200530452 九、發明說明： 【号务明戶斤屬支冬餘々貝j 發明領域 本發明涉及一種缝紉機，它包括：一針，該針可由一 • 5臂轴以上下往復驅動，並且可沿一針線供應方向向該針傳 / 送針線；一與該針配合的線鈎；一在針線供應方向上位於 • 針的上游以引導針線的挑線桿；一不合袼/故障線迹(faulty stitch)檢測裝置，該檢測裝置用於産生基於與臂軸轉動角有 關的針線張力的電信號；以及一用於根據該電信號和臂轴200530452 IX. Description of the invention: [No. Wuminghujin belongs to Zhidongyuyubei j. Field of the Invention The present invention relates to a sewing machine, which includes: a needle, which can be reciprocated by a 5-arm shaft above and below, and can be driven along a Needle thread supply direction to the needle / feed needle thread; a thread hook that cooperates with the needle; a thread take-up lever located upstream of the needle in the needle thread supply direction to guide the needle thread; a faulty / faulty stitch A detection device for generating an electrical signal based on needle thread tension related to the rotation angle of the arm shaft; and a detection device for generating an electrical signal based on the electrical signal and the arm shaft
10 轉動角度産生一控制信號的微處理器。 t jttr U 發明背景 us專利4170951公開了一種在緊線器和挑線桿之間設 置有-線張力檢測裝置的縫匆機。該裝置基本上由一向下 15開口的U形偏轉器組成，同時該偏轉器保持有應變儀。來自 • 線器的針線被偏轉明顯大於9〇。的角，然後將其重新導向 挑線桿，從挑線桿處基本上沿一直線將針線引向針。應變 儀應根據針線的張力產生對應於針線張力的電壓丨通過 . ㈣器對所述電壓進行處理，從而可發現不合格的線迹: .20這種已知的設計至少是非常不精確且不可靠的。 C發明内容3 發明概要 本發明的一個目的是，这趕者 4樣貝現所述類型的縫紉機， 以便能夠可靠且容易地識別出不合格線迹或斷開的線。 200530452 根據本發明，該目的通過以 線迹檢測m置在從挑線杆到針⑹/所述不合格 將根據針線張力産生的電壓與'給/線:徑上；設置有 較的裝置。由於不合格線迹檢測堡曲線相比 間，不會出現由挑線杆内的(針=在針和挑線杆之 的錯誤_。在臂_整個旋轉過程=1的對針線張力 產生的電壓與給定的額定電壓據::針線張力 偏差，將料-信職赠崎據相應的（電星） 10 :不合格線迹檢測裝置包括—導線孔以 時，在檢測針線張力時可排除由偏轉引起的任何㈣二 中所述導線孔料針雜且可根據針雜力基本上ς向ς 針線的主方向彈性地偏轉，所述感測器檢測所述導線孔的 任何偏移運動。 一特別優選的針線張力的非接觸檢測實施例在於：將 15 -永磁體配設給導線孔，所述導線孔可在該永磁體的磁場 中移動；m檢測磁場變化並産生代表這些變化的信 號。其進-步的改進包括以下特徵：所述導線孔設置在: 蝶形/支腿彈簧上；感測器爲—霍爾發生器；蝶形彈菁和導 線孔-起設置在-彈簧箱中；所述導線孔、感測器和永磁 20 體安裝在一共同的支承板上。 圖式簡單說明 從下面結合附圖對一示例性實施例的說明中，本發明 的其他特徵、優點以及細節將變得明顯，其中·· 第1圖爲一縫紉機的縱向側視圖； 200530452 第2圖是與第1圖相比比例擴 的俯視圖； 勺不合袼線迹檢測裝 置 第3圖是不合格線迹檢測裝置按第2 圖 圖中箭頭III的側視 第4圖是兩塊已縫合的縫料的剖視圖； 於臂軸旋轉角繪製的對應於針線張力的電 Μ的額定曲線圖；和10 Microprocessor that generates a control signal by turning the angle. t jttr U Background of the invention US patent 4171951 discloses a sewing machine provided with a thread tension detecting device between a thread tensioner and a thread take-up lever. The device basically consists of a U-shaped deflector with 15 openings down, while the deflector holds a strain gauge. Needle thread from the threader is deflected significantly greater than 90. Angle, and then redirect it to the thread take-up lever, and from the thread take-up lever, basically guide the needle thread to the needle along a straight line. The strain gauge should generate a voltage corresponding to the tension of the needle thread according to the tension of the needle thread. The voltage is processed by the ㈣ device so that unqualified stitches can be found: .20 This known design is at least very inaccurate and not accurate. reliable. C Summary of the Invention 3 Summary of the Invention An object of the present invention is to make a sewing machine of the type described in order to reliably and easily identify unqualified stitches or broken threads. 