TW201726999A - Method for generating initial top thread of stitch and components used for implementing thereof generating a stitch's initial section of an expected stitch extension part that at most 10mm long - Google Patents
Method for generating initial top thread of stitch and components used for implementing thereof generating a stitch's initial section of an expected stitch extension part that at most 10mm long Download PDFInfo
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- TW201726999A TW201726999A TW105138395A TW105138395A TW201726999A TW 201726999 A TW201726999 A TW 201726999A TW 105138395 A TW105138395 A TW 105138395A TW 105138395 A TW105138395 A TW 105138395A TW 201726999 A TW201726999 A TW 201726999A
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B59/00—Applications of bobbin-winding or -changing devices; Indicating or control devices associated therewith
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B49/00—Take-up devices, e.g. levers, for the needle thread
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/08—Loop takers, e.g. loopers for lock-stitch sewing machines
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
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- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
Description
發明領域 本發明涉及一種用於產生具有最高10mm的預期線跡伸出部的線跡起始面線的方法。本發明還涉及一種用於實施這種方法的組件和具有這種組件的縫紉機。FIELD OF THE INVENTION The present invention relates to a method for producing a stitch starting face line having an intended stitch extension of up to 10 mm. The invention also relates to an assembly for carrying out such a method and a sewing machine having such an assembly.
發明背景 由EP 1 847 641 B1、DE 102 34 251 C1、DE 10 2006 019 193 A1和DE 101 23 075 C1公開了這種縫紉機。BACKGROUND OF THE INVENTION Such a sewing machine is known from EP 1 847 641 B1, DE 102 34 251 C1, DE 10 2006 019 193 A1 and DE 101 23 075 C1.
發明概要 本發明的目的是，提出一種方法，利用該方法實現了具有期望的、短預期線跡伸出部的線跡起始面線。利用這種方法希望實現，以盡可能大的可靠性避免：從經縫紉的縫料部分的可見側能看到起始線伸出縫料部分的邊緣外。SUMMARY OF THE INVENTION It is an object of the invention to provide a method by which a stitch starting face line having a desired, short expected stitch extension is achieved. With this method it is desirable to achieve with as much reliability as possible: from the visible side of the sewn seam portion, it can be seen that the starting line protrudes beyond the edge of the seam portion.
該目的根據本發明通過具有在請求項1中提出的特徵的方法實現。This object is achieved according to the invention by a method having the features presented in claim 1.
根據本發明認識到，如下情況是可能的：在開始產生線跡時並不是僅僅使面線起始部段被向下拉動穿過縫料——這例如由DE 102 34 251 C1已知，而是也可以對被向下拉動的面線起始部段進行引導和處理，從而產生期望的較小的預期線跡伸出部。所產生的預期線跡伸出部可以是最高9mm，可以是最高8mm，可以是最高7mm、甚至更小。In accordance with the invention, it is recognized that it is possible to start the production of the stitches without merely pulling the upper thread starting section downwards through the seam—this is known, for example, from DE 102 34 251 C1. It is also possible to guide and process the upper section of the upper thread that is pulled down to produce the desired smaller expected stitch extension. The resulting stitch extensions can be up to 9 mm, can be up to 8 mm, can be up to 7 mm, or even smaller.
如請求項2，切斷面線起始部段直接產生了小的預期線跡伸出部。As in claim 2, cutting the upper line of the upper line directly produces a small expected stitch extension.
如請求項3，夾緊被抓住的面線起始部段確保了：在執行最開始的針跡時使本身較長的面線起始部段在待產生的線跡的起始端處受控制地沿線跡被定位，由此，面線起始部段的起始端伸出線跡外的最長長度為針跡長度。只要在該面線起始部段中確保最高10mm的針跡長度，便自動地實現了期望的、小的面線預期線跡伸出部。面線捕捉夾可以與面線捕捉器相鄰。面線捕捉器可以同時也被用作縫紉機的擺梭/鉤圈裝置（Greifer），因此也可以是針跡形成工具。也可能替代地，面線捕捉器和擺梭是不同的縫紉機部件。面線捕捉夾可以通過自身的夾緊單元形成，借助於面線捕捉器使面線起始部段受控制地轉入該夾緊單元中。這種夾緊單元可以直接設置在面線捕捉器上。替代於此，可以通過兩個在縫紉機中本就存在的構件形成夾子，使面線起始部段在被面線捕捉器抓住之後適宜地被導入所述兩個構件之間。這種夾子構件可以是底線線筒和底線線筒殼體。As in claim 3, the gripping of the upper line of the upper thread ensures that the first starting line of the upper line is subjected to the beginning of the stitch to be produced when the initial stitch is executed. The control track is positioned along the stitch, whereby the longest length outside the starting end of the upper line starting section is the stitch length. As long as a stitch length of up to 10 mm is ensured in the upper section of the upper thread, the desired, small upper thread expected stitch extension is automatically achieved. The upper thread capture clip can be adjacent to the upper thread catcher. The upper thread catcher can also be used as a shuttle/hook device (Greifer) for the sewing machine, so it can also be a stitch forming tool. Alternatively, the upper thread catcher and the shuttle are different sewing machine components. The upper thread catching clip can be formed by its own clamping unit, with the upper thread section being controlled to transfer the upper thread starting section into the clamping unit. This clamping unit can be placed directly on the upper thread catcher. Instead of this, the clip can be formed by two components that are present in the sewing machine, so that the upper thread starting section is suitably introduced between the two components after being caught by the upper thread catcher. Such a clip member may be a bobbin thread bobbin and a bobbin thread bobbin case.
如請求項4，通過面線引導夾預先規定面線起始部段的長度避免了：面線起始部段不期望地過長。面線引導夾還可以負責，通過擺梭實際上拉出面線起始部段並且不從在縫紉針與面線儲備裝置之間的面線段/面線延伸部分（Oberfadenlauf）中重新拉出面線。As claimed in claim 4, the length of the upper line starting section is pre-defined by the upper thread guide clip to avoid that the upper thread starting section is undesirably too long. The upper thread guide clip can also be responsible for the fact that the upper thread starting section is actually pulled out by the shuttle and the upper thread is not pulled out again from the upper line/face line extension between the sewing needle and the upper thread storage device (Oberfadenlauf).
如請求項5，較小的起始針跡長度、例如一個較短的起始針跡、兩個較短的起始針跡或三個較短的起始針跡避免了：面線起始部段在引導和處理時被傳送裝置不期望地帶動，這可能不期望地導致在縫料與針孔中出口之間的面線具有延長的路段。As requested in item 5, a smaller starting stitch length, such as a shorter starting stitch, two shorter starting stitches or three shorter starting stitches are avoided: the upper line start The section is undesirably carried by the conveyor during guiding and handling, which may undesirably result in an extended section of the upper thread between the sewing material and the outlet in the pinhole.
