因此’能使在布料進給時 、“針板的爪上的紗圈順利脫離爪，並且能消除過度束緊 ’避免布料的縫製處呈换形隆起等縫製品質之降低，該過 度束緊’係起因於在針自上方貫穿布料時針線將貫穿處的 布料部分向下推擠，或起因於針自布料下方向上死點上昇 時針線及纏在其上的線鉤線將布才斗的針I穿部分提起。 因此，依據本發明，對於一般布料乃至於如微細纖維 布般由非常柔軟且富有伸縮性的材質所構成之布料的性質 不同的廣大範圍的布料，能經常獲得高品質之縫製品。 於此，就該針線引導部的第3針線送線孔而言，只要 使在第1針線送線孔與第2送線孔之間延伸的針線部分向 下弯曲即可，不過，如申請專利範圍第2項所記載，最好 是將在第1針線送線孔與第2針線送線孔之間延伸的針線 部分在其向下彎曲成左右大致對稱的V字形之狀態下送出 並引導。 又’在上述構造的本發明縫紉機之針線送裝置中，藉 1283274 由在活動針線送線構件設置具有第3針線送線孔的針線引 導部來確保針線之送出量控制範圍，故不必為了確保盘此 同等大小的送出量控制範圍，而使針架突出至縫幼機臂部 上壁部之上方，於此突出的針架的上端部設置針線通路。 因此，如申請專利範圍第3項所載發明，能將針架的上下 在復運動範圍設定在不向上突出縫紉機臂部的上壁部分的 範圍，藉由採用此種構&，可謀求針架長度之縮短及輕量 化，並能容易實現縫製的高速化，亦可藉由將縫紉機臂部 雄、閉來防止漏油、塵埃侵入。 雖然不必於針架之上端部設置針線通路，但針線的上 下運動範圍，亦可如申請專利範圍第4項所載發明，設定 於在針架上昇運動至上死點時，針架之上端部向上突出縫 紉機臂部的上壁部分的範圍。於此情形下，由於可發揮自 針架上端部將長時間連續縫製所產生的滑動熱排入大氣中 的散熱機能，故可防止針架、針變得異常高溫、縫紉機臂 部内充滿熱所造成的縫製作業之不便。 又，於上述構成的本發明縫紉機之針線送線裝置_， 汝申叫專利範圍第5項所載發明，該活動針線送線構件上 的針線引導部，其上下位置最好能自由變更並固定，使形 成於其上的第3針線送線孔的位置可上下調節。於此情形 下’可藉由變更針線引導部的上下位置來進一步增佳活動 針線运線構件的上下往復搖動運動所產生之送出量之控制 範圍。 又’於上述構成的本發明縫紉機之針線裝置中，如申 1283274 凊專利範圍第6項所載發明，將該活動針線送線構件之的 上下搖動運動範圍設定成，針架在上死點時自第丨針線送 、、在孔；第2及第3針線送線孔至針架下端的針為止的針線 長度比針架在下死點時自第1針線送線孔經第2及第3針 Λ送線孔至針条下端的針為止的針線長度還長，藉此設定 ，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象時，即使未利用可變機構調整 針線的送出量，亦能使針貫穿布料到達下死點時的針線部 分及針自下死點向上死點上昇時的針線部分不會極度繃緊 而疋使該等針線部分具有鬆弛度，使布料進給時的接縫 順利脫離爪，並消除針線及線鉤線的過度束緊而確實避免 布料縫製處呈拱形隆起等縫製品質之降低。 再者，於上述構成的本發明縫紉機之針線送線裝置中 如申凊專利範圍第7項所載發明，於上述活動針線送線 構件前端的第1針線送線孔、與針或針線送線導件（固定於 針或縫勿機臂左端部上下大致中間位置）之間延伸的針線供 、口路仅之中途位置，設有針線承座，以僅在活動針線送線 構件向下搖動時擋住位於第i針線送線孔與第3針線送線 孔之間的針線部分，使該針線部分成為向上彎曲之姿勢， 藉此可更增加針在下死點附近時的針線的鬆弛量，因此， 可更確實防止以如微細纖維布般柔軟且富有伸縮性的布料 作為縫製對象時的縫製品質之降低。 於此針線承座，如申請專利範圍第8項所載發明， 其上下位置最好可變更並固定。#由如必匕變更固定針線承 1283274 於上述縫紉機臂部1的左右大致中間位置的前面部設 有活動針線送線構件8，其藉著與上述驅動主軸連動的針 線送線轴6的正反驅動旋轉，透過針線送線台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 縫紉機臂部1的前面部配置有與針線供油裝置丨2安裝成一 體之固定針線通路13、及三個可變針線通路丨7。該針線供 油裝置12 ,係從4個線張力器（可對3條針線9及丨條線 鉤線10賦予送出摩擦阻力，以個別調整線張力）丨丨送出並 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 過此固定針線通路丨3後的三條針線9插穿且在線通路安裝 台14(固定連設於固定針線通路13)上之位置能分別透過長 孔15及螺絲16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，分別形成有排在同一高度之3個帛i針線送 線孔8A及3個第2針線送線孔8B，以將自線張力器丨丨送 出並通過固定針線通路13及可變針線通路17而被供給引 導之3條針線9，通過固定在縫紉機臂部丨左端部的上下 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進行下降引導；且於此第w線送線孔8a與第 2針線送線孔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個帛3針線送線孔8C的針線引導部 8a連設成-體’該第3針線送線孔8(：，係用來將該等兩針 13 1283274 針線送線構件8的第2針線送線孔8β_^第3針線送線孔8C 第1針線送線孔8A〜針線送線導件〗8的針線孔18a的 順序通過，並分別朝3支針5被下降引導。 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，以針線送線軸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 力益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進行既定的縫製。 其次，就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加以說明。於此情形下 ，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的帛2針線送線孔 8B1 3針線送線孔8C及第i針線送線孔8a，經針線送 線導件18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部分的中途透過第3針線送線孔8c以大致v 字形向下彎曲’故將線張力器"賦予針線9之送出样阻 力保持於使線張力不會發生縫製不均的適當值，並且:活 動針線送線構件8與針架3及針5的下降移動連動，而自 圖5所示之上昇位置向6所示之下降位置搖動運動時， ①自可變針線通路17至活動針線送線構件8前端的第 線送線孔8A的距離L是越下方越大，②白楚0 a 曰乐Z針線送德$ 8B朝向第3針線送線孔8C的針線部分9 、、'' 安勢逐漸向下 15 1283274 中間、左側依序降低的段差，故即使線鉤進入形成於布料 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到達下降位置時的3條針線9的鬆弛 量保持大致均等，故縫製如微細纖維布等般柔軟組織布料 時，能確實防止縫製處呈拱形隆起等縫製品質之降低。 又，上述實施形態中，雖已就設有針線承座19之情形 加以說明，不過，如圖7及圖8所示’即使是未設有針線1283274 发明Invention Description: [Technical Field] The present invention relates to a needle thread feeding device suitable for a multi-needle chain stitching machine. Specifically, a movable needle thread feeding member is disposed at a substantially right intermediate position on the left and right sides of the sewing machine arm portion, and is reciprocally moved up and down in parallel with the needle holder that can be reciprocated up and down in the left end portion of the sewing machine arm portion. The movement is performed by the reciprocating rocking motion of the movable needle thread feeding member for the needle thread supplied from the thread tensioner after being sent through the fixed needle thread passage, and guiding the needle thread toward the lower end of the needle holder. The needle drops. [Prior Art] It is important that the needle thread feeding device of such a sewing machine maintains a good sewing state, such as the thickness of the unsealed fabric, the thickness of the needle