TW201833404A - Double lockstitch sewing machine and method of producing a seam beginning needle thread - Google Patents

Double lockstitch sewing machine and method of producing a seam beginning needle thread Download PDF

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Publication number
TW201833404A
TW201833404A TW107104355A TW107104355A TW201833404A TW 201833404 A TW201833404 A TW 201833404A TW 107104355 A TW107104355 A TW 107104355A TW 107104355 A TW107104355 A TW 107104355A TW 201833404 A TW201833404 A TW 201833404A
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TW
Taiwan
Prior art keywords
thread
upper thread
line
section
beginning
Prior art date
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TW107104355A
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Chinese (zh)
Inventor
帕韋爾 維比爾
帕韋爾 馬堤杰克
拉多米爾 休瑪皮立克
路博米爾 賈西克
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德商都寇帕鷹股份有限公司
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Publication of TW201833404A publication Critical patent/TW201833404A/en

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D05B65/02—Devices for severing the needle or lower thread controlled by the sewing mechanisms
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B1/00—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
    • D05B1/08—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making multi-thread seams
    • D05B1/12—Lock-stitch seams
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B47/00—Needle-thread tensioning devices; Applications of tensometers
    • D05B47/04—Automatically-controlled tensioning devices
    • 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
    • D05B57/10—Shuttles
    • D05B57/14—Shuttles with rotary hooks
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D05B65/06—Devices for severing the needle or lower thread and for disposing of the severed thread end ; Catching or wiping devices for the severed thread
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2207/00—Use of special elements
    • D05D2207/02—Pneumatic or hydraulic devices
    • D05D2207/04—Suction or blowing devices

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

A double lockstitch sewing machine and a method of producing a seam beginning needle thread are disclosed. The double lockstitch sewing machine has a machine frame, a needle thread supply and a bobbin thread supply. A sewing needle is provided to guide the needle thread. A looper is provided to loop the needle thread around the bobbin thread. A needle thread beginning section grasping device is switchable between a neutral position, a needle thread grasping position and a needle thread clamping position. In the needle thread grasping position, a needle thread beginning section is grasped by a needle thread grasping means. In the needle thread clamping position, the needle thread beginning section is clamped securely against the frame between the needle thread beginning section grasping device and a counter clamping body. A beginning thread knife is provided to cut off the needle thread beginning section. When cutting off a residual needle thread length from the remaining needle thread beginning section using the beginning thread knife, a needle thread tension is taken advantage of that is generated when feeding the piece of fabric. As a result, a sewing machine is obtained that allows a seam beginning needle thread to be produced with a desirable short nominal excess seam length.

Description

雙線鎖式線跡縫紉機和製造線縫開頭面線的方法Double-line lock stitch sewing machine and method for manufacturing seam starting line

發明領域 本發明涉及雙線鎖式線跡縫紉機。本發明還涉及利用這種類型的縫紉機製造待縫紉在織物件中的線縫的線縫開頭面線的方法，所述線縫開頭面線具有至多10mm的標稱過量線長。FIELD OF THE INVENTION The present invention relates to a two-wire lock stitch sewing machine. The invention also relates to a method of manufacturing a seam opening line of a seam to be sewn in a fabric member using a sewing machine of this type, said seam opening thread having a nominal excess line length of at most 10 mm.

發明背景 從文獻EP 1847641B1、從文獻DE 10234251C1、從文獻DE 102006019193A1、以及從文獻DE 10123075C1已知縫紉機。BACKGROUND OF THE INVENTION Sewing machines are known from the documents EP 1 847 641 B1, from the documents DE 10 234 251 C1, from the documents DE 10 2006 019 193 A1, and from the document DE 10 123 075 C1.