如請求項6，通過線張緊裝置調節面線拉伸或面線引導實現了：能調節地預先規定面線引導和面線處理，這例如可以用於適配於不同的材料品質和/或不同的線品質。線張緊裝置的調節可以依賴於面線捕捉夾的設計形式或作用。以這種方式可以優化線張緊裝置與面線捕捉夾的共同作用。In the case of claim 6, the upper thread extension or the upper thread guide is adjusted by the line tensioning device: an adjustable front thread guide and an upper thread treatment can be adjusted in advance, which can be used, for example, for adapting to different material qualities and/or Different line qualities. The adjustment of the wire tensioning device can depend on the design or function of the upper thread capture clip. In this way, the interaction of the line tensioning device with the upper thread capture clip can be optimized.
如請求項7的組件的優點相應於在前面參考根據本發明的產生方法描述的內容。擺梭和面線捕捉器可以是同一個部件。替代地，擺梭和面線捕捉器也可以通過彼此分開的部件形成。The advantages of the components of the request item 7 correspond to those described above with reference to the production method according to the present invention. The shuttle and the upper thread catcher can be the same part. Alternatively, the shuttle and the upper thread catcher can also be formed by separate components from each other.
如請求項8的面線刀能夠實現可靠地切斷被抓住的面線起始部段。面線刀可以是機器部件，其形成為與用於在線跡端部上切斷線的另一個刮線刀分開的部件。替代地，面線刀也可以同時形成用於在線跡端部切線的刮線刀。The upper thread cutter of claim 8 can achieve reliable cutting of the gripped upper line starting section. The upper thread cutter may be a machine component that is formed as a separate component from another scraping knife for cutting the wire on the end of the stitch. Alternatively, the upper knife can also simultaneously form a wire scraper for the tangent of the end of the stitch.
如請求項9安裝的面線捕捉器和特別是面線刀實現了，面線起始部段可以與傳送裝置的運動無關地被引導和特別短地被切斷。As claimed in the claim 9, the upper thread catcher and in particular the upper thread cutter are realized, the upper thread starting section can be guided independently of the movement of the transport device and cut off particularly shortly.
如請求項10的面線捕捉夾的優點相應於與產生方法的捕捉夾步驟相聯繫地說明的內容。面線捕捉夾可以與面線捕捉器相鄰。在這種情況下，面線捕捉夾可以同樣安裝在用於縫料傳送裝置的支架上。面線捕捉夾可以通過縫紉機的線筒和線筒殼體的共同作用形成。The advantages of the upper thread capture clip of claim 10 correspond to what is illustrated in connection with the capture clip step of the production method. The upper thread capture clip can be adjacent to the upper thread catcher. In this case, the upper thread catching clip can also be mounted on the bracket for the sewing material transfer device. The upper thread catching clip can be formed by the cooperation of the sewing machine's bobbin and the bobbin case.
如請求項11的面線捕捉夾的佈置簡化了面線起始部段的受控制的引導。The arrangement of the upper thread capture clip of claim 11 simplifies the controlled guidance of the upper line starting section.
如請求項12的面線捕捉夾的優點相應於在前面在產生方法中與引導夾步驟相聯繫地說明的內容。The advantages of the upper thread capture clip of claim 12 correspond to what was previously explained in connection with the leader step in the production method.
對於如請求項13的線張緊裝置的優點也是如此。The same is true for the advantage of the wire tensioning device of claim 13.
由於通過面線引導夾和/或線張緊裝置相應地預先規定，可以特別是避免，被拉出的面線起始部段過長以致於其在拉出時與底線的纏結。As a result of the corresponding pre-specification by the upper thread guide clip and/or the thread tensioning device, it can be particularly avoided that the pulled-up upper thread starting section is too long to be entangled with the lower thread when it is pulled out.
如請求項14的抽吸裝置避免了，被切斷的線頭不期望地聚集在縫紉機的區域中。As the suction device of claim 14 is avoided, the severed thread ends are undesirably concentrated in the area of the sewing machine.
如請求項15的縫紉機的優點相應於在前面參考所述產生方法和縫紉組件所說明的內容。The advantages of the sewing machine as claimed in claim 15 correspond to those described above with reference to the production method and the sewing assembly.
具體實施方式 雙連鎖縫縫紉機1具有基板2以及從該基板豎起的立柱3和成角度的臂4。該臂終止於頭部5。在臂4中可轉動地支承主軸6。該主軸在頭部5中驅動曲柄傳動機構7連同線桿8。曲柄傳動機構7與在頭部5中可軸向移動地支承的針桿9以驅動方式連接。該針桿在其下端部上具有針10。通過曲柄傳動機構7能使針10沿豎直軸11上下運動。DETAILED DESCRIPTION OF THE INVENTION A double-stitch sewing machine 1 has a base plate 2 and a column 3 and an angled arm 4 which are erected from the base plate. The arm terminates in the head 5. The main shaft 6 is rotatably supported in the arm 4. The spindle drives the crank drive 7 together with the mast 8 in the head 5. The crank drive 7 is connected in a driving manner to a needle bar 9 which is axially displaceably supported in the head 5. The needle bar has a needle 10 on its lower end. The needle 10 can be moved up and down along the vertical axis 11 by the crank transmission mechanism 7.
為了簡化位置關係的顯示，下面使用笛卡爾的xyz座標系。豎直軸11沿該座標系的z方向延伸。x方向垂直於圖1的圖紙平面向內延伸並且平行於縫紉機1的縫紉方向。Y方向在圖1中向左延伸。To simplify the display of positional relationships, Cartesian's xyz coordinate system is used below. The vertical axis 11 extends in the z direction of the coordinate system. The x direction extends inwardly perpendicular to the plane of the drawing of Fig. 1 and is parallel to the sewing direction of the sewing machine 1. The Y direction extends to the left in FIG.
針10在孔眼中引導從線筒/線筒12通過線張緊裝置和線桿8輸送的針線13，該針線也被稱為面線。針線13具有自由的面線起始部段13a。The needle 10 guides the needle thread 13 from the bobbin/cartridge 12 through the thread tensioning device and the wire rod 8 in the eyelet, which is also referred to as the upper thread. The needle thread 13 has a free upper thread starting section 13a.