thread used, and the stretchability, etc. Is a variable mechanism for setting the up and down reciprocating rocking movement amount (stroke) of the movable needle thread feeding member or the upper and lower positions of the movement amount χ and the thread hole on the fixed needle thread path, by the variable mechanism, the stroke or the line hole The vertical position of the sewing fabric is changed in accordance with the thickness of the sewing fabric, thereby increasing or decreasing the length of the needle thread supply path and controlling the amount of needle thread to be fed. In addition, the above-described conventional needle thread feeding device is capable of maintaining a proper thickness, a good thread tension, and a sewing state by changing the thickness of the non-seamable fabric, the type of the needle thread, and the expansion and contraction by the variable mechanism adjusting wire. When the general fabric with a hard tissue and low stretchability is a sewing object, the needle does not loosen, and a well-stitched sewing 1283274 with appropriate tightness is obtained. However, in recent years, microfiber cloth has become popular. When a fabric made of a material that is very soft and stretchable is used as a sewing object, if the above-mentioned conventional needle thread feeding device is still used, the seam formed by the needle thread and the thread hook line which is not slack and tight is Wrapped around the claws of the needle plate, it is difficult to detach from the claws, so not only obstacles appear on the feeding of the cloth, but also the sewing is poor, and even if the seam is detached from the claw, the needle is stretched when it passes through the cloth to the bottom dead center. The needle thread in the tight state pushes the cloth downwards. In this state, when the needle rises from the bottom dead center to the top dead center, the needle thread and the thread hook that is inserted and wound around the needle thread will be Material through the needle portion of the pull down phenomenon, too strong straining cloth sewn at the portion, so that the fabric portion is formed at a sewing arcuate ridges, reduce the sewing quality. In other words, since the variable mechanism provided in the conventional needle threading device can only adjust the needle thread delivery amount within the range of the thread tension and the sewing state in the case where the general cloth is used as the sewing target, the mechanism can be adjusted. The range of the amount of needle thread to be fed by the mechanism is not to avoid the above-mentioned poorly-sewed or arched bulge which occurs in the case of a fabric composed of a material which is very soft and stretchable, such as the above-mentioned microfiber cloth. A sufficient range of reduction in the quality of the seam product is avoided, and the quality of the seam product such as the arched ridge cannot be avoided. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide a needle thread feeding device for a sewing machine, which can make the cloth have an appropriate tightness when a general cloth is used for sewing, and even When a fabric composed of a material that is very soft and stretchable like a microfiber 1283274 is used as a sewing object, the thread tension can be maintained at an appropriate level without unevenness of sewing, and the needle thread can be appropriately controlled. The amount of the seam product caused by poor sewing or excessive tightening caused by the obstacle of the cloth feeding. In order to achieve the above object, the needle thread feeding device of the sewing machine according to the first aspect of the present invention is characterized in that, at the left end portion, the needle holder is supported so as to be vertically and reciprocally movable to the front and rear of the initial arm portion of the seam. a movable needle thread feeding member that moves in synchronization with the upper and lower reciprocating movements of the needle holder, and a third thread forming hole and a middle portion of the front end portion and the longitudinal direction of the movable needle thread feeding member a needle threading hole for lowering