200530452 According to the present invention, the purpose is to place the voltage from the thread take-up lever to the needle loop / the unsatisfactory by detecting stitches with stitches. The voltage generated according to the needle thread tension is compared to the 'feed / thread: diameter'; a comparative device is provided. Due to the unqualified stitch detection comparison curve, the voltage generated by the needle take-up lever (needle = error between the needle and the take-up lever _. In the arm _ entire rotation process = 1) With the given rated voltage data: Needle thread tension deviation, the corresponding material-credit donation (correspondence) 10: Unqualified stitch detection device includes-when the wire hole is used, it can be excluded when testing the needle thread tension Any deflection caused by the deflection of the wire hole material in the second one can be basically deflected elastically toward the main direction of the needle thread according to the force of the deflection, and the sensor detects any offset movement of the wire hole. A particularly preferred embodiment of non-contact detection of needle thread tension is that 15-permanent magnets are assigned to wire holes that can move in the magnetic field of the permanent magnet; m detects changes in the magnetic field and generates signals representative of these changes. Its further improvement includes the following features: the wire hole is provided on: a butterfly / leg spring; the sensor is a Hall generator; the butterfly spring and the wire hole are set in a spring box ; The wire hole, the sensor and the permanent magnet 20 body Installed on a common support plate. Brief description of the drawings From the following description of an exemplary embodiment in conjunction with the drawings, other features, advantages and details of the present invention will become apparent. Longitudinal side view of the sewing machine; 200530452 Figure 2 is a plan view enlarged in comparison with Figure 1. Figure 3 is a side view of a defective stitch detection device according to arrow III in Figure 2. Figure 4 is a cross-sectional view of two pieces of suture material that have been stitched; a rated curve of the electric voltage corresponding to the needle thread tension plotted on the rotation angle of the arm axis; and
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第6圖是〜信號處理的示意圖。 【實施冷式】 幸父佳實施例之詳細說明 如第1圖所*，縫初機通常包括—頂婀、一殼體型的 土板2以及；^桂3 ’該立柱3在其兩端處分別與頂臂工和基 ^相連，使得縫幼機成爲C形。一臂軸4位於頂臂納，該 臂轴4位於頂臂丨外_端部支承—手輪5，—動量傳遞裝= 6在手輪5旁邊安裝在臂轴4上。對—帶有—針8的針桿7和— 壓腳9的致動通常來自於臂軸4。 一垂直線鈎/擺梭10位於基板2内以圍繞一線鈎支承件 12的一垂直軸線U旋轉。通過一在基板2内設置在立柱3下 的驅動馬達13經由一線鈎驅動軸μ對線鈎進行致動。 2〇該線鈎驅動軸14還通過一帶傳動裝置15來致動臂軸4。 頂臂1還保持有一同樣由臂軸4驅動的針線17的挑線桿 16。沿-針線供給方向18由-斜線供應源(未示出）向挑線桿 6仏給針線17 ;該供給經由一在方向18上位於挑線桿μ上 游的緊線器19進行。緊線器19安裝在一由鐵磁性材料例如 200530452 鋼製成的支承板20上，該支承板2〇固定在頂臂丨上。經由緊 線器19和挑線桿16將針線17供應到一不合格線迹檢測裝置 21 ’亚從此處將其導向針8。不合格線迹檢測裝置以也安裝 在支承板20上。 5 如第2和3圖所示，不合格線迹檢測裝置21包括一安裝 •在支承板2〇上並利用一螺釘24保持著一蝶形彈簧〇吆 . δΡηηΕ)23的彈簧箱22。蝶形彈簧23通過彈簧箱的一縫隙乃 • 從该彈簧箱22中突出，該縫隙25開口基本向下並朝向與針 線17相對的一側。在彈簧箱22外部，蝶形彈簧23在其底部 ίο端上設有-導線孔26。一頂部引線器27和一底部引線器^ 安裝在支承板21上，它們總體上在不合格線迹檢測裝置以 的側部並分別位於該檢測裝置21的上方和下方；來自挑線 才干16的針線17被基本上沒有任何偏轉地由引線器27、u引 向針8。如第1至3圖所示，在兩個引線器27、28之間，針線 I5 17穿過不合格線迹檢測裝置21的導線孔％。如第顶所示， • 一偏轉銷29位於縫隙25内，以在蝶形彈簧23反轉時與孔26 一起使針線17偏轉。 • 在彈黃箱22下方，一由不可磁化的材料尤其是塑膠材 料製成的感測器箱30通過埋頭螺釘3丨安裝在支承板2〇上。 20 -永磁體32設置在感測器箱3〇内，並且與導線孔％和由 鋼一從而是鐵磁性可磁化的材料一組成的蝶形彈簧巧的 (與導線孔26)相鄰的區域相重疊。當導線孔％基本上橫向於 由引線器27、28的位置給定的針線17主方向33偏移時，該 導線孔26在永磁體32前方近似橫穿該永磁體32從磁極34、 200530452 35延伸的磁場地移動。如第3圖所示，磁極34朝向導線孔％ 並離它彳艮近。 除永磁體32外，感測器箱30還設有一回應磁場變化的 • 感測器36，其通常爲一霍爾發生器。該感測器36經由一線 . 5路37連接到一控制系統38的一輸入端。控制系統％連接到 供電幹、線39,並且具有-連接到縫勿機踏板(未示出）的連接 線40 。亥控制系統經由一線路41連接到動量發送器6。最 • 後，控制系統38經由一控制線路42連接到驅動馬達13。控 制系統3 8通常設有開關43和控制燈44。 1〇 下面結合第4至6圖對操作模式進行說明： 通過操縱開關43致動驅動馬達13，並利用踏板使縫切 機運行。例如將兩塊縫料45、46縫合到一起。第示出縫 料45、46上的三個線迹位置，從左至右爲··—正確線迹47、 不口格的線迹位置48以及另—正確線迹49。在正確線迹 15 47、49中間沒有形成線迹，這表明線鈎_末端別沒有釣 • ㈣從而抽出針線17或者其_，而且沒有將針線Π繞在 Ά鈎1G内且包括底線51儲備量的線軸(未示出） • 弓1導。在針線17和底線51(第4圖中概略示出）之間沒有形成 線迹。 2〇 如上面所概述的，在_工作過程中，導線孔26以及 (與其)相_蝶轉簧23的區域在永磁體Μ前方在磁場内 和動胃針線17的張力最大時，該針線在如第2圖中虛線概 略丁出的其取明顯的拉伸位置位於不合格線迹檢測裝置U 附近。然而#針線17的張力最小時，它處在第2圖中實線所 200530452 示的位置’此時蝶形彈簧23支料彈簧箱22的—止肋 上。針線17以一橫向於由引線器28、29給定的針線的主方 向的三角形形狀被抽出。針線張力越大，第2圖中所示的該 二角形的（頂）角越純。 5 《測㈣根據蝶形彈簧23和導線孔26在永磁體32的磁 . 場中的運動提供一電助。如第5圖所示-其中在臂軸4旋轉 周的旋轉角W_L緣製出由感測器36傳送到控制系統％的 • MU，當挑線桿16處在升起位置並且當針線17的張力最大 時’由感測器36提供的電壓m最大。隨著挑線桿16在縫合 過程中下降’電壓降到—㈣低的值仍。當針仙基本上 完全鬆他且蝶形彈簧23貼靠在止擋Μ上時即當針S已經縫 穿縫料45、46然後再次向上移動時，提供所述電前2。當 線釣1〇的末端50鈎住由針8的向上移動所形成的針線線圈 時，針線Π被再次拉緊，即導線孔％從其在止撞^上的位 15置在第2圖中向右偏移，這是因爲針線17被提高的張力拉 鲁 伸L使電壓U上升至-值U3。隨著針線線圈脫離線鈎1〇 的末端5〇 ’電壓再次下降到前2，直至挑線桿16再次向上 .夕動二拉緊針線直至挑線桿在臂軸4旋轉以及由此針S完 _ 奸起⑽轉再:欠處於升起位置錄緊針線17，由此電 2〇壓再次^升到值m。上述電壓曲線反映了電壓的額定值。 士第6圖所不’在控制系統38的微處理器53中處理由感 測器贿供的電壓以及來自動量發送器6並代表臂軸4旋轉 角社#\如果第5圖所示的電壓⑽線傳送到了微處理器 53則所&成的線迹就是正確的。電壓實際值符合額定值。 200530452 微處理器53不取山/ , 從U2到議^、*可信號。然而，如果感測器36沒有將 ’电璧中間上升傳送賴處理扣，則表明沒有 形成線迹。電1實際值與額定值仰符。在這種情況下， 微處理器53發出一相應的信號使得控制系統38將驅動馬達 13停止，並在必要時使控制燈44閃爍。如果針線17斷開， 則感測器S6的電肺持續下降到值m ’這也使縫幼機停 止，因爲電塵實際值再次偏離了額定值。Fig. 6 is a schematic diagram of ~ signal processing. [Implementing the cold type] Fortunately, the detailed description of the embodiment of Xingfujia is as shown in Figure 1. The initial seam machine usually includes a top slab, a shell-shaped soil plate 2 and ^ gui 3 'The column 3 is disposed at its two ends. Do not connect with the top arm worker and the base ^, so that the sewing machine becomes C-shaped. One arm shaft 4 is located on the top arm, and the arm shaft 4 is located on the top arm. The outer end—the hand wheel 5—the momentum transmission device = 6 is installed on the arm shaft 4 beside the hand wheel 5. The actuation of the needle bar 7 with the needle 8 and the presser foot 9 usually comes from the arm shaft 4. A vertical hook / swing shuttle 10 is located in the base plate 2 to rotate about a vertical axis U of a hook support 12. The wire hook is actuated by a drive motor 13 provided under the column 3 in the base plate 2 via a wire hook drive shaft µ. 20 The wire hook drive shaft 14 also actuates the arm shaft 4 through a belt drive 15. The top arm 1 also holds a thread take-up lever 16 for a needle thread 17 which is also driven by an arm shaft 4. In the -needle thread supply direction 18, the needle thread 17 is fed to the thread take-up lever 6 from a -slant supply source (not shown); the supply is performed via a thread tensioner 19 located upstream of the thread take-up lever µ in the direction 18. The thread