基板2支承利用螺栓固定的支承板14，在該支承板上放置有縫料部分15。支承板14設計為具有用於使下方的移料件17穿過的開口。該下方的移料件具有用於使針10穿過的針孔18。移料件17以已知的方式與佈置在基板2下方的推動-和提升傳動機構驅動連接。The substrate 2 supports a support plate 14 fixed by bolts on which a sewing material portion 15 is placed. The support plate 14 is designed to have an opening for the lower transfer member 17 to pass through. The lower transfer member has a pinhole 18 for the needle 10 to pass through. The transfer member 17 is drivingly connected in a known manner to a push-and-lift drive arranged below the base plate 2.
擺梭19位於支承板14下方，該擺梭包括具有擺梭尖端21的擺梭體部20。在擺梭體部20中帶有罐形的線筒殼體22，該線筒殼體用於接納線筒22a形式的擺梭儲線裝置。線筒殼體22和線筒22a的上邊緣輪廓在根據圖2的示意圖中以虛線表示。擺梭線也被稱為底線。The shuttle 19 is located below the support plate 14, which includes a shuttle body 20 having a shuttle tip 21. In the swing body 20 there is a pot-shaped bobbin housing 22 for receiving a shuttle line storage device in the form of a bobbin 22a. The upper edge contours of the bobbin case 22 and the bobbin 22a are indicated by dashed lines in the schematic view according to FIG. The shuttle line is also known as the bottom line.
擺梭19能圍繞豎直的、沿z方向延伸的擺梭軸線23轉動。擺梭體部20的縫紉運行-轉動方向24在圖3中為圍繞擺梭軸線23的順時針方向。擺梭體部20固定地與軸25連接，該軸與擺梭軸線23同軸。軸25可轉動地支承在利用螺紋件與基板2連接的支承座26中。在該支承座中支承有驅動軸27，該驅動軸與佈置在支承座26的內部的齒輪傳動機構連接。該齒輪傳動機構具有1:2的傳動比，從而在驅動軸27轉動時，位於軸25上的擺梭體部20以兩倍的方式轉動。驅動軸27通過皮帶傳動裝置28與主軸6以驅動方式連接。The shuttle 19 is rotatable about a vertical shuttle axis 23 extending in the z direction. The sewing operation-rotation direction 24 of the swing body 20 is in the clockwise direction around the shuttle axis 23 in FIG. The swing body 20 is fixedly coupled to a shaft 25 that is coaxial with the shuttle axis 23. The shaft 25 is rotatably supported in a support seat 26 that is coupled to the base plate 2 by a screw. A drive shaft 27 is mounted in the support, which is connected to a gear transmission arranged inside the support seat 26. The gear train has a gear ratio of 1:2 such that the swing body 20 on the shaft 25 rotates twice as the drive shaft 27 rotates. The drive shaft 27 is drivingly coupled to the main shaft 6 via a belt drive 28.
刮線刀29用於在線跡端部處切斷針線13和擺梭線，該刮線刀例如由EP 1 847 641 B1已知。The squeegee 29 is used for cutting the needle thread 13 and the shuttle thread at the end of the thread, which is known, for example, from EP 1 847 641 B1.
為了保持和傳送縫料部分15，縫紉機1額外地還具有壓腳30和上方的傳送裝置31，該上方的傳送裝置與下方的移料件17共同作用以用於傳送縫料。In order to hold and convey the sewing material portion 15, the sewing machine 1 additionally has a presser foot 30 and an upper conveying device 31 which cooperates with the lower material moving member 17 for conveying the sewing material.
示意性的圖2還示出面線13從線筒12到面線起始部段13a的延伸情況。面線13從線筒12出發經過線張緊裝置32和線桿8以及面線引導夾33引導到針10。The schematic Figure 2 also shows the extension of the upper thread 13 from the bobbin 12 to the upper thread starting section 13a. The upper thread 13 is guided from the bobbin 12 to the needle 10 via the wire tensioning device 32 and the wire rod 8 and the upper thread guide clip 33.
面線引導夾33具有張緊輪34，該張緊輪被固定在引導桿35上。通過壓簧36使張緊輪34被拉向面線引導夾33的固定在殼體上的支座37，從而夾緊面線13。在支座37上安裝有在圖2中示意性示出的電磁鐵38，該電磁鐵由縫紉機1的中央控制裝置39以未詳細示出的方式操控。The upper thread guide clip 33 has a tension pulley 34 that is fixed to the guide rod 35. The tensioning wheel 34 is pulled by the compression spring 36 to the abutment 37 of the upper thread guiding clip 33 fixed to the housing, thereby clamping the upper thread 13. Mounted on the support 37 is an electromagnet 38, shown schematically in FIG. 2, which is actuated by a central control unit 39 of the sewing machine 1 in a manner not shown in detail.
下面，根據圖3至圖5來描述一種縫紉機-組件的實施方式，該縫紉機-組件用於產生具有最高10mm的預期線跡伸出部的線跡-起始線。Next, an embodiment of a sewing machine-assembly for producing a stitch-starting line having an intended stitch projection of up to 10 mm is described in accordance with FIGS. 3 through 5.
縫紉機-組件具有用於抓住面線13的面線捕捉器40。面線捕捉器40在其自由端部上具有捕捉孔（Fangöse）41（也可參見圖5），該捕捉孔同時用作可動的面線刀。面線捕捉器40的自由端部在圖3所示的初始位置中在下方的移料件17下面延伸，其中，捕捉孔41與針孔18對齊。面線捕捉器40具有L形彎曲的基體42並且通過擺動支承件43支承。擺動支承件43能以固定在殼體上的方式或另選地固定地與下方的移料件17的傳送裝置支架44連接。借助于擺動支承件43可以使面線捕捉器40的基體42圍繞擺動軸線45在根據圖3的初始位置與切斷-終端位置之間移動。圖5示出在初始位置與切斷-終端位置之間的基體42中間位置。擺動軸線45平行於z方向延伸。面線捕捉器40通過氣動的驅動裝置致動，該氣動的驅動裝置在附圖中未示出並且其接合在基體42中的致動孔46上，該致動孔設計為在基體42中與擺動軸線45間隔開。The sewing machine-assembly has an upper thread catcher 40 for gripping the upper thread 13. The upper thread catcher 40 has a catching hole 41 (see also Fig. 5) on its free end, which simultaneously serves as a movable upper thread cutter. The free end of the upper thread catcher 40 extends below the lower moving material 17 in the initial position shown in Figure 3, wherein the capture aperture 41 is aligned with the needle aperture 18. The upper thread catcher 40 has an L-shaped curved base body 42 and is supported by a swing support 43. The oscillating support 43 can be attached to the conveyor bracket 44 of the lower feed member 17 in a manner fixed to the housing or alternatively fixedly. The base body 42 of the upper thread catcher 40 can be moved about the pivot axis 45 between the initial position according to FIG. 3 and the cut-end position by means of the pivot bearing 43. Figure 5 shows the intermediate position of the base body 42 between the initial position and the cut-to-end position. The pivot axis 45 extends parallel to the z direction. The upper thread catcher 40 is actuated by a pneumatic drive, which is not shown in the figures and which is engaged on an actuating bore 46 in the base body 42, which is designed to be in the base body 42 The pivot axes 45 are spaced apart.