and guiding the needle thread fed from the thread tensioner and being supplied through the fixed needle thread passage toward the needle attached to the lower end of the needle holder; characterized in that: the third thread thread on the movable needle thread feeding member A needle thread guiding portion having a third needle thread feeding hole is provided between the wire feeding hole and the second needle thread feeding hole, and the third needle thread feeding hole is for extending between the two needle thread feeding holes. The needle thread portion is fed and guided in a state where it is bent downward. According to the needle thread feeding device of the sewing machine of the present invention having the above-described features, the needle thread supplied through the fixed needle thread path is guided to the first to third needle thread feeding holes formed in the movable needle thread feeding member, and is lowered toward the needle. This increase maintains the entire length of the needle thread portion leading to the first to third needle thread feed holes of the movable needle thread feeding member, and bends the long needle thread portion downward, so that the thread tensioner can be imparted to the needle thread The frictional resistance of the wire is maintained at the appropriate value of the wire tension hook, and the moving needle thread feeding member is sent by the upper 1283274 needle thread = motion: needle assignment: the force of the M r# b lt is greater. According to this, in the case of the tissue, the Mi (four)-like fabric is used as the slit (four), and the same mechanism is passed through the variable mechanism - the non-relaxed ϋ heart can make the needle thread have the tightness of the field and perform the predetermined sewing, and even if As for the fine fiber cloth, the fabric is made of a material that is very soft and has a stretchable material. When the object is sewn, the needle can be passed through the fabric to reach the bottom dead center and the needle is dead from the bottom dead center. The part of the needle thread when it rises is not extremely tight, but it is kept a little loose, so that 'the yarn loop on the claw of the needle plate can be smoothly disengaged from the claw when the cloth is fed, and the excessive tightening can be eliminated' The sewing position of the fabric is reduced by the shape of the embossed embossed product, which is caused by the fact that the needle thread pushes down the cloth portion passing through the needle when the needle penetrates the cloth from above, or causes the needle to die upward from the bottom of the cloth. When the point is raised, the needle thread and the thread hook line wrapped thereon lift the needle I through the cloth. Therefore, according to the present invention, it is made of a very soft and stretchable material such as a general cloth or a microfiber cloth. Constitute A high-quality sewing product can be obtained frequently in a wide range of fabrics having different properties of the material. Here, in the third thread feeding hole of the needle thread guiding portion, the first thread feeding hole and the second feeding are provided. The needle thread portion extending between the line holes may be bent downward. However, as described in the second item of the patent application, it is preferable that the needle thread portion extending between the first needle thread feed hole and the second needle thread feed hole is provided. It is fed and guided in a state in which it is bent downward into a substantially symmetrical V-shape on the left and right. In the needle threading device of the sewing machine of the present invention constructed as described above, the third needle thread feeding line is provided by the movable needle thread feeding member by 1283274. Since the needle thread guiding portion of the hole ensures the needle thread feeding amount control range, it is not necessary to protrude the needle holder to the upper portion of the upper wall portion of the slitting machine arm in order to secure the same amount of the feeding amount control range of the disc. Therefore, the needle thread passage is provided at