200413591 玖、發明說明： 【^^明戶斤屬領 發明領域 本發明涉及一種用於在縫料中形成鈕扣孔線縫的鈕扣 5 孔縫幼機。 L先前技術】 發明背景 DE4110684C1(對應於US5156103)描述了一種鈕扣孔 缝紉機，尤其是一種圓頭（eye-type)鈕扣孔縫紉機，包括一 10個基板、一個頂臂，和一個連接該基板和頂臂的支架。它 還包括一個通過一個主驅動馬達可驅動地上下往復運動的 針桿，該針桿具有一個針並支承在所述臂中；一個保持縫 料的縫料夾。在基板中設置有一個輸送圈結線（l〇〇per thread)的鈎線裝置。具有一個導線裝置，該裝置通過一個 15设置在圈結線進給行程的線拉出器沿進給行程將圈結線進 給到鈎線裝置。該拉出器包括一個與一個真空發生器配合 的抽吸裝置用於在兩個鈕扣孔縫紉過程之間的圈結線尾部 的挑線(take-up)。該已知裝置的缺點在於只能將圈結線拉出 一個很短的長度。 20 Duerk〇PP Adler AG小冊子“服務指南578” 98年3月 發行第No.0791578037號描述了一種圓頭鈕扣孔縫紉機的 電氣動拉線裝置，通過該拉線裝置將圈結線從一個梭心上 拉下。設置了一個可樞轉的桿，該桿的端部具有一個引導 圈結線的小孔(eyelet)。該桿由一個氣動致動的活塞_缸驅動 5 裝置驅動樞轉’該桿的工作速度可以由-個節流閥調節。 拉出的圈結線在無㈣驗暴露舰，可能會造成自 身纏結’這具有産生縫城障的風險1 了將圈結線拉出 所需和所«的長度，該桿必須具有相當切樞轉角度。 如果該桿必須以一個相對寬的角度樞轉，則操作所述:的 該氣動致動的活塞·缸鶴裝置的結構需要相應的尺寸。一 方面，爲了該圈結線的穿線，該桿必須容易接近；在另一 方面，它必彡H㈣魏置難叫止任何傷害風險。 【發明内容3 發明彳既要 本發明的-個目的在於提供一種紐扣孔縫幼機，其線 拉出裝置設計成無故障操作並且結構簡單。 根據本發明，上述目的通過一種用於在縫料中生成鈕 扣孔線縫的鈕扣孔縫紉機而實現，該鈕扣孔縫紉機包括: 個基板、一個頂臂，和一個連接該基板和頂臂的支架·一 個通過一個主驅動馬達可驅動地上下往復運動的針浐 ▲ 針桿具有-個針並支承在所述臂中； 置 缝料夾；-個設置在基板内側的保持線的釣線裝置 個用於沿進給行程將圈結線進給到鈎線裝置的導線壯 一個沿圈結線進給行程設置的線拉出裝置，兮線拉出 裝置具有多個沿進給行程彼此以一定距離分開設置的第一 肋，並具有多個第二肋，所述第二肋彼此以—定距離八門 設置，並且可以朝向第一肋送入並插入第一 切之間，從而 可將圈結線以曲折的構形拉出。由於圈結線在被拉出時是 曲折的’所以第一肋和第二肋朝向彼此送入不需要長的行 皲。如果具有一足夠數目的肋，則只需幾毫米（的行程）。可 以很容易而可行地插入圈結線，因爲當第一肋和第二肋移 開日寸δ亥圈結線以一直線放入第一肋和第二肋之間。 5 — —種圈結線導線管形式的圈結線導線裝置反映了一圈 結線導線裝置的簡單實施例，該圈結線導線裝置當然地在 肋附近被中斷。根據本發明的該實施例使得一個相應的嵌 匕遽彳匕式線(gimp thread)導線裝置可以以一種嵌芯包纏 化式線導線管的形式設置在圈結線導線裝置附近而實際上 1〇沒有任何附加要求。 在縫紉操作中通常是固定的第一肋可形成在所述支架 的一個壁上，該壁是一個可折疊的蓋子，確保了容易的可 接近性並尤其是大大地便利了圈結線和可能的嵌芯包纏花 式線的插入。該蓋子是一種保護操作者不受該縫紉機的運 15動部件的傷害的防護裝置。另一方面，它確保了穿線的簡 單性和線拉出裝置的出色的可接近性。此外，該蓋子具有 關閉所述支架中的一個裝配孔以及使得該裝配孔可以被接 近的功能。被拉出的線位於一個封閉的空間中並因此受到 保護。 20 可送入的第二肋形成於可樞轉地支承在所述支架中的 一個線拉出桿上，所述線拉出桿可由一個線性驅動裝置驅 動樞轉，可送入的第二肋插入第一肋之間的插入深度是可 調節的，並且在支架和線拉出桿之間設置有一個調節螺 釘。该貫施例實現了一種非常簡單、緊湊和可靠的結構。 7 200413591 圖式簡單說明 本發明的詳細内容將從下文結合附圖對一個示例性實 施例的說明變得明顯，其中： 第1圖是一種圓頭鈕扣孔縫紉機的側視圖； 5 第2圖是沿第1圖的箭頭Π的該圓頭鈕扣孔縫紉機的正 視圖，200413591 发明, Description of the invention: [^^ 明 户 caterer's collar Field of the invention The present invention relates to a button 5 hole sewing machine for forming button hole seams in sewing material. L Prior Art Background of the Invention DE4110684C1 (corresponding to US5156103) describes a buttonhole sewing machine, especially an eye-type buttonhole sewing machine, including a 10 base plate, a top arm, and a connection between the base plate and the top Arm bracket. It also includes a needle bar that is drivably reciprocated up and down by a main drive motor, the needle bar having a needle and supported in the arm, and a sewing clamp that holds the sewing material. A hooking device for conveying a loop thread is provided in the substrate. It has a wire device which feeds the looped wire to the hook threading device along a feeding stroke through a wire puller provided at the looped wire feed stroke. The puller includes a suction device that cooperates with a vacuum generator for take-up at the tail end of the loop between the two buttonhole sewing processes. The disadvantage of this known device is that the loop wire can only be pulled out a short length. 