下面根據圖3至5描述一種用於產生具有最高10mm的預期線跡伸出部的線跡起始面線的方法。A method for producing a stitch starting face line having an expected stitch projection of up to 10 mm is described below with reference to Figs.
圖3示出在線圈提升位置中的縫紉機1針跡形成工具。縫紉針10已經離開其下止點並且沿正的z軸方向又向上移動，直到形成了面線圈47。在根據圖3的瞬時位置中，擺梭尖端21接合到該面線圈47中。面線捕捉器40處於初始位置，其中，面線圈47形成在面線捕捉器40的捕捉孔41的下方。面線圈47形成一面線部段，利用縫紉針10使該面線部段穿過縫料15被從該縫料的上側傳送到該縫料的下側。Figure 3 shows the sewing machine 1 stitch forming tool in the coil lifting position. The sewing needle 10 has left its bottom dead center and moved upward again in the positive z-axis direction until the face coil 47 is formed. In the instantaneous position according to Fig. 3, the shuttle tip 21 is engaged into the face coil 47. The needle thread catcher 40 is in an initial position in which the face coil 47 is formed below the catching hole 41 of the needle thread catcher 40. The face coil 47 forms a line portion which is conveyed by the sewing needle 10 through the sewing material 15 from the upper side of the sewing material to the lower side of the sewing material.
捕捉孔41以非常小的間距佈置在下方的移料件17的下面。該間距小於1mm。The catching holes 41 are arranged at a very small distance below the lower moving material 17 below. The spacing is less than 1 mm.
自由的面線起始部段13a在根據圖3的瞬時位置中仍向上從縫料15伸出。The free upper thread starting section 13a still projects upwards from the sewing material 15 in the instantaneous position according to FIG.
圖2示出在根據圖3的位置之後短時間的擺梭旋轉瞬時位置。Figure 2 shows the instantaneous position of the shuttle rotation after a short time according to the position of Figure 3.
圖4示出與圖3相比大於180°的擺梭旋轉之後的針跡形成工具瞬時位置。擺梭尖端21在這種旋轉中使面線起始部段13a穿過縫料15被完全向下拉出。面線起始部段13a在此也向下穿過針孔18和捕捉孔41。面線13在擺梭尖端21與針孔18之間在擺梭19的上方和刮線刀29的下方延伸並且相對於縫料從下方首先穿過捕捉孔41並且隨後穿過下方移料件17中的針孔18。也就利用擺梭19使面線起始部段13a被拉出，直到全部的面線起始部段13a都處於線跡-下側的下方。Figure 4 shows the stitch formation tool instantaneous position after the shuttle rotation of greater than 180° compared to Figure 3. In this rotation, the shuttle tip 21 causes the upper thread starting section 13a to be pulled completely downward through the sewing material 15. The upper thread starting section 13a also passes down through the needle hole 18 and the catching hole 41 here. The upper thread 13 extends between the shuttle tip 21 and the pinhole 18 above the shuttle 19 and below the scraper blade 29 and first passes through the capture aperture 41 from below with respect to the sewing material and then passes through the lower transfer member 17 The pinhole 18 in the middle. In other words, the upper thread starting portion 13a is pulled out by the shuttle 19 until all of the upper thread starting portions 13a are below the stitch-lower side.
在擺梭尖端21拉出面線起始部段13a期間，使面線引導夾33被關閉，因此在面線行程中在面線引導夾33之前不再能從面線儲備裝置拉出面線13。在擺梭尖端21拉出面線起始部段13a之後，使面線引導夾33打開。During the pulling of the upper thread starting portion 13a of the shuttle tip 21, the upper thread guiding clip 33 is closed, so that the upper thread 13 can no longer be pulled out of the upper thread storage device before the upper thread guiding clip 33 in the upper thread stroke. After the shuttle tip 21 is pulled out of the upper thread starting portion 13a, the upper thread guide clip 33 is opened.
圖5示出在切斷面線起始部段13a之前的短時間內在根據圖3和圖4的初始位置與切斷-終端位置之間的面線捕捉器40的基體42的中間位置。在基體42擺動時，面線捕捉器40通過捕捉孔41抓住面線13以用於縮短面線起始部段13a。在根據圖5的位置中，捕捉孔41的邊緣稜作為面線刀與組件的固定在殼體上的配對刀48共同作用以用於切斷面線13。在根據圖5的瞬時位置中，針10向上離開針孔18。Fig. 5 shows the intermediate position of the base 42 of the upper thread catcher 40 between the initial position according to Figs. 3 and 4 and the cut-end position in a short time before the upper line start portion 13a is cut. When the base body 42 is swung, the upper thread catcher 40 grasps the upper thread 13 through the catching hole 41 for shortening the upper thread starting portion 13a. In the position according to FIG. 5, the edge edge of the catching hole 41 acts as a face knife to cooperate with the counter knife 48 of the assembly fixed to the housing for cutting the upper thread 13. In the instantaneous position according to Figure 5, the needle 10 is moved upwards away from the pinhole 18.
作為這種切斷過程的結果，面線13被按規定縮短。面線起始部段13a的自由端部在線跡起始端處在縫料部分15上的長度最高為10mm。面線起始部段13a的這個剩餘長度可以小於10mm，並可以是9mm、8mm或也可以是7mm並且也還可以更小。As a result of this cutting process, the upper thread 13 is shortened as prescribed. The length of the free end of the upper thread starting section 13a at the starting end of the stitch on the sewing material portion 15 is up to 10 mm. This remaining length of the upper thread starting section 13a may be less than 10 mm and may be 9 mm, 8 mm or also 7 mm and may also be smaller.
利用面線刀41在配對刀48處切斷面線13是利用面線捕捉器40引導被抓住的面線起始部段13a的最終結果並且從而實現了面線起始部段13a的製造，即得到期望的、最高10mm的面線起始部段13a線跡伸出部。The cutting of the upper thread 13 at the counter knife 48 by the upper thread cutter 41 is the final result of guiding the grasped upper thread starting section 13a by the upper thread catcher 40 and thereby realizing the manufacture of the upper thread starting section 13a. That is, the desired upper thread starting portion 13a of the upper 10 mm trace projection is obtained.