the upper end portion of the frame. Therefore, as in the invention of claim 3, the upper and lower movement range of the needle holder can be set to a range that does not protrude upward toward the upper wall portion of the sewing machine arm portion. By adopting such a configuration, it is possible to shorten the length and weight of the needle holder, and it is easy to increase the speed of sewing, and it is also possible to prevent oil leakage and dust from entering by sewing the arm of the sewing machine. The needle thread passage is provided at the upper end of the needle holder, but the upper and lower movement range of the needle thread can also be set as in the invention of claim 4, and the upper end of the needle holder protrudes upward when the needle holder is moved up to the top dead center. The range of the upper wall portion of the arm portion. In this case, since the heat dissipation function of discharging the sliding heat generated by continuous sewing for a long time from the upper end portion of the needle holder can be exhibited, the needle holder and the needle can be prevented from becoming abnormal. The high temperature and the inconvenience of the sewing operation caused by the heat in the arm portion of the sewing machine. In addition, the needle threading device of the sewing machine of the present invention having the above-described configuration is disclosed in the fifth aspect of the patent application, the movable needle thread feeding member Preferably, the needle thread guiding portion can be freely changed and fixed so that the position of the third needle threading hole formed thereon can be adjusted up and down. In this case, the control range of the amount of delivery due to the up and down reciprocating rocking motion of the movable needle threading member can be further improved by changing the vertical position of the needle thread guiding portion. Further, in the needle thread device of the sewing machine of the present invention constructed as described above, the invention is embodied in the invention of the sixth aspect of the patent application No. 1283274, wherein the upper and lower rocking movement range of the movable needle thread feeding member is set to be at the top dead center. The needle thread length from the 丨 丨 丨 、 、 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; When the length of the needle thread from the wire feed hole to the needle at the lower end of the needle bar is long, it is set to use a cloth made of a material that is very soft and stretchable like a microfiber cloth as a sewing object, even if it is not used. The variable mechanism adjusts the delivery amount of the needle thread, and also enables the needle thread portion when the needle penetrates the fabric to reach the bottom dead center and the needle thread portion when the needle rises from the bottom dead center to the upper dead point without being extremely tight, so that the needle thread portion is slackened. Degree, the seam when the fabric is fed smoothly breaks away from the claw, and the excessive tightening of the needle thread and the thread hook line is eliminated, and the quality of the seam product such as the arched ridge is surely avoided. Further, in the needle thread feeding device of the sewing machine of the present invention having the above-described configuration, as in the invention of claim 7, the first needle thread feed hole at the front end of the movable needle thread feed member, and the needle or needle thread feed line The needle thread supply and the mouth extending between the guide member (fixed to the needle or the left and right positions of the left end of the arm are not only halfway), and the needle thread socket is provided to only swing the movable needle thread feeding member downward. Blocking the needle thread portion between the ith needle thread feed hole and the third needle thread feed hole, so that the needle thread portion is bent upward, thereby increasing the amount of looseness of the needle thread when the needle is near the bottom dead center. It is possible to more reliably prevent the fabric which is soft and stretchable like a microfiber cloth