20 Duerk〇PP Adler AG brochure "Service Guide 578" Issued March 1998 No. 0791578037 describes an electric wire drawing device for a round-head buttonhole sewing machine, by which the looped thread is pulled from a bobbin Pull down. A pivotable rod is provided, the end of which has an eyelet that guides the loop wire. The rod is pivoted by a pneumatically actuated piston-cylinder drive 5 device. The working speed of the rod can be adjusted by a throttle valve. The looped wire that is pulled out will expose the ship without inspection, which may cause self-tangling. This has the risk of creating a seam barrier. 1 The rod must have a considerable tangent rotation to pull the looped wire out of the required and «length. angle. If the rod must be pivoted at a relatively wide angle, the dimensions of the structure of the pneumatically-actuated piston-cylinder crane device operating as described above are required. On the one hand, the rod must be easily accessible for the looping of the loop; on the other hand, it must be difficult to stop any risk of injury. [Summary of the Invention 3 Summary of the Invention] It is an object of the present invention to provide a buttonhole sewing machine with a thread drawing device designed for trouble-free operation and simple structure. According to the present invention, the above object is achieved by a buttonhole sewing machine for generating a buttonhole seam in a sewing material. The buttonhole sewing machine includes: a base plate, a top arm, and a bracket connecting the base plate and the top arm. A needle 可 that can be reciprocated up and down by a main drive motor ▲ The needle bar has a needle and is supported in the arm; a sewing clamp; a fishing line device for holding a line provided inside the substrate A wire pull-out device is provided for feeding the loop wire to the wire of the hook hook device along the feed stroke. The thread pull-out device has a plurality of wire pull-out devices arranged at a certain distance from each other along the feed stroke. The first rib has a plurality of second ribs, the second ribs are arranged at a fixed distance from each other and can be fed into the first rib and inserted between the first cuts, so that the loop line can be zigzag The configuration is pulled out. Since the loop line is zigzag when pulled out, the first rib and the second rib feed toward each other without the need for a long line. With a sufficient number of ribs, only a few millimeters (stroke) is required. It is easy and feasible to insert the loop knot line because when the first rib and the second rib are moved away from the delta delta loop knot line to be inserted in a straight line between the first rib and the second rib. 5 — A loop-knotted wire device in the form of a loop-knotted wire conduit reflects a simple embodiment of a loop-knotted wire device which is of course interrupted near the ribs. This embodiment according to the present invention allows a corresponding gimp thread wire device to be arranged near the loop wire conductor device in the form of a core-wrapped wire conductor tube, which is