現在，可以在面線13和在圖1至圖5中未詳細示出的底線參與的情況下實現線跡，其為雙連鎖縫。在線跡端部處，隨後利用刮線刀29進行面線13和底線的切線過程。Now, the stitch can be realized with the upper thread 13 and the bottom line not shown in detail in FIGS. 1 to 5, which is a double stitch. At the end of the stitch, the tangential process of the upper thread 13 and the lower thread is then performed using the wire scraper 29.
借助於控制裝置39可以在開始縫紉期間和特別是在切斷面線起始部段13a期間根據圖3至圖5的順序得到針跡長度。這避免了在下方的移料件17與面線起始部段13a之間的不期望的相對運動。By means of the control device 39, the stitch length can be obtained in accordance with the sequence of Figs. 3 to 5 during the start of sewing and in particular during the cutting of the upper line starting section 13a. This avoids undesired relative movement between the lower moving material 17 and the upper thread starting section 13a.
根據圖6的俯視圖示出在線跡-起始部段中的利用根據圖3至圖5的縫紉組件產生的線跡48a。縫紉方向沿x方向在圖6中向左延伸。基於在面線刀41與配對刀48之間的面線部段，在線跡48a起始端處的面線起始部段13a短到，實現10mm的最大線跡伸出部A。The stitch 48a produced in the stitch-starting section with the sewing assembly according to Figs. 3 to 5 is shown in a plan view according to Fig. 6. The sewing direction extends leftward in FIG. 6 in the x direction. Based on the needle line section between the upper thread cutter 41 and the pairing knife 48, the upper thread starting section 13a at the beginning end of the stitch 48a is short, achieving a maximum stitch extension A of 10 mm.
在圖6中也示出了，最開始的兩個起始-針跡S1 、S2 相對於後面的針跡S3 ,…Sn 縮短。In FIG. 6 also shows, the beginning of the initial two - stitches S 1, S 2 with respect to the back stitch S 3, ... S n shortened.
下面根據圖7描述縫紉組件的另一個實施方式，其用於產生具有最高10mm的預期線跡伸出部的線跡-起始部段。與上文參考圖1至圖5說明的部件相對應的部件具有相同的附圖標記並且不再詳細說明。Another embodiment of a sewing assembly for producing a stitch-starting section having an expected stitch extension of up to 10 mm is described below with reference to FIG. Components that correspond to those described above with reference to Figures 1 through 5 have the same reference numerals and will not be described in detail.
根據圖7的組件除了根據圖1至圖5的部件之外還具有在圖6中示意性示出的提升裝置49。提升裝置49可以設計為氣動缸。提升裝置49可通過中央控制裝置39操控。提升裝置49佈置在線筒殼體22的底部與線筒22a的下底壁之間。通過提升裝置49可以實現線筒22a相對於線筒殼體22沿移動路徑50的提升移動，該移動路徑在圖2中表示。在線筒22a相對於線筒殼體22的提升的位置中，線筒22a的蓋壁51在邊緣側相對於在線筒殼體22的上側中面向該蓋壁的線筒接納部52突出大於0.5mm、例如大於1mm。The assembly according to FIG. 7 has a lifting device 49 which is shown schematically in FIG. 6 in addition to the components according to FIGS. 1 to 5 . The lifting device 49 can be designed as a pneumatic cylinder. The lifting device 49 can be operated by the central control unit 39. The lifting device 49 is disposed between the bottom of the spool housing 22 and the lower bottom wall of the spool 22a. The lifting movement of the bobbin 22a relative to the bobbin housing 22 along the moving path 50 can be achieved by the lifting device 49, which is shown in FIG. In the raised position of the wire barrel 22a relative to the drum housing 22, the cover wall 51 of the wire barrel 22a protrudes more than 0.5 mm on the edge side with respect to the wire barrel receiving portion 52 facing the cover wall in the upper side of the wire barrel housing 22. For example, greater than 1 mm.
為了受控制地引導和處理被表現為面線捕捉器的擺梭尖端21抓住的面線起始部段13a以得到最高10mm的期望的預期線跡伸出部，根據圖7的組件以如下方式工作：In order to controlably guide and process the upper thread starting section 13a which is represented by the shuttle tip 21 of the upper thread catcher to obtain a desired expected stitch projection of up to 10 mm, the assembly according to Fig. 7 is as follows Way work:
在面線圈47的形成和利用擺梭尖端21抓住該面線圈方面，根據圖7的組件首先如結合圖1至圖3所述地進行工作。In terms of the formation of the face coil 47 and the gripping of the face coil with the shuttle tip 21, the assembly according to Figure 7 first operates as described in connection with Figures 1 to 3.
在到達相應於圖3的瞬時位置時，致動提升裝置49，從而線筒22a突出於線筒殼體22的上邊緣。擺梭尖端21隨後拉出面線13並向下相應於在前面結合圖1至圖5的實施方式所說明地穿過縫料部分15拉動面線起始部段13a。在根據圖7的實施方式中，面線起始部段13a由於線筒22a蓋壁51相對於線筒殼體22的突出而位於蓋壁51與線筒殼體22之間，如圖7所示。這樣，面線13的一個部段位於線筒22a內。Upon reaching the instantaneous position corresponding to FIG. 3, the lifting device 49 is actuated such that the spool 22a protrudes from the upper edge of the spool housing 22. The shuttle tip 21 then pulls out the upper thread 13 and pulls the upper thread starting section 13a downwardly through the seam portion 15 as explained above in connection with the embodiment of Figures 1 to 5. In the embodiment according to FIG. 7, the upper thread starting portion 13a is located between the cover wall 51 and the bobbin case 22 due to the projection of the cover wall 51 of the bobbin 22a with respect to the bobbin case 22, as shown in FIG. Show. Thus, one section of the upper thread 13 is located within the spool 22a.
在根據圖7的擺梭尖端21的瞬時位置中或在繼續前進45°的擺梭尖端21旋轉位置中，提升裝置49進入其初始位置，從而線筒22a重新降低到其在線筒殼體22中的常規位置。面線起始部段13a則在線筒22a與線筒殼體22之間被夾緊。這樣，通過線筒22a和線筒殼體22形成了面線捕捉夾。In the instantaneous position of the shuttle tip 21 according to Fig. 7 or in the rotational position of the shuttle tip 21 which continues to advance by 45, the lifting device 49 enters its initial position, whereby the spool 22a is lowered again into its spool housing 22 Regular location. The upper thread starting portion 13a is clamped between the spool 22a and the spool housing 22. Thus, the upper thread catching clip is formed by the bobbin 22a and the bobbin case 22.