from being used as a sewing object. In this needle thread bearing seat, as in the invention of claim 8 of the patent application, the upper and lower positions are preferably changed and fixed. #由如匕 The fixed needle thread holder 1283274 is provided with a movable needle thread feed member 8 at the front portion of the left and right substantially intermediate positions of the sewing machine arm portion 1, which is forward and reverse by the needle thread feed shaft 6 that is interlocked with the drive spindle. The rotation of the drive is transmitted through the needle thread feed line 7 in synchronism with the up-and-down reciprocation of the needle holder 3, and the needle thread feed shaft 6 is oscillated up and down (arrow direction ud direction) to reciprocately move. A fixed needle thread path 13 and a plurality of variable needle thread passages 7 that are integrally attached to the needle threading device 丨2 are disposed on the front surface of the sewing machine arm portion 1 on the right side of the movable thread feeding member 8. The needle threading device 12 is provided in four lines from four line tensioners (which can impart frictional resistance to the three needle threads 9 and the string line hook line 10, and individually adjust the thread tension). The three needle threads 9 pass through the gathering state, and the lubricating oil is applied to the needle threads 9, and the three variable needle thread passages 17 can insert the three needle threads 9 passing through the fixed needle thread passage 丨3 through the wire passage. The position of the mounting table 14 (fixedly connected to the fixed needle thread path 13) can be changed and fixed along the upper and lower sides (arrow ul-dl direction) through the long hole 15 and the screw 16, respectively. Three 帛i needle thread feed holes 8A and three second needle thread feed holes 8B arranged at the same height are formed at the front (left) end and the substantially middle portion of the longitudinal direction of the needle thread feed member 8 respectively. The three needle wires 9 that are fed from the thread tensioner and are guided by the fixed needle thread passage 13 and the variable needle thread passage 17 are attached to the needle thread feeding line at the upper and lower intermediate positions of the left end portion of the sewing machine arm portion. The needle thread hole formed on the guide 18 is guided downward toward the three pins 5; and the movable needle threading member 8 portion between the first w wire feed hole 8a and the second needle thread feed hole 8B will The needle thread guiding portion 8a, which is formed with three 帛3-needle threading holes 8C, which are vertically displaced, is connected to the body. The third needle threading hole 8 (: is used for threading the two needles 13 1283274 The second needle thread feed hole 8β_^ the third needle thread feed hole 8C of the member 8 passes through the order of the needle thread hole 18a of the first needle thread feed hole 8A to the needle thread feed guide 8 and is lowered toward the three needles 5, respectively. If in this state, the needle holder 3 and the needle 5 are driven to move up and down, the movable needle thread feeding member 8 is Synchronously, the needle thread feeding bobbin 6 is centered, and the up and down (arrow direction ud direction) reciprocates and shakes, and the thread tension and the sewing state generated by the thread tension benefit 11 are well maintained, and no slack or excessive tension is applied to the three strips. In the manner of the needle thread 9, the amount of the needle thread 9 can be appropriately controlled, and the thickness of the unbonded fabric can be sewed at a predetermined time. Next, a cloth made of a material having a very soft and stretchable structure such as a microfiber cloth is sewn. In this case, the needle thread 9' supplied through the fixed needle thread passage 13 and the variable needle thread passage 17 sequentially passes through the 针2 needle thread feed hole 8B1 formed in the movable needle thread feed member 8 and the needle thread feed hole 8C and the first The needle thread feed hole 8a passes through the needle