actually 1 °. There are no additional requirements. The first rib, which is usually fixed during the sewing operation, may be formed on a wall of the bracket, which wall is a foldable cover, which ensures easy accessibility and especially greatly facilitates looping and possible Inserted core-wrapped fancy thread. The cover is a protective device that protects the operator from the moving parts of the sewing machine. On the other hand, it ensures the simplicity of threading and the excellent accessibility of the thread pull-out device. In addition, the cover has a function of closing a fitting hole in the bracket and making the fitting hole accessible. The drawn line is located in an enclosed space and is therefore protected. 20 The second rib that can be fed is formed on a wire pull-out lever that is pivotally supported in the bracket, and the wire pull-out lever can be driven to pivot by a linear drive device, and the second rib that can be fed in The insertion depth between the first ribs is adjustable, and an adjustment screw is provided between the bracket and the wire pull-out rod. This embodiment realizes a very simple, compact and reliable structure. 7 200413591 Brief description of the drawings The details of the present invention will become apparent from the following description of an exemplary embodiment with reference to the accompanying drawings, in which: FIG. 1 is a side view of a round-head buttonhole sewing machine; FIG. 2 is Front view of the round buttonhole sewing machine along arrow Π in FIG. 1,
第3圖是沿第2圖箭頭Π的該圓頭鈕扣孔縫紉機的支架 的後視圖， 第4圖是沿第3圖中支架的線IV-IV的垂直局部剖視圖； 10 第5圖是沿第4圖的箭頭V的支架的後蓋的視圖； 第6圖是沿第8圖的箭頭VI的一個線拉出桿的肋的局部 視圖， 第7圖是沿第6圖的箭頭ΥΠ的肋的側視圖； 第8圖當第4圖的線拉出裝置打開時的示意圖； 15 第9圖是線拉出裝置在其閉合的操作位置時的視圖；和FIG. 3 is a rear view of the bracket of the round-head buttonhole sewing machine taken along the arrow II of FIG. 2, and FIG. 4 is a vertical partial cross-sectional view taken along line IV-IV of the bracket in FIG. 3; View of the rear cover of the bracket of arrow V in FIG. 4; FIG. 6 is a partial view of the ribs of the rod drawn along a line of arrow VI in FIG. 8, and FIG. 7 is a rib along the arrow ΥΠ in FIG. Side view; FIG. 8 is a schematic view when the thread drawing device of FIG. 4 is opened; 15 FIG. 9 is a view of the thread drawing device in its closed operating position; and
第10圖是一個鈕扣孔的視圖。 t >δΓ 】 較佳實施例之詳細說明 如圖所示的圓頭鈕扣孔縫紉機包括一個成殼體形式的 20 基板1和一個頂臂2，這兩者通過一個支架3相互連接使縫紉 機通常具有一個C形的總體形狀。一個臂軸4支承在臂2内， 它可由一個設置在支架3中的主驅動馬達5通過一個皮帶驅 動裝置6驅動。一個具有一個針8的可驅動地上下往復運動 的針桿7通常由臂軸4驅動。 8 一個鈎線裝置旋轉支承10通常支承在一個在基板i内 的支承9上以旋轉致動，該旋轉支承1〇支承一個引導一根線 的鈎線裝置11。該鈎線裴置旋轉支承1〇還設有一個設置在 鈎線裝置11上方的切線裝置Ua。這種類型的切線裝置在 DE19531727C2(對應於US5647290)中進行了說明。〆個圈 結線導線管12和一個嵌芯包纏花式線導線管13從支架3頂 部通過支架3和基板1導入到鈎線裝置丨丨附近，尤其是如第 2圖所示。一圈結線14通過圈結線導線管12進給到鈎線裝置 11，而一嵌芯包纏花式線15可通過嵌芯包纏花式線導線管 13送入。一來自臂2頂部的上部線/針線16通常供給到針8。 在基板1上安裝有一個x-y滑台形式的可移動滑台17， 在忒滑$上女I 一縫料夾18，該縫料夾具有兩個其上安裝 有夾板2〇、2〇’的支承則9、⑼，通過該夾板將縫料21爽緊 在安裝在滑台17上的支承板22上。該種類型的縫料夾以的 結構和操作在DE10216809A中有說明。 在該縫紉機的背離操作者側23的後面24，支架3由一個 可以通過一個底部鉸接件26打開和關閉的蓋子25封閉，該 鉸接件沿y方向即水平地延伸。在該蓋子25上和支架3内設 置有-個線拉出裝置27，在開始鈕扣孔賴卫作之前通過 η亥線拉出裝置將圈結線14以及可能的喪芯包纏花式線邱 出足夠的罝。