發明概要 本發明的目的是提供允許線縫開頭面線如此製造以具有所述期望短標稱過量線長的縫紉機。這種類型的縫紉機允許以最大的確定性實現的是，防止在縫紉織物件之後線縫開頭線可見地突伸超過在織物件的可見側上的織物件邊緣。SUMMARY OF THE INVENTION It is an object of the present invention to provide a sewing machine that allows the beginning of the seam to be so manufactured to have the desired short nominal excess line length. This type of sewing machine allows for maximum certainty to prevent the beginning of the seam from tangibly protruding beyond the edge of the fabric member on the visible side of the fabric member after sewing the fabric member.

這個目的根據本發明通過雙線鎖式線跡縫紉機實現，所述雙線鎖式線跡縫紉機包括：機架；面線供應器；底線供應器；線跡形成工具，即用於引導面線的縫紉針和使面線圍繞底線成環的成環器；能夠在中性位置、面線抓獲位置和面線夾持位置之間切換的面線開頭區段抓獲裝置，在面線抓獲位置中，面線開頭區段被面線開頭區段抓獲裝置的面線抓獲器抓獲，且在面線夾持位置中，面線開頭區段在面線開頭區段抓獲裝置和配對夾持體之間牢固地夾持到機架；和用於切斷面線開頭區段的開頭線刀。This object is achieved according to the invention by a two-wire lock stitch sewing machine comprising: a frame; an upper thread feeder; a bottom thread supply; a stitch forming tool, ie for guiding the upper thread a sewing needle and a looper for looping the upper thread around the bottom thread; a front section catching device capable of switching between the neutral position, the upper thread grasping position and the upper thread clamping position, in the upper thread capturing position, The upper section of the upper thread is captured by the upper thread catcher of the upper section catching device of the upper thread, and in the upper thread clamping position, the beginning section of the upper thread is firmly secured between the catching device and the mating holder at the beginning of the upper thread. Clamped to the frame; and the first line cutter used to cut the beginning section of the upper line.

根據本發明發現的是，能夠在中性位置、面線抓獲位置和面線夾持位置之間切換的面線開頭區段抓獲裝置允許面線開頭區段線上縫形成過程開始時以限定的方式定位和緊固，從而允許後續切割過程。這允許面線開頭區段以非常短的長度如此被切斷，以使得僅短的線縫開頭面線維持線上縫的開頭處，這導致視覺上吸引人的線縫圖案。開頭線刀可以同時用於切斷底線開頭區段。在這種情況下，也能夠設想提供底線開頭區段抓獲裝置。所述底線開頭區段抓獲裝置可以由拉線刀和與之關聯的配對夾持體形成。面線抓獲器的切換路徑可以線上縫的側部上延伸，在縫紉過程期間線縫的底線從所述側部供應到線縫。縫紉過程能夠如此控制，以使得線縫的第一線跡製造得比其他線跡短，換言之第一線跡配置為短的線跡。抓獲位置和夾持位置可以是面線開頭區段抓獲裝置的不同位置。面線開頭區段抓獲裝置可以是與開頭線刀分開的裝置。According to the present invention, it is found that the upper line segment catching device capable of switching between the neutral position, the upper thread catching position and the upper thread clamping position allows the upper end of the upper thread section to be formed in a defined manner at the beginning of the seam forming process. Positioning and fastening to allow for subsequent cutting processes. This allows the beginning section of the upper thread to be cut in such a way that it is cut so that only the short seam start line maintains the beginning of the seam on the line, which results in a visually appealing seam pattern. The opening line knife can also be used to cut off the beginning section of the bottom line. In this case, it is also conceivable to provide a bottom line start section catching device. The bottom line beginning section capture device can be formed by a wire cutter and a mating holder associated therewith. The switching path of the upper thread catcher may extend over the side of the seam, from which the bottom line of the seam is supplied to the seam during the sewing process. The sewing process can be controlled such that the first stitch of the seam is made shorter than the other stitches, in other words the first stitch is configured as a short stitch. The capture position and the gripping position may be different positions of the gripping device at the beginning of the upper line. The upper line segment capture device can be a separate device from the beginning line cutter.

形成面線開頭區段抓獲裝置的面線抓獲器的面線抓獲叉被證明尤其適用於在面線抓獲位置中的面線開頭區段的緊固定位。The upper thread capture fork forming the upper thread catcher of the upper line segment capture device has proven to be particularly suitable for the secure positioning of the upper section of the upper thread in the upper thread capture position.