thread hole 18a of the needle thread feed guide 18 and is guided downward toward the needle 5. Therefore, the entire length of the needle thread 9 portion held by the movable needle thread feed member 8 is long, and the long needle is long. In the middle of the line 9 portion, the third needle thread feed hole 8c is bent downward in a substantially v-shape. Therefore, the wire tensioner is provided with the resistance of the needle thread 9 so that the thread tension does not occur unevenly. Appropriate value, and: the movable needle threading member 8 is interlocked with the downward movement of the needle holder 3 and the needle 5, and the self-variable needle thread path is moved from the ascending position shown in FIG. 5 to the downward position shown in FIG. The distance L from the 17th to the first wire feed hole 8A at the front end of the movable needle thread feed member 8 is larger as it goes downward, and the needle thread portion 9 of the third needle thread feed hole 8C is turned upwards. ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, When the needle thread feeding member 8 reaches the lowered position, the slack amount of the three needle threads 9 is kept substantially equal. Therefore, when the soft tissue cloth such as a microfiber cloth is sewn, it is possible to surely prevent the sewn product from being lowered in the sewing portion. Further, in the above embodiment, the case where the needle thread holder 19 is provided has been described, but as shown in Figs. 7 and 8, even if no needle thread is provided
承座19的3針式鏈狀拼縫機，仍能藉由前述①、②的作用 使得活動針線送線構件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縫製品質 之降低。 ^The 3-needle chain stitching machine of the socket 19 can still swing the movable needle thread feeding member 8 downward by the action of the above 1, 2, and the needle thread delivery amount is increased to prevent sewing such as microfiber cloth. The quality of the seam product is reduced when the tissue is soft. ^
順便提一下，本發明人，於本發明提案之際以本案1 請人所試製的實際3針式鏈狀拼縫機為對象，於有針線月 座及無針線承座之各個情形，測定針架到達上死點時供』 左右2支針的針線長度a、及針架到達下死點時供至左/右 支針的針線長度B，所獲得之結果如表1及表2所示。 又各針線長度A及B，係如圖9所示，形成針線令 給路徑之各針線通路間、針線送線孔間等6個測定點門合 尺寸①至⑥的總和4，表卜2中數值的單位為_ β 17 1283274 表1 (有針線承座之情形） 針 架 上 死 點 測定點 ① ② ③ ④ ⑤ ⑥ A 左針線 18 55 25 24 80 125 327 右針線 26 44 25 23 75 120 313 針 架 下 死 點 測定點 ① ② ③ ④ ⑤ ⑥ B 左針線 18 73 36 30 36 158 351 右針線 25 67 36 29 39 152 348By the way, the inventor of the present invention has applied the actual 3-needle chain stitching machine which was tried out by the applicant in the present invention, and measured the needle in each case of the needle-and-needle seat and the needle-free socket. When the frame reaches the top dead center, the needle thread length a of the left and right needles and the needle thread length B supplied to the left/right needle when the needle frame reaches the bottom dead center are shown in Table 1 and Table 2. Further, the lengths A and B of the needle thread are as shown in Fig. 9, and the total of the combined measuring sizes 1 to 6 of the six measuring points, such as between the needle thread passages and the needle threading holes of the needle threading path, is formed. The unit of the value is _ β 17 1283274 Table 1 (in the case of needle socket) The top dead point of the needle holder 1 2 3 4 5 6 A Left needle thread 18 55 25 24 80 125 327 Right needle thread 26 44 25 23 75 120 313 Needle frame bottom dead center measurement point 1 2 3 4 5 6 B Left needle thread 18 73 36 30 36 158 351 Right needle thread 25 67 36 29 39 152 348
18 1283274 承#之情形)18 1283274 The case of Cheng #)
_____ , - /由上述表1及表2的測定尺寸可知，在有針線承座之 2形，針架在上死點時供至左右2支針的針線長度a與針 木在下死點時供至左右2支針的針線長度β的比率（A⑻於 左針線為1· 0():1.07，於右針線為1G():111，又，無針線 =座之情形的比率（A:B)於左針線為i•⑽·1()2，於右針線 出旦 1. 0(Μ· 〇7’在任—種情形’針架在下死點時的針線送 布：：：均大且有鬆弛度。因此，即使在縫製如微細纖維 :又柔軟且富有伸縮性的布料情形下，仍能獲得完工 良好的縫製品，而不會於縫製處產 右料綠I t ^ , 展王不、形隆起。特別是在 有針線承座之情形，鬆弛量大而 。 b獲件°口質更高的縫製品 且’上述實施形態中已就適用於 拼縫機加以說明，不過，當然亦可^ _等多針式鍵狀 初機。 、於多線鏈狀針法縫 又，較佳地，將活動針線送線構件8 送線孔8C的針線引導部8a，如圖3 、〜上具有第3針線 成，其位置能相對於活動針線送線^箭鞔u2—d2所示構 8沿上下方向變更 1283274 並口疋於此情形，藉由針線引導部&的上下位置變更， 可上下口周喊第3針線送線孔8C的位置，進一步擴大隨著活 動針線送線構件的上下往復搖動運動所產生的送出量的控 制範圍。 【圖式簡單說明】 (一）圖式部分 圖1疋適用本發明的3針式鏈狀拼縫機的全體前視圖 〇 圖2疋顯不該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。 