如果在根據圖7的瞬時位置之後並且在面線起始部段13a被夾緊之後形成後續的針跡，則面線起始部段13a在接下來的縫紉過程中被逐步地從面線捕捉夾22a、22中拉出，其中，面線起始部段13a以及從縫料部分15穿過針孔18從上方直接引導的面線部段被底線纏繞並在形成線跡時共同打結。面線起始部段13a的自由的起始端隨後可以具有針跡長度範圍中的長度。如果針跡長度被設計為最高10mm，則可以通過面線起始部段13a得到最高10mm的期望的預期線跡伸出部。If a subsequent stitch is formed after the instantaneous position according to FIG. 7 and after the upper thread starting portion 13a is clamped, the upper thread starting portion 13a is gradually captured from the upper thread during the subsequent sewing process. The clips 22a, 22 are pulled out, wherein the upper thread starting portion 13a and the upper thread portion directly guided from above through the needle hole 18 from above through the needle hole 18 are wound by the bottom thread and are knotted together when the stitch is formed. The free starting end of the upper thread starting section 13a can then have a length in the range of stitch lengths. If the stitch length is designed to be at most 10 mm, a desired expected stitch projection of up to 10 mm can be obtained by the upper thread starting section 13a.
圖8示出線跡48b，該線跡利用根據圖7的縫紉組件產生。面線起始部段13a在線跡48b中並不是處在線跡起始端處遠離線跡48b，而是在針跡Si 與Si+1 之間。i的大小依賴於在縫料部分15下方的拉出的面線起始部段13a的長度，該面線起始部段在縫紉時被逐步地從在線筒22a與線筒殼體22之間的夾緊狀態中拉出。i可以例如在4到10的範圍中。在線跡48b中，面線起始部段13a的線跡伸出部A也為最高10mm。Figure 8 shows a stitch 48b which is produced using the sewing assembly according to Figure 7. The upper thread starting section 13a is not located in the trace 48b away from the stitch 48b at the beginning of the stitch, but between the stitches S i and S i+1 . The size of i depends on the length of the drawn upper thread starting section 13a below the sewing material portion 15, which is gradually stepped from the bobbin 22a and the bobbin case 22 at the time of sewing. Pull out in the clamped state. i can be, for example, in the range of 4 to 10. In the track 48b, the stitch projecting portion A of the upper thread starting portion 13a is also up to 10 mm.
在縫紉組件的一變型方案中可以取消面線引導夾33。通過設定線張力——該線張力通過線張緊裝置32施加到面線13上——隨後在拉出和/或引導面線起始部段13a時得到從面線起始部段13a拉出的面線13長度尺寸與從縫紉針10前的面線段拉出的面線13長度尺寸之間的期望的關係。線張力被設定得越強，則從面線起始部段13a拉出的長度尺寸相對于由線張緊裝置32提供的面線13長度尺寸的比例越大。The upper thread guide clip 33 can be eliminated in a variant of the sewing assembly. By setting the thread tension - which is applied to the upper thread 13 by the thread tensioning device 32 - then pulled out of the upper thread starting section 13a when the upper thread starting section 13a is pulled out and/or guided The length dimension of the upper thread 13 is in a desired relationship with the length dimension of the upper thread 13 pulled out from the upper thread section in front of the sewing needle 10. The stronger the line tension is set, the larger the ratio of the length dimension drawn from the upper thread starting section 13a to the length dimension of the upper thread 13 provided by the thread tensioning device 32.
縫紉組件可以額外地還具有在圖5中示意性表示的抽吸裝置53，用於抽吸利用面線刀41切斷的面線部段。抽吸裝置53與配對刀48的切割邊稜相鄰。抽吸裝置53與負壓源連接。The sewing assembly may additionally have a suction device 53 as schematically represented in Fig. 5 for suctioning the upper thread section cut by the upper thread cutter 41. The suction device 53 is adjacent to the cutting edge of the counter knife 48. The suction device 53 is connected to a source of negative pressure.
在用於產生具有最高10mm的預期線跡伸出部的線跡-起始部段的縫紉組件的另一個變型中，具有捕捉孔41的面線捕捉器40也可以在沒有配對刀的情況下使用。這樣，面線捕捉器40與面線捕捉夾共同作用，該面線捕捉夾是如上所述的在線筒22a與線筒殼體22之間形成的夾緊裝置。該面線捕捉夾可以與面線捕捉器40相鄰。In another variation of the sewing assembly for producing a stitch-start section having an expected stitch extension of up to 10 mm, the face line catcher 40 having the capture aperture 41 can also be used without a pairing knife use. Thus, the upper thread catcher 40 cooperates with the upper thread capture clip, which is a clamping device formed between the spool 22a and the spool housing 22 as described above. The upper thread capture clip can be adjacent to the upper thread catcher 40.
在縫紉組件的該變型中，面線起始部段13a不是被切斷，而是被以受控制地引導的方式與線跡-起始部段縫合，如前面結合圖7和圖8說明地。在該縫紉過程中，可以通過用於沿+/-y方向形成線跡的、捕捉孔41的同步運動實現：面線起始部段13a在從面線捕捉夾中拉出的情況下被逐漸地向右（-y方向）和向左（+y方向）放置到針孔中，從而其始終被設置在相應的針跡下方並且在下面縫紉。為了確保這樣沿+/-y方向設置面線起始部段13a，針孔18的側面——通過該側面在縫紉起始-線跡部段時引導面線起始部段13a——能以直線延伸的方式形成，也就是說並非圓形彎曲。In this variant of the sewing assembly, the upper thread starting section 13a is not cut, but is stitched in a controlled manner with the stitch-starting section, as explained above in connection with Figures 7 and 8. . In the sewing process, it is possible to realize the synchronous movement of the catching holes 41 by forming the stitches in the +/- y direction: the upper thread starting section 13a is gradually pulled out from the upper thread catching clip The ground is placed into the pinhole to the right (-y direction) and to the left (+y direction) so that it is always placed under the corresponding stitch and sewn underneath. In order to ensure that the upper thread starting section 13a is arranged in the +/- y direction, the side of the needle hole 18, through which the leading line starting section 13a is guided at the sewing start-track section, can be in a straight line The way of extension is formed, that is to say not circularly curved.