當關閉蓋子25時，該線拉出裝置27包括橫截 面爲梳子形狀結構的固定的第一肋28。它還包括可送入的 第二肋29，該第二肋29可插入肋28，從而使得在肋28、29 之間和周生-個曲折的線拉出通道3G，該通道3〇的寬 200413591 度a，以及因此該通道的整個長度可由肋29的送入幅度調節 。送入的可能性通過安裝在一個雙臂線拉出桿32的第一桿 臂31上的肋29完成，該雙臂線拉出桿設置在支架3中且可繞 一個沿y方向設置的軸33樞轉。軸33位於第一桿臂31的下方 5 。一個氣動致動的活塞-缸驅動裝置形式的線性驅動裝置35 作用於該桿32的第二桿臂34上，該第二桿臂34從轴33向下 延伸。該驅動裝置35的缸36牢固地安裝在第二桿臂34上。 一個空氣軟管37的開口進入缸36。可以在缸36中移動的活 塞38自身支承在支架3的一個後壁39上。壓縮空氣從一個未 1〇不出的氣源通過一個3/2通方向控制閥形式的電磁觸發的 闊40經由官37導入缸36。通過該縫紉機的中央控制系統41 觸發閥40。 15 20Figure 10 is a view of a button hole. t > δΓ】 Detailed description of the preferred embodiment The round buttonhole sewing machine shown in the figure includes a base plate 1 and a top arm 2 in the form of a housing, which are connected to each other through a bracket 3 to make the sewing machine usually Has a C-shaped overall shape. An arm shaft 4 is supported in the arm 2 and it can be driven by a main drive motor 5 provided in the bracket 3 via a belt drive 6. A needle bar 7 which can be driven up and down to reciprocate with a needle 8 is usually driven by an arm shaft 4. 8 A hooking device rotary support 10 is usually supported on a support 9 in a base plate i for rotational actuation, and the rotary support 10 supports a hooking device 11 which guides a thread. The hook thread Pei rotation support 10 is further provided with a thread cutting device Ua provided above the hook thread device 11. A thread trimmer of this type is described in DE19531727C2 (corresponding to US5647290). One loop of the lead wire conduit 12 and a core-wrapped fancy wire conduit 13 are introduced from the top of the bracket 3 through the bracket 3 and the base plate 1 to the vicinity of the hooking device, especially as shown in FIG. 2. A loop of knotted wire 14 is fed to the hooking device 11 through the looped wire conduit 12, and a core-wrapped fancy wire 15 can be fed through the core-wound fancy wire conduit 13. An upper thread / needle thread 16 from the top of the arm 2 is usually supplied to the needle 8. A movable slide table 17 in the form of an xy slide table is mounted on the base plate 1, and a sewing clamp 18 is provided on the slider 1. The sewing clamp has two clamps 20 and 20 'on which the clamps 20 and 20 are mounted. The support is 9 and ⑼, and the sewing material 21 is fastened on the support plate 22 mounted on the slide table 17 through the plywood. The structure and operation of this type of sewing material clamp are described in DE10216809A. At the rear face 24 of the sewing machine facing away from the operator side 23, the bracket 3 is closed by a cover 25 which can be opened and closed by a bottom hinge 26 which extends horizontally in the y direction. A thread pull-out device 27 is provided on the cover 25 and inside the bracket 3. Before starting the button hole Lai Wei, the loop wire 14 and the possible lost core wrapped fancy thread are pulled out by the η-hine thread pull-out device Enough. When the cover 25 is closed, the wire pull-out device 27 includes a fixed first rib 28 having a comb-shaped structure in cross section. It also includes