開頭線刀的切割器被證明尤其適用於形成短線縫開頭面線，切割器剛性地附連到用於待縫紉的織物件的繞線筒進給器。開頭線切割器繼而在與線縫開頭非常短的距離處定位。The cutter of the beginning line cutter proved to be particularly suitable for forming the beginning line of the short seam, which is rigidly attached to the bobbin feeder for the fabric piece to be sewn. The leading wire cutter is then positioned at a very short distance from the beginning of the seam.

切割器配置為在狗牙器的基體部分中的切割邊緣，如此配置的實施方式尤其適用於形成短的面線開頭。與剩餘部分的繞線筒進給器相反，包括切割邊緣的基體部分可以被硬化。The cutter is configured as a cutting edge in the base portion of the dog teeth, and the thus configured embodiment is particularly suitable for forming a short noodle opening. In contrast to the remainder of the bobbin feeder, the base portion including the cutting edge can be hardened.

配置成線上縫的末端處切斷面線和底線的拉線刀允許線上縫的末端處自動切割面線和底線，且允許在那裡獲得完全不突伸或僅非常少地突伸的非常短的殘餘線長。A wire cutter configured to cut the upper and lower threads at the end of the seam allows the upper and lower threads to be automatically cut at the end of the seam, and allows for very short projections that are completely non-bumping or only very little protruding there. The residual line is long.

配置成切換面線開頭區段抓獲裝置的切換裝置如此配置以使得面線開頭區段抓獲裝置的運動模式的至少一部分被拉線刀的驅動器驅動，從而允許面線開頭區段抓獲裝置和拉線刀在它們一起被驅動的運動模式的部分期間同步地移位元。因此，例如線開頭區段能夠從其相應夾持位置釋放同時線上縫的末端處切割線。The switching device configured to switch the upper line segment capture device is configured such that at least a portion of the motion pattern of the upper line beginning segment capture device is driven by the driver of the wire cutter, thereby allowing the upper line segment capture device and the pull wire The knives shift the elements synchronously during portions of the motion pattern in which they are driven together. Thus, for example, the line beginning section can be released from its respective clamping position while cutting the line at the end of the line seam.

用於面線開頭區段抓獲裝置的切換運動的凸輪控制器導致面線開頭區段抓獲裝置的精確運動控制。能夠提供另一凸輪控制器以允許拉線刀的切換運動。這兩個凸輪控制器的凸輪表面能夠如此配置以能夠圍繞共同旋轉軸線旋轉。所述至少一個凸輪控制器能夠具有與之關聯的起重筒。所述起重筒能夠配置為起重磁體或氣缸。The cam controller for the switching movement of the upper line segment capture device results in precise motion control of the upper line segment capture device. Another cam controller can be provided to allow switching motion of the wire cutter. The cam surfaces of the two cam controllers can be configured to be rotatable about a common axis of rotation. The at least one cam controller can have a lifting drum associated therewith. The lifting drum can be configured as a lifting magnet or cylinder.

配置成借助於切換裝置脫離接合且設置成將面線開頭區段抓獲裝置緊固在中性位置中的止動機構導致面線開頭區段抓獲裝置在中性位置中的安全定位。也可以提供類似的止動機構以用於拉線刀。A stop mechanism configured to be disengaged by means of the switching device and arranged to secure the upper thread beginning segment capture device in the neutral position results in a safe positioning of the upper thread front segment capture device in the neutral position. A similar stop mechanism can also be provided for the wire cutter.

配置成在切斷殘餘面線長之後移除殘餘面線長的抽吸裝置提供被切斷的殘餘面線長的安全移除。A suction device configured to remove the residual upper line length after cutting off the residual upper line length provides a safe removal of the cut residual upper line length.