圖4是針線承座的要部的放大左側視圖。 圖5疋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疋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。 圖9是說明以本發明提案時本案申請人試作的實際鏈 狀拼縫機為對象，測定上死點時及下死點時供至左右兩支 針的針線長度所用的測定點的要部前視圖。 (二）元件代表符號 20 縫紉機臂部 上壁部分 縫紉機床部 針架 針夾 針 針線送線軸 針線送線台 活動針線送線構件 針線引導部 第1針線送線孔 第2針線送線孔 第3針線送線孔 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 21 1283274 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_____ , - / From the measured dimensions of Tables 1 and 2 above, it can be seen that in the case of a needle-shaped socket, the needle thread length a supplied to the left and right needles at the top dead center and the needle wood at the bottom dead center are supplied. The ratio of the needle thread length β of the left and right needles (A(8) is 1·0(): 1.07 on the left needle thread, 1G(): 111 on the right needle thread, and the ratio (A:B) in the case of needleless=seat The left needle thread is i•(10)·1()2, and the right needle thread is 1. 0 (Μ· 〇7' in the case of the case - the needle thread feed at the bottom dead center::: both large and slack Therefore, even in the case of sewing a fabric such as microfiber: soft and stretchable, a well-finished sewing product can be obtained without producing a right green I t ^ at the sewing position, and the king is not shaped and raised. Especially in the case of needle-bearing sockets, the amount of slack is large. b. The sewing products with higher mouth quality are obtained and 'the above embodiment has been applied to the stitching machine, but of course, ^ The multi-needle type key-shaped initial machine. In the multi-line chain stitching method, preferably, the needle thread guiding portion 8a of the movable needle thread feeding member 8 of the wire feeding hole 8C is as 3, ~ has a third needle thread, its position can be compared with the movable needle thread feeding line ^ arrow 鞔 u2 - d2 structure 8 in the up and down direction change 1283274 and the mouth 疋 in this case, by the needle thread guide & When the position is changed, the position of the third needle thread feed hole 8C can be called up and down, and the control range of the delivery amount due to the vertical reciprocating rocking motion of the movable needle thread feed member can be further expanded. [Simplified illustration] (1) BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front view of a whole of a three-needle chain stitching machine to which the present invention is applied. Fig. 2 is a perspective view showing a configuration of a main part of a needle threading device of the three-needle chain stitching machine. 3 is an enlarged front view of the main part of Fig. 2. Fig. 4 is an enlarged left side view of the main part of the needle thread socket. Fig. 5 is a 3-needle chain shape of the movable needle thread feeding member at the rising position (top dead center) Front view of the stitching machine 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 the movable needle thread feeding line in the case of the needleless socket. The 3 stitches when the component is in the raised position (top dead center) Front view of the chain stitching machine Fig. 8 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 rocked to the lowering position (bottom dead center). In the actual chain stitching machine which the applicant of the present invention tried in the proposal of the present invention, the front view of the main part of the measuring point for the length of the needle thread supplied to the left and right needles at the top dead center and the bottom dead center is measured. ) Component symbol 20 Sewing machine arm upper wall part Sewing machine part Needle needle pin Needle thread supply spool Needle thread feed line Activity needle thread Feeder component Needle guide part 1st thread supply hole 2nd needle thread feed hole 3rd thread delivery Wire hole needle thread part needle thread part line hook thread tensioner needle thread oil supply device fixed needle thread passage line passage installation table long hole screw variable needle thread passage 21 1283274 18 needle thread guide 18a needle thread hole 19 needle thread socket 19a line support portion 20 long Hole 21 screw
22twenty two