tensioner 19 is mounted on a support plate 20 made of ferromagnetic material such as 200530452 steel, and the support plate 20 is fixed on the top arm 丨. The needle thread 17 is supplied to a defective stitch detection device 21 'via the thread tensioner 19 and the thread take-up lever 16 and is guided to the needle 8 from here. The defective stitch detection device may be mounted on the support plate 20 as well. 5 As shown in Figs. 2 and 3, the non-conforming stitch detection device 21 includes a spring box 22 mounted on a support plate 20 and holding a butterfly spring 0 吆 .δPηηE) 23 with a screw 24. The butterfly spring 23 passes through a gap in the spring case, and protrudes from the spring case 22. The slit 25 opens substantially downward and faces the side opposite to the needle thread 17. Outside of the spring case 22, a butterfly spring 23 is provided with a lead hole 26 on the bottom end thereof. A top leader 27 and a bottom leader ^ are installed on the support plate 21, and they are generally on the side of the defective stitch detection device and located above and below the detection device 21 respectively; The needle thread 17 is guided to the needle 8 by the guides 27, u without any deflection. As shown in Figs. 1 to 3, between the two leaders 27, 28, the needle thread I5 17 passes through the wire hole% of the defective stitch detection device 21. As shown at the top, a deflection pin 29 is located in the gap 25 to deflect the needle thread 17 together with the hole 26 when the butterfly spring 23 is reversed. • Below the yellow box 22, a sensor box 30 made of a non-magnetizable material, especially a plastic material, is mounted on the support plate 20 by a countersunk screw 3 丨. 20-The permanent magnet 32 is arranged in the sensor box 30 and is adjacent to the wire hole% and a butterfly spring (area which is adjacent to the wire hole 26) composed of steel-and thus a ferromagnetic magnetizable material. Mutual overlap. When the wire hole% is substantially transverse to the main direction 33 of the needle thread 17 given by the positions of the lead devices 27, 28, the wire hole 26 approximately traverses the permanent magnet 32 in front of the permanent magnet 32 from the magnetic pole 34, 200530452 35 The extended magnetic field moves. As shown in FIG. 3, the magnetic pole 34 faces toward the wire hole% and is close to it. In addition to the permanent magnet 32, the sensor box 30 is also provided with a sensor 36 that responds to changes in the magnetic field, which is usually a Hall generator. The sensor 36 is connected to an input terminal of a control system 38 via a line. The control system is connected to the mains line 39, and has a connection line 40 connected to a sewing machine pedal (not shown). The control system is connected to the momentum transmitter 6 via a line 41. Finally, the control system 38 is connected to the drive motor 13 via a control line 42. The control system 38 is generally provided with a switch 43 and a control lamp 44. 