利用根據本發明的縫紉機製造待形成在織物件中的線縫的線縫開頭面線的方法的優點與上文參考根據本發明的縫紉機說明的優點相同，線縫具有至多10mm的標稱過量線長，所述方法包括以下步驟：借助於縫紉針使面線的區段從織物件的上側至織物件的下側地移動穿過織物件；利用成環器拉拔面線開頭區段，直到整個面線開頭區段佈置在織物件的下側的下方；以面線抓獲器抓獲和夾持面線開頭區段，縫紉線縫同時供給織物件；以及採用面線刀在利用當供給織物件時產生的面線張力的同時從剩餘面線開頭區段切斷殘餘面線長。這種製造方法允許底線開頭區段被夾持以及切斷，所以在兩側上都獲得齊整的線縫開頭。The advantages of the method of manufacturing the seam opening line of the seam to be formed in the fabric member using the sewing machine according to the invention are the same as those explained above with reference to the sewing machine according to the invention, the seam having a nominal excess line of at most 10 mm Long, the method comprises the steps of: moving a section of the upper thread from the upper side of the fabric piece to the underside of the fabric piece through the fabric piece by means of a sewing needle; using a looper to pull the upper section of the upper thread until The entire upper line section of the upper thread is arranged below the lower side of the fabric member; the upper thread section is grasped and gripped by the upper thread catcher, the sewing thread seam is simultaneously supplied to the fabric member; and the upper thread cutter is used to feed the fabric piece. At the same time as the upper thread tension generated, the residual surface line length is cut off from the beginning section of the remaining upper thread. This manufacturing method allows the beginning section of the bottom thread to be clamped and cut, so that a smooth seam start is obtained on both sides.

較佳實施例之詳細說明 雙線鎖式線跡縫紉機1具有機架1a，機架具有包括支架3和成角度臂4的基板2，所述支架在豎直向上的方向上從基板延伸。所述臂4在頭部5中終止。在臂4中，臂軸6被安裝成旋轉。所述臂軸6驅動佈置在頭部5中的曲柄驅動器7，曲柄驅動器7包括線桿8。曲柄驅動器7操作性地連接到針把9，針把如此安裝在頭部5中以能夠軸向地移位。所述針把9在其下端處具有針10。針10能夠被曲柄驅動器7驅動以沿豎直軸線11往復上下運動。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A two-wire lock stitch sewing machine 1 has a frame 1a having a substrate 2 including a holder 3 and an angled arm 4 which extends from the substrate in a vertically upward direction. The arm 4 terminates in the head 5. In the arm 4, the arm shaft 6 is mounted to rotate. The arm shaft 6 drives a crank drive 7 arranged in the head 5, the crank drive 7 comprising a wire rod 8. The crank drive 7 is operatively coupled to a needle handle 9 which is mounted in the head 5 to be axially displaceable. The needle handle 9 has a needle 10 at its lower end. The needle 10 can be driven by the crank drive 7 to reciprocate up and down along the vertical axis 11.

笛卡爾xyz坐標系將在後文中用於簡化位置關係的表示。豎直軸線11沿這個坐標系的z-方向延伸。x-軸線垂直於圖1的繪圖平面延伸且進入圖1的繪圖平面，並且平行於縫紉機1的縫紉方向延伸。y-方向朝向圖1的左手側延伸。The Cartesian xyz coordinate system will be used later to simplify the representation of the positional relationship. The vertical axis 11 extends in the z-direction of this coordinate system. The x-axis extends perpendicular to the drawing plane of FIG. 1 and enters the drawing plane of FIG. 1 and extends parallel to the sewing direction of the sewing machine 1. The y-direction extends toward the left hand side of FIG.

針10引導面線13，面線也稱為上線且經由配置為線筒12的面線供應器供應到針10的孔眼、線張緊裝置和線桿8。面線13具有自由面線開頭區段13a。The needle 10 guides the upper thread 13, which is also referred to as the upper thread and is supplied to the eyelet of the needle 10, the wire tensioning device and the wire rod 8 via the upper thread feeder configured as the wire barrel 12. The upper thread 13 has a free upper line beginning section 13a.