a second rib 29 that can be inserted, which can be inserted into the rib 28, so that a zigzag line is drawn between the ribs 28, 29 and a zigzag line, the width of the channel 30 200413591 degrees a, and thus the entire length of the channel can be adjusted by the feeding amplitude of the rib 29. The possibility of feeding in is accomplished by a rib 29 mounted on the first lever arm 31 of a two-arm line pull-out lever 32 which is arranged in the bracket 3 and can be wound around an axis provided in the y-direction 33 pivots. The shaft 33 is located below the first lever arm 31. A linear drive 35 in the form of a pneumatically actuated piston-cylinder drive acts on a second lever arm 34 of the lever 32, which extends downwardly from the shaft 33. The cylinder 36 of the driving device 35 is firmly mounted on the second lever arm 34. An opening of an air hose 37 enters the cylinder 36. A piston 38, which can be moved in the cylinder 36, is itself supported on a rear wall 39 of the bracket 3. Compressed air is introduced into the cylinder 36 through a valve 37 from an air source that is not exhausted through an electromagnetically activated valve 40 in the form of a 3 / 2-way directional control valve. The valve 40 is triggered by the central control system 41 of the sewing machine. 15 20
在軸33上方後壁39上設置有一個調節螺釘42，在驅: 裝置35被壓縮空氣致動時，通過該調節螺釘來設定第一; ’31朝蓋子25_的範圍。換句話說，該調節螺釘42用; 调即可秋助可以插人肋28之間的深度，該深度決定彳 拉出通道30的見度a。在調節螺釘42和轴％之間設置一個 傾縮彈簧43，通_壓_簧在驅㈣置·力釋放I 使第；^31樞轉’從而使肋29與肋Μ脫開接合。 时在貝口ρ内側’盖子25具有兩個當該蓋子關閉時從後 免性地與-鶴45接合的保娜簧μ，朗成在支架 的内頂部。 成 在第3圖至第5圖的實施例中，一 單科，另一方面線拉出桿32和肋29形成 方面蓋子25和肋28形 個單 10 一部件，兩者都是例如由硬彈性塑膠材料製成的。蓋子25 的肋28通過沿z方向延伸的側板46彼此連接。這些側板牝沿 朝線拉出桿32的方向越過肋28伸出。 在根據第6圖和第7圖的一個可選實施例中，每一可送 入肋29’即線拉出桿32的每一肋在其最高點具有一個硬化 鋼銷47用作一種磨損保護件，該銷47以其兩端部保持在兩 個保持肋48中，該保持肋48在其端部限定肋29,，並又以與 肋29’相同的方式和線拉出桿32一體地做成。在保持肋牝和 刀別相關聯的肋29之間具有自由切割/沖切部49。它們有助 於使肋48獲得彈性的撓性，由此使得可以插入鋼銷47。同 樣地’肋28可以沿它們的最高點設置這種類型的硬化鋼銷 作爲一種抗磨損保護裝置。 如第8圖和第9圖並結合第3圖所示，如下所述拉出圈結 線14以及可能的嵌芯包纏花式線15 : 線14、15位於在線拉出裝置27附近中斷的導線管12、 13中。在蓋子25打開時圈結線14以及可能的嵌芯包纏花式 線15已插入到導線管12、13中。當關閉蓋子25並打開裝置 27即線拉出桿32向後樞轉時，圈結線12和嵌芯包纏花式線 13位於肋28的前面並且是平滑和直的，如第8圖所示。調節 螺釘42的對應調節決定在關閉裝置27時肋29或29,將以寬 度a移入肋28之間的深度。爲了將線拉出，閥4〇由控制系統 41短暫地觸發以使得線拉出桿32從其靜止位置樞轉至操作 位置。可送入的肋29和29，移入肋28之間從而拉線。第9圖 示出彎曲地拉進裝置27中而沒有在通道30中夾住的圈結線 200413591 14以及可能的嵌芯包纏花式線15。當線拉出裝置27通過驅 動裝置35的壓力釋放而打開時，可以得到大致對應於肋28 和29或29’的總數目乘以寬度a的一段圈結線14以及可能的 嵌芯包纏花式線15。該線的拉出長度爲80-100毫米。在打 5 開線拉出裝置27後，圈結線14以及可能的嵌芯包纏花式線 15將通過摩擦力保持在由肋28和側板46形成的通道内；它 停留在其限定的線位置，但可以被用完。 一線拉出過程可以在縫製一個鈕扣孔51的線縫50之前 進行，或者在縫製和通過切線裝置11a切斷線13、14、16的 10 加工之間進行。 t圖式簡單說明】 第1圖是一種圓頭鈕扣孔縫紉機的側視圖； 第2圖是沿第1圖的箭頭Π的該圓頭鈕扣孔縫紉機的正 視圖， 15 第3圖是沿第2圖箭頭Π的該圓頭鈕扣孔縫紉機的支架 的後視圖， 第4圖是沿第3圖中支架的線IV-IV的垂直局部剖視圖； 第5圖是沿第4圖的箭頭V的支架的後蓋的視圖； 第6圖是沿第8圖的箭頭VI的一個線拉出桿的肋的局部 20 視圖； 第7圖是沿第6圖的箭頭W的肋的側視圖； 第8圖當第4圖的線拉出裝置打開時的示意圖； 第9圖是線拉出裝置在其閉合的操作位置時的視圖；和 第10圖是一個鈕扣孔的視圖。 