1〇 The operation modes are described below with reference to FIGS. 4 to 6: The driving motor 13 is actuated by operating the switch 43 and the sewing machine is operated by using a pedal. For example, two pieces of sewing material 45, 46 are sewn together. The three stitch positions on the stitching materials 45 and 46 are shown from left to right: a correct stitch 47, a snap stitch position 48, and another—correct stitch 49. There is no stitch in the middle of the correct stitch 15 47, 49, which indicates that the hook _ end is not fishing • ㈣ so that the needle thread 17 or its _ is pulled out, and the needle thread Π is not wound in the hook 1G and includes the reserve of the bottom thread 51 Spool (not shown) • Bow 1 guide. No stitch is formed between the needle thread 17 and the lower thread 51 (shown schematically in Fig. 4). 2〇 As outlined above, during the working process, the area of the wire hole 26 and the (phase) butterfly spring 23 is in front of the permanent magnet M in the magnetic field and when the tension of the stomach needle 17 is greatest, the needle is at As shown in FIG. 2, the drawn position is clearly located near the unqualified stitch detection device U. However, when #needle thread 17 has the smallest tension, it is in the position shown by the solid line in Figure 2 200530452. At this time, the butterfly spring 23 is on the stop rib of the spring box 22. The needle thread 17 is drawn in a triangular shape transverse to the main direction of the needle thread given by the lead devices 28, 29. The greater the needle thread tension, the purer the (top) angle of this diagonal as shown in Figure 2. 5 "Testing provides an electric assistance based on the movement of the butterfly spring 23 and the wire hole 26 in the magnetic field of the permanent magnet 32. As shown in Figure 5-where the rotation angle W_L at the rotation axis of the arm shaft 4 is produced by the sensor 36 to the control system. MU, when the thread take-up lever 16 is in the raised position and when the needle thread 17 When the tension is maximum, the voltage m provided by the sensor 36 is maximum. As the thread take-up lever 16 drops during the stitching process, the voltage drops to a low value. The electric front 2 is provided when the needle fairy is loosened completely and the butterfly spring 23 is abutted against the stop M, that is, when the needle S has been sewn through the sewing material 45, 46 and then moved upward again. When the end 50 of the line fishing 10 hooks the needle thread coil formed by the upward movement of the needle 8, the needle thread Π is tightened again, that is, the wire hole% is placed in the second figure from its position 15 on the stop ^ It is shifted to the right because the raised tension L of the needle thread 17 increases the voltage U to a value of U3. With the needle thread coil detaching from the end of the thread hook 10, the voltage 50 ′ drops to the top 2 again, until the thread take-up lever 16 rises again. Xixi Second tightens the needle thread until the thread take-up lever rotates on the arm shaft 4 and the needle S finish _ Raising and turning again: The needle thread 17 is tightly held in the raised position, and the electric pressure of 20 is raised to the value m again. The above voltage curve reflects the rated value of the voltage. Figure 6 shows the processing of the voltage supplied by the sensor in the microprocessor 53 of the control system 38 as well as the automatic transmitter 6 and representing the arm axis 4 rotation angle agency # If shown in Figure 5 The voltage trace transmitted to the microprocessor 53 is correct. The actual voltage value corresponds to the rated value. 