基板2承載支撐板14，支撐板利用螺釘緊固到基板，其中織物件15被放置在支撐板上。支撐板14的一部分配置為針板16，針板設有允許下狗牙器17穿過的凹部，所述下狗牙器17也稱為底部供給器。所述狗牙器17具有允許針10穿過的針孔18。狗牙器17以已知的方式操作性地連接到設置在基板2下方的滑動和起重齒輪單元。The substrate 2 carries a support plate 14 which is fastened to the substrate by screws, wherein the fabric member 15 is placed on the support plate. A portion of the support plate 14 is configured as a needle plate 16 that is provided with a recess that allows the lower dog teeth 17 to pass through, and the lower dog teeth 17 is also referred to as a bottom feeder. The dog teether 17 has a pinhole 18 that allows the needle 10 to pass through. The dog teether 17 is operatively coupled to the sliding and hoisting gear unit disposed below the substrate 2 in a known manner.

成環器19佈置在支撐板14的下方，成環器19具有成環器本體20，成環器本體具有成環器梢部21。杯狀線筒殼體安裝到成環器本體20中，以容納配置為線筒22或線軸的成環線供應器。線筒22用作成環線供應器。成環線也稱為底線。The looper 19 is disposed below the support plate 14, and the looper 19 has a looper body 20 having a looper tip 21. A cup-shaped spool housing is mounted into the looper body 20 to receive a looped wire feeder configured as a spool 22 or spool. The bobbin 22 is used as a loop line supply. The loop line is also called the bottom line.

成環器19和針10一起代表線跡形成工具。針10用於引導面線。成環器19用於使面線圍繞底線成環。The looper 19 and the needle 10 together represent a stitch forming tool. Needle 10 is used to guide the upper thread. The looper 19 is used to loop the upper thread around the bottom line.

成環器19能夠圍繞在z-方向上延伸的豎直成環器軸線23旋轉。成環器本體20剛性地連接到同軸於成環器軸線23延伸的軸25。軸25被安裝成在旋擰到基板2的軸承支撐件26中旋轉。驅動軸27安裝到軸承支撐件26中，驅動軸連接到設置在軸承支撐件26內側的齒輪單元。齒輪單元具有1：2的傳動比，這意味著佈置在軸25上的成環器本體20對於驅動軸27的每個轉圈做出兩個轉圈。驅動軸27經由帶驅動器28操作性地連接到臂軸6。The looper 19 is rotatable about a vertical looper axis 23 that extends in the z-direction. The looper body 20 is rigidly coupled to a shaft 25 that extends coaxially to the looper axis 23. The shaft 25 is mounted for rotation in a bearing support 26 that is screwed to the base plate 2. The drive shaft 27 is mounted into a bearing support 26 that is coupled to a gear unit disposed inside the bearing support 26. The gear unit has a gear ratio of 1:2, which means that the looper body 20 arranged on the shaft 25 makes two turns for each revolution of the drive shaft 27. The drive shaft 27 is operatively coupled to the arm shaft 6 via a belt drive 28.

如圖2中示出的拉線刀29用於線上縫的末端處切斷面線13和成環線，拉線刀例如從文獻EP 1847641B1的類似構型中可知。拉線刀29剛性地連接到中空軸29a。拉線刀29被安裝成在軸承支撐件26中旋轉。A wire cutter 29, as shown in Fig. 2, is used for cutting the upper thread 13 and the looping line at the end of the seam, as is known from the similar configuration of document EP 1 847 641 B1. The wire cutter 29 is rigidly coupled to the hollow shaft 29a. The wire cutter 29 is mounted for rotation in the bearing support 26.

為了保持和供給織物件15，縫紉機1還具有壓腳30a和為了供給織物件與下狗牙器17相互作用的上供給器31a。這些部件、即壓腳30a和上供給器31a僅在圖1中示意性概括。In order to hold and feed the fabric member 15, the sewing machine 1 further has a presser foot 30a and an upper feeder 31a for supplying the fabric member to the lower dog teeth 17. These components, namely the presser foot 30a and the upper feeder 31a, are only schematically summarized in FIG.