12 200413591 【圖式之主要元件代表符號表】 1…基板 2…頂臂 3…支架 4…臂轴 5···驅動馬達 6···驅動裝置 7…針桿 8…針 9…支承 10…旋轉支承 11…釣線裝置 11a···切線裝置 12…圓結線導線管 13…花式線導線管 14…圈結線 15…花式線 16…針線 17…滑台 18…縫料爽 19、 19’…支承桿 20、 20’…夾板 21…缝料 22…支承板 23…側 24…後面 25…蓋子 26…底部鉸接件 27…拉出裝置 28…第一肋 29…第二肋 29’···肋 30…通道 31…第一桿臂 32…拉出桿 33···車由 34…第二桿臂 35…線性驅動裝置 36···缸 37…管 38…活塞 39…後壁 40…閥 41…中央控制系統 42…調節螺釘 43…壓縮彈簧 44…保持彈簧An adjustment screw 42 is provided on the rear wall 39 above the shaft 33. When the driving device 35 is actuated by compressed air, the adjustment screw is used to set the first; ′31 is in the range of the cover 25_. In other words, the adjusting screw 42 is used to adjust the depth that Qiu Zhu can be inserted between the ribs 28, which depth determines the visibility a of the channel 30 being pulled out. A tilting spring 43 is provided between the adjusting screw 42 and the shaft%, and the pressure spring releases the driving force and releases the force I; ^ 31 pivots' to disengage the rib 29 from the rib M. At the inner side of the bayonet ', the cover 25 has two Poona springs µ which are freely engaged with -Crane 45 from the rear when the cover is closed, and is formed on the inner top of the bracket. In the embodiment of FIGS. 3 to 5, a single branch, on the other hand, the wire pull rod 32 and the rib 29 form a cover 25 and a rib 28 form a single 10, both of which are made of, for example, hard Made of elastic plastic material. The ribs 28 of the cover 25 are connected to each other by a side plate 46 extending in the z-direction. These side plates 伸出 extend beyond the ribs 28 in a direction where the rod 32 is pulled out in a line. In an alternative embodiment according to FIGS. 6 and 7, each of the ribs 29 ′ that can be fed in, that is, each rib of the wire pull rod 32 has a hardened steel pin 47 at its highest point as a kind of wear protection. The pin 47 is retained in its two ends in two retaining ribs 48 which define ribs 29 at its ends and is integrated with the wire pull-out lever 32 in the same manner as the ribs 29 '. Made. There is a free cutting / punching portion 49 between the holding ribs and the ribs 29 associated with the blade. They help to give the ribs 48 elastic flexibility, thereby making it possible to insert the steel pin 47. Similarly, the ribs 28 may be provided with hardened steel pins of this type along their highest points as an anti-wear protection device. As shown in Figs. 8 and 9 in combination with Fig. 3, pull out the loop-knot wire 14 and the possible core-wound fancy wire 15 as follows: The wires 14, 15 are located in the vicinity of the wire-pulling device 27, the broken wire In tubes 12,13. When the cover 25 is opened, the loop wires 14 and possibly the core-wrapped fancy wires 15 have been inserted into the conduits 12,13. When the cover 25 is closed and the device 27, that is, the wire pull-out lever 32 is pivoted rearward, the looped wire 12 and the core-wrapped fancy wire 13 are located in front of the rib 28 and are smooth and straight, as shown in FIG. The corresponding adjustment of the adjustment screw 42 determines the depth of the ribs 29 or 29 that will move into the ribs 28 by a width a when the device 27 is closed. To pull the wire out, the valve 40 is briefly triggered by the control system 41 to cause the wire pull-out lever 32 to pivot from its rest position