1‧‧‧雙連鎖縫縫紉機
2‧‧‧基板
3‧‧‧立柱
4‧‧‧臂
5‧‧‧頭部
6‧‧‧支承主軸
7‧‧‧曲柄傳動機構
8‧‧‧線桿
9‧‧‧針桿
10‧‧‧針
11‧‧‧豎直軸
12‧‧‧線筒/線筒
13‧‧‧針線、面線
13a‧‧‧面線起始部段
14‧‧‧支承板
15‧‧‧縫料部分
17‧‧‧移料件
18‧‧‧針孔
19‧‧‧擺梭
20‧‧‧擺梭體部
21‧‧‧擺梭尖端
22‧‧‧線筒殼體
22a‧‧‧線筒
23‧‧‧擺梭軸線
24‧‧‧縫紉運行-轉動方向
25‧‧‧軸
26‧‧‧支承座
27‧‧‧驅動軸
28‧‧‧皮帶傳動裝置
29‧‧‧刮線刀
30‧‧‧壓腳
31‧‧‧傳送裝置
32‧‧‧線張緊裝置
33‧‧‧面線引導夾
34‧‧‧張緊輪
35‧‧‧引導桿
36‧‧‧壓簧
37‧‧‧支座
38‧‧‧電磁鐵
39‧‧‧中央控制裝置
40‧‧‧面線捕捉器
41‧‧‧捕捉孔
42‧‧‧基體
43‧‧‧擺動支承件
44‧‧‧傳送裝置支架
45‧‧‧擺動軸線
46‧‧‧致動孔
47‧‧‧面線圈
48‧‧‧配對刀
48a、48b‧‧‧線跡
49‧‧‧提升裝置
50‧‧‧移動路徑
51‧‧‧蓋壁
52‧‧‧線筒接納部
53‧‧‧抽吸裝置
A‧‧‧最大線跡伸出部
S1、S2‧‧‧針跡
S3,…Sn‧‧‧針跡
Si、Si+1‧‧‧針跡1‧‧‧Double chain sewing machine
2‧‧‧Substrate
3‧‧‧ column
4‧‧‧ Arm
5‧‧‧ head
6‧‧‧Support spindle
7‧‧‧Crank drive mechanism
8‧‧‧ pole
9‧‧‧ Needle bar
10‧‧‧ needle
11‧‧‧ vertical axis
12‧‧‧Wire/wire
13‧‧‧Needle, upper thread
13a‧‧‧Face line starting section
14‧‧‧Support plate
15‧‧‧Sewing parts
17‧‧‧Transfer parts
18‧‧‧ pinhole
19‧‧‧ Shuttle
20‧‧‧ Shuttle body
21‧‧‧The tip of the shuttle
22‧‧‧Wire housing
22a‧‧‧Wire tube
23‧‧‧ Shuttle axis
24‧‧‧Sewing operation - direction of rotation
25‧‧‧Axis
26‧‧‧ support
27‧‧‧Drive shaft
28‧‧‧Belt transmission
29‧‧‧Scratch knife
30‧‧‧Foot presser
31‧‧‧Transportation device
32‧‧‧Wire tensioning device
33‧‧‧Face guide clip
34‧‧‧ tensioner
35‧‧‧ Guide rod
36‧‧‧pressure spring
37‧‧‧Support
38‧‧‧Electromagnet
39‧‧‧Central control unit
40‧‧‧Face line catcher
41‧‧‧Capture hole
42‧‧‧ base
43‧‧‧Swing support
44‧‧‧Transfer bracket
45‧‧‧Swing axis
46‧‧‧ actuation hole
47‧‧‧ face coil
48‧‧‧ Pairing knife
48a, 48b‧‧‧ stitches
49‧‧‧ lifting device
50‧‧‧Moving path
51‧‧‧ 盖
52‧‧‧Wire Receiver
53‧‧‧Suction device
A‧‧‧Maximum stitch extension
S 1 , S 2 ‧‧‧ stitches
S 3 ,...S n ‧‧‧ Stitch
S i , S i+1 ‧‧‧ stitches
下面根據附圖詳細說明本發明的實施例。圖中： 圖1示出雙連鎖縫縫紉機的前視圖； 圖2示出縫紉機的針跡形成區域的透視示意圖； 圖3以放大的比例尺相應於圖1中的觀察箭頭III示出縫紉機的局部的俯視圖，其中示出針跡形成工具在線圈提升位置中由擺梭尖端抓住面線圈的情況； 圖4在類似圖3的視圖中示出在根據圖3的位置之後的瞬時位置中的針跡形成工具，其中，擺梭尖端已使自由的面線起始端被完全從縫料中拉出； 圖5在類似於圖3的視圖中示出在根據圖4的位置之後的瞬時位置，其中，面線的自由端部在面線捕捉器與面線-配對刀的共同作用下被切除； 圖6示意性地示出利用根據圖3至圖5的縫紉組件縫紉的線跡的俯視圖，用於說明所產生的線跡起始面線連同其預先規定的預期線跡伸出部； 圖7在類似於圖3至圖5的視圖中示出用於受控制地引導被抓住的面線起始部段的另一個實施方式，其中，該面線起始部段被夾在底線線筒的線筒蓋與線筒殼體之間；和 圖8示意性地示出利用根據圖7的縫紉組件縫紉的線跡的俯視圖，用於說明所產生的線跡起始面線連同其預先規定的預期線跡伸出部。Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings: Fig. 1 shows a front view of a double-stitch sewing machine; Fig. 2 shows a perspective view of a stitch forming area of a sewing machine; Fig. 3 shows a part of the sewing machine with an enlarged scale corresponding to the observation arrow III in Fig. 1. Top view showing the case where the stitch forming tool grips the face coil by the swing tip in the coil lifting position; FIG. 4 shows the stitch in the instantaneous position after the position according to FIG. 3 in a view like FIG. Forming a tool in which the shuttle tip has caused the free noodle starting end to be completely pulled out of the sewing material; FIG. 5 shows the instantaneous position after the position according to FIG. 4 in a view similar to FIG. 3, wherein The free end of the upper thread is cut off by the combination of the upper thread catcher and the upper thread-pairing knife; FIG. 6 schematically shows a top view of the stitches sewn with the sewing assembly according to FIGS. 3 to 5 for The resulting stitch starting face line is illustrated along with its pre-specified expected stitch extension; FIG. 7 is shown in a view similar to FIGS. 3 to 5 for controlled guiding of the grasped face line Another embodiment of the initial section, wherein The upper thread starting section is sandwiched between the bobbin lid of the bobbin thread bobbin and the bobbin casing; and FIG. 8 schematically shows a top view of the stitch stitched with the sewing assembly according to Fig. 7 for illustrating the The resulting stitch starting face line is along with its pre-specified expected stitch extension.