縫紉機1例如具有圖2中示出的面線開頭區段抓獲裝置30。The sewing machine 1 has, for example, a noodle opening section catching device 30 shown in FIG. 2.

面線開頭區段抓獲裝置如此設置以能夠在例如圖2中示出的中性位置和例如圖4中示出的面線夾持位置之間切換。在面線夾持位置中，面線開頭區段13a被夾持在面線開頭區段抓獲裝置30和配對夾持體31之間(參見圖5)。配對夾持體31同時是用於線筒殼22的線筒殼保持器。The upper thread beginning section capture device is arranged to be switchable between a neutral position such as that shown in Figure 2 and an upper thread clamping position such as that shown in Figure 4. In the upper thread holding position, the upper thread start section 13a is sandwiched between the upper thread front section catching means 30 and the mating holder 31 (see Fig. 5). The mating holder 31 is simultaneously a bobbin case holder for the bobbin case 22.

面線開頭區段抓獲裝置30的面線抓獲器由面線抓獲叉32形成，面線抓獲叉具有兩個叉齒32a，面線開頭區段13a在所述兩個叉齒之間被引導到面線抓獲位置中。在面線開頭區段抓獲位置30的中性位置和面線夾持位置之間，也存在面線開頭區段13a已經被面線抓獲器32抓獲的面線抓獲位置。The upper thread catcher of the upper thread start section catching device 30 is formed by the upper thread catching fork 32 having the two fork teeth 32a, and the upper thread front section 13a is guided between the two tines The upper line is captured in the position. Between the neutral position of the gripping position 30 at the beginning of the upper thread section and the upper thread holding position, there is also a noodle gripping position in which the upper thread front section 13a has been captured by the upper thread catcher 32.

面線開頭區段抓獲裝置30非旋轉地連接到軸32b，所述軸在中空軸29a中延伸且在圖2中被虛線概括。軸32b安裝成在中空軸29a中旋轉。The upper thread beginning section capture device 30 is non-rotatably coupled to a shaft 32b that extends in the hollow shaft 29a and is outlined in FIG. 2 by a dashed line. The shaft 32b is mounted to rotate in the hollow shaft 29a.

縫紉機1還具有設置成切斷面線開頭區段13a的開頭線刀33(參見圖8)。在這個切割過程中，面線開頭區段在殘餘面線長13aa(例如，參見圖12)和面線開頭過量區段13ab(參見圖13)之間被切除，面線開頭過量區段也稱為從線縫突伸的線縫開頭面線。開頭線刀33具有剛性地緊固到狗牙器17的切割器34，換言之切割器是狗牙器的一體部件。切割器34由在縫紉方向上延伸的供給器17的基體部分36的底部邊緣形成。The sewing machine 1 also has a leading line cutter 33 (see Fig. 8) which is provided to cut the upper line section 13a. In this cutting process, the upper section of the upper thread is cut off between the residual facial length 13aa (for example, see Fig. 12) and the upper excess section 13ab (see Fig. 13) at the beginning of the upper thread, and the excess section at the beginning of the upper thread is also called The upper line is the seam starting from the seam. The opening line cutter 33 has a cutter 34 rigidly fastened to the dog teeth 17, in other words the cutter is an integral part of the dog teeth. The cutter 34 is formed by the bottom edge of the base portion 36 of the feeder 17 that extends in the sewing direction.

開頭線刀33同時用於切斷底線36的底線開頭區段。用於這個底線開頭區段36a(參見圖2)的底線開頭區段抓獲裝置由拉線刀29形成，拉線刀設置成在夾持位置中抵靠配置為底線夾持彈性體37的配對夾持體而夾持底線開頭區段36a，夾持位置同時是底線抓獲位置。這個底線夾持彈性體37在圖12中更加詳細地示出。The leading line cutter 33 is simultaneously used to cut off the beginning section of the bottom line of the lower thread 36. The bottom line beginning section catching means for this bottom line beginning section 36a (see Fig. 2) is formed by a wire cutter 29 which is arranged to abut the pair of clips which are configured to hold the elastic body 37 as a bottom thread in the clamping position. The bottom line beginning section 36a is held by the holder, and the clamping position is also the bottom line capturing position. This bottom thread clamping elastomer 37 is shown in more detail in FIG.