to the operating position. The feedable ribs 29 and 29 are moved between the ribs 28 to draw a line. Figure 9 shows a looped wire 200413591 14 that is pulled into the device 27 without being clamped in the channel 30 and a possible core-wound fancy wire 15. When the thread pull-out device 27 is opened by the pressure release of the driving device 35, a loop of knot wire 14 and a possible core-wrap pattern approximately corresponding to the total number of ribs 28 and 29 or 29 'multiplied by the width a can be obtained. Line 15. The wire has a pull-out length of 80-100 mm. After hitting the 5 open-wire pull-out device 27, the looped wire 14 and possibly the core-wrapped fancy wire 15 will be held by friction in the channel formed by the rib 28 and the side plate 46; it stays in its defined line position , But can be used up. The one-line drawing process may be performed before the seam 50 of one button hole 51 is sewn, or between the sewing and the 10 processing of cutting the threads 13, 14, 16 by the thread cutting device 11a. Brief description of t diagram] Fig. 1 is a side view of a round-head buttonhole sewing machine; Fig. 2 is a front view of the round-head buttonhole sewing machine taken along the arrow II of Fig. 1; FIG. 4 is a rear view of the bracket of the round-head buttonhole sewing machine of arrow II, and FIG. 4 is a vertical partial sectional view taken along line IV-IV of the bracket of FIG. 3; FIG. 5 is a view of the bracket of arrow V of FIG. View of the rear cover; Figure 6 is a partial 20 view of the ribs of the rod drawn along a line of arrow VI of Figure 8; Figure 7 is a side view of the ribs along arrow W of Figure 6; Figure 8 when Fig. 4 is a schematic view of the thread drawing device when it is opened; Fig. 9 is a view of the thread drawing device in its closed operating position; and Fig. 10 is a view of a button hole. 12 200413591 [Representative symbols for the main components of the drawing] 1 ... substrate 2 ... top arm 3 ... bracket 4 ... arm shaft 5 ... driving motor 6 ... driving device 7 ... needle bar 8 ... pin 9 ... support 10 ... Rotary support 11 ... fishing line device 11a ... cutting device 12 ... round knot conduit 13 ... fancy conduit 14 ... loop knot 15 ... fancy thread 16 ... needle thread 17 ... slide table 18 ... sewing material cool 19, 19 '... support bar 20, 20' ... plywood 21 ... sewing material 22 ... support plate 23 ... side 24 ... rear 25 ... cover 26 ... bottom hinge 27 ... drawing device 28 ... first rib 29 ... second rib 29 '· ·· Rib 30 ... Channel 31 ... First lever arm 32 ... Pull-out lever 33 ... · Car consists of 34 ... Second lever arm 35 ... Linear drive 36 ... Cylinder 37 ... Pipe 38 ... Piston 39 ... Rear wall 40 ... valve 41 ... central control system 42 ... adjustment screw 43 ... compression spring 44 ... holding spring
13 200413591 45···肋 46…側板 47…硬化鋼銷 48···肋 49…沖切部 50…線縫 51···紐扣孔 a···寬度13 200413591 45 ... Rib 46 ... Side plate 47 ... Hardened steel pin 48 ... Rib 49 ... Punching section 50 ... Seam 51 ... Button hole a ... Width
1414