13a‧‧‧面線起始部段 13a‧‧‧Face line starting section
17‧‧‧移料件 17‧‧‧Transfer parts
18‧‧‧針孔 18‧‧‧ pinhole
19‧‧‧擺梭 19‧‧‧ Shuttle
20‧‧‧擺梭體部 20‧‧‧ Shuttle body
21‧‧‧擺梭尖端 21‧‧‧The tip of the shuttle
22‧‧‧線筒殼體 22‧‧‧Wire housing
22a‧‧‧線筒 22a‧‧‧Wire tube
29‧‧‧刮線刀 29‧‧‧Scratch knife
40‧‧‧面線捕捉器 40‧‧‧Face line catcher
41‧‧‧捕捉孔 41‧‧‧Capture hole
42‧‧‧基體 42‧‧‧ base
43‧‧‧擺動支承件 43‧‧‧Swing support
44‧‧‧傳送裝置支架 44‧‧‧Transfer bracket
45‧‧‧擺動軸線 45‧‧‧Swing axis
46‧‧‧致動孔 46‧‧‧ actuation hole
48‧‧‧配對刀 48‧‧‧ Pairing knife
48a‧‧‧線跡 48a‧‧‧ stitches
53‧‧‧抽吸裝置 53‧‧‧Suction device
A‧‧‧最大線跡伸出部 A‧‧‧Maximum stitch extension
S1、S2‧‧‧針跡 S 1 , S 2 ‧‧‧ stitches
S3、Su‧‧‧針跡 S 3 , Su‧‧‧ stitches
Claims (15)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015223194.1A DE102015223194B3 (en) | 2015-11-24 | 2015-11-24 | A method for creating a seam beginning upper thread with short target seam projection and assembly for performing the method |
| DE102015223194.1 | 2015-11-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201726999A true TW201726999A (en) | 2017-08-01 |
| TWI753871B TWI753871B (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW105138395A TWI753871B (en) | 2015-11-24 | 2016-11-23 | Method for producing a stitch starting upper thread and an assembly for carrying out the method, and a sewing machine having the assembly |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3176296B1 (en) |
| JP (1) | JP6975533B2 (en) |
| KR (1) | KR102557765B1 (en) |
| CN (1) | CN106757847B (en) |
| DE (1) | DE102015223194B3 (en) |
| TW (1) | TWI753871B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017207627A1 (en) * | 2017-05-05 | 2018-11-08 | Dürkopp Adler AG | Assembly for creating a seam beginning upper thread with a desired seam projection |
| DE102017207626A1 (en) * | 2017-05-05 | 2018-11-08 | Dürkopp Adler AG | Method for producing a seam end lower thread with a predetermined desired seam protrusion |
| CN109457409A (en) * | 2018-11-28 | 2019-03-12 | 杰克缝纫机股份有限公司 | The Yarn taking-up mechanism and sewing machine of use in sewing machine |
| CN109402885A (en) * | 2018-11-28 | 2019-03-01 | 杰克缝纫机股份有限公司 | The Yarn taking-up mechanism and sewing machine of use in sewing machine |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE80842C (en) * | ||||
| DE3604299A1 (en) * | 1985-04-16 | 1986-10-16 | Kochs Adler Ag, 4800 Bielefeld | METHOD FOR PULLING THE FREE THREADING END OF A NEEDLE THREAD FROM THE TOP OF A SEWING MATERIAL ON ITS BASE AND DEVICE FOR IMPLEMENTING THE METHOD |
| DE19746653C1 (en) * | 1997-10-22 | 1998-11-12 | Pfaff Ag G M | Sewing machine thread cutting |
| JP2002113278A (en) * | 2000-10-10 | 2002-04-16 | Juki Corp | Thread-breaking device of sewing machine |
| DE10123075C1 (en) * | 2001-05-11 | 2002-10-10 | Duerkopp Adler Ag | Thread cutter, at a double lockstitch sewing machine, has a thread drawing blade positioned very close to the fabric support surface, to leave a very short cut end when the thread is severed |
| US7143705B2 (en) * | 2002-03-06 | 2006-12-05 | L & P Property Management Company | Multiple horizontal needle quilting machine and method |
| JP4037151B2 (en) * | 2002-04-10 | 2008-01-23 | Ｊｕｋｉ株式会社 | Upper thread holding device for sewing machine |
| DE10234251C1 (en) * | 2002-07-27 | 2003-10-09 | Duerkopp Adler Ag | Sewing machine stitching mechanism relaxes the pressure on the fabric by the presser foot, when the upper thread is clamped between the needle and thread lever on the first seam stitch, for an extended duration with a thicker fabric |
| DE202006009410U1 (en) * | 2006-04-21 | 2007-08-30 | Dürkopp Adler AG | Thread-pulling knife for a sewing machine |
| DE102006019193A1 (en) * | 2006-04-21 | 2007-10-25 | Dürkopp Adler AG | Lockstitch sewing machine |
| EP2360305B1 (en) * | 2010-02-17 | 2013-05-08 | Nähmaschinenfabrik Emil Stutznäcker GmbH & Co. KG | Method for operating a sewing machine and sewing machine |
| DE102010043906A1 (en) * | 2010-11-15 | 2012-05-16 | Dürkopp Adler AG | Sewing machine and method for sewing a seam beginning with such a sewing machine |
| JP5885018B2 (en) * | 2011-09-13 | 2016-03-15 | ヤマトミシン製造株式会社 | Fraying prevention method for double chain stitch seams and fraying prevention device for double chain stitch sewing machine |
| DE102012213599A1 (en) * | 2012-08-01 | 2014-02-06 | Dürkopp Adler AG | Thread-pulling knife for a sewing machine, thread trimming assembly and sewing machine with such a thread-pulling knife |
-
2015
- 2015-11-24 DE DE102015223194.1A patent/DE102015223194B3/en active Active
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2016
- 2016-11-09 EP EP16197995.0A patent/EP3176296B1/en active Active
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- 2016-11-22 KR KR1020160155622A patent/KR102557765B1/en active IP Right Grant
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| TWI753871B (en) | 2022-02-01 |
| JP6975533B2 (en) | 2021-12-01 |
| KR20170060590A (en) | 2017-06-01 |
| KR102557765B1 (en) | 2023-07-19 |
| CN106757847B (en) | 2020-09-08 |
| CN106757847A (en) | 2017-05-31 |
| DE102015223194B3 (en) | 2017-02-23 |
| EP3176296B1 (en) | 2019-08-21 |
| EP3176296A1 (en) | 2017-06-07 |
| JP2017099875A (en) | 2017-06-08 |
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