200530452 The microprocessor 53 does not take the signal / from U2 to ^, *. However, if the sensor 36 does not transfer the electric riser to the handle, it indicates that no stitch is formed. The actual value of electricity 1 corresponds to the rated value. In this case, the microprocessor 53 sends a corresponding signal to cause the control system 38 to stop the drive motor 13 and flash the control lamp 44 if necessary. If the needle thread 17 is disconnected, the electric lung of the sensor S6 continues to drop to the value m ', which also stops the sewing machine, because the actual value of the electric dust again deviates from the rated value.
【圖式簡單說明】 第1圖爲/縫幼機的縱向側視圖； 10 第2圖是與第1圖相比比例擴大的不合袼線迹檢測裝置 的俯視圖； 第3圖是不合格線迹檢測裝置按第2圖中箭頭砠的側視 圖； 第4圖是雨塊已縫合的縫料的剖視圖； 15 第5圖是關於臂軸旋轉角繪製的對應於針線張力的電 壓的額定曲線圖；和 第6圖是，信號處理的示意圖。 【主要元件符號說明】 7···針桿 8 · · ·針 9···壓腳 1…頂臂 2…基板 3…主桎 4…臂轴 5…手輪 6···傳量傳遞裝置 10…垂直線鈎/擺梭 11…垂直軸線 12…線鈎支承件 200530452 13…驅動馬達 14…線釣驅動轴 15…傳動裝置 16…挑線桿 17…針線 18···方向 19…緊線器 20…支承板 21…線迹檢測裝置 22…彈簧箱 23…蝶形彈簧 24…螺釘 25…缝隙 26…導線孔 27,28···引線器 29…偏轉銷 30…感測器箱 31…埋頭螺釘 32···磁體 33···主方向 36…傳感器 37…線路 38…控制系統 39…供電幹線 40…連接線 41…線路 42…控制線路 43…開關 44…控制燈 45,46···縫料 47,49…正確線迹 48…線迹位置 50…末端 51…底線 52···止擔 53…微處理器 12[Brief description of the drawings] Figure 1 is a longitudinal side view of the sewing machine; 10 Figure 2 is a top view of a mismatch stitch detection device with an enlarged scale compared to Figure 1; Figure 3 is a disqualified stitch The side view of the detection device according to the arrow 砠 in Fig. 2; Fig. 4 is a cross-sectional view of the sewn material of the rain block; 15 Fig. 5 is a rated curve of the voltage corresponding to the needle thread tension drawn about the rotation angle of the arm shaft; Fig. 6 is a schematic diagram of signal processing. [Description of main component symbols] 7 ··· Needle bar 8 · · · Needle 9 ··· Presser foot 1 ... Top arm 2 ... Substrate 3 ... Main shaft 4 ... Arm shaft 5 ... Hand wheel 6 ... 10… vertical thread hook / shuttle 11… vertical axis 12… thread hook support 200530452 13… drive motor 14… line fishing drive shaft 15… drive 16… thread take-up lever 17… needle thread 18 ... direction 19 ... tighten thread Device 20 ... support plate 21 ... stitch detection device 22 ... spring box 23 ... butter spring 24 ... screw 25 ... slot 26 ... lead hole 27,28 ... leader 29 ... deflection pin 30 ... sensor box 31 ... Countersunk screw 32 ... Magnet 33 ... Main direction 36 ... Sensor 37 ... Line 38 ... Control system 39 ... Power supply line 40 ... Connection line 41 ... Line 42 ... Control line 43 ... Switch 44 ... Control lamp 45, 46 ... · Sewing material 47, 49 ... Correct stitch 48 ... Stitch position 50 ... End 51 ... Bottom line 52 ... Stop load 53 ... Microprocessor 12