當利用拉線刀29切斷底線開頭區段36a時，殘餘底線長36aa(參見圖12)如此被切斷以維持短的底線開頭過量區段，所述底線開頭過量區段也稱為線縫開頭底線。When the bobbin start section 36a is cut by the wire cutter 29, the residual bobbin length 36 aa (see FIG. 12) is cut so as to maintain a short bottom line beginning excess section, and the bottom line beginning excess section is also called a seam. Start with the bottom line.

當切換面線開頭區段抓獲裝置30時，面線開頭區段抓獲裝置圍繞豎直旋轉軸線38旋轉。旋轉軸線38同時是設置成切換拉線刀29的旋轉軸線。When the upper line beginning section capture device 30 is switched, the upper line beginning section capture device rotates about the vertical axis of rotation 38. The axis of rotation 38 is simultaneously arranged to switch the axis of rotation of the wire cutter 29.

為了經由面線抓獲位置在中性位置和面線夾持位置之間切換面線開頭區段抓獲裝置30，提供切換裝置，其包括允許面線開頭區段抓獲裝置30的切換運動的起重磁體39和凸輪控制器。In order to switch the upper thread front section catching means 30 between the neutral position and the upper thread clamping position via the upper thread catching position, a switching device is provided which includes a lifting magnet allowing the switching movement of the upper thread front section catching means 30 39 and cam controller.

圖6示出用於面線開頭區段抓獲裝置30的這個切換裝置的細節。用於切換裝置包括輥40的凸輪控制器緊固到起重磁體39的起重活塞的自由端。在圖6中，輥40示出為處於接合位置，在接合位置中，輥接合切換凸輪表面41以控制面線開頭區段抓獲裝置30的切換運動。切換凸輪表面41配置為被驅動軸27驅動的回轉體42的周邊區段(參見圖11)。當起重磁體39起作用時輥40處於接合位置。當起重磁體39關閉時，輥40縮回且不接合切換凸輪表面41。Figure 6 shows details of this switching device for the upper thread beginning segment capture device 30. A cam controller for the switching device including the roller 40 is fastened to the free end of the lifting piston of the lifting magnet 39. In Fig. 6, the roller 40 is shown in an engaged position in which the roller engages the switching cam surface 41 to control the switching movement of the upper line segment capture device 30. The switching cam surface 41 is configured as a peripheral section of the rotary body 42 driven by the drive shaft 27 (see Fig. 11). The roller 40 is in the engaged position when the lifting magnet 39 is active. When the lifting magnet 39 is closed, the roller 40 retracts and does not engage the switching cam surface 41.

在中性位置中，面線開頭區段抓獲裝置30借助於包括止動器43和片簧44的止動機構緊固(參見圖3)，止動器43如此連接到面線開頭區段抓獲裝置30以使得圍繞旋轉軸線38不可旋轉，片簧與止動器43接合，所述片簧44部分地互補於止動器43。能夠通過啟動切換裝置釋放圖3中示出的止動器43與片簧44的所述接合，如例如與圖7比較變得明顯的。在中性位置中，拉線刀29也借助於包括止動器45的另一止動機構緊固(參見圖3)，止動器45如此連接到拉線刀29以使得圍繞旋轉軸線38不可旋轉，止動器45在中性位置中接合緊固到殼體的螺栓46。止動器45配置為部分地互補於螺栓46的止動叉。用於面線開頭區段抓獲裝置30的切換裝置的輥40安裝在止動器43的一部分中，止動器繼而非旋轉地連接到用於面線開頭區段抓獲裝置30的凸輪控制器的軸29a(參見圖2和6)。In the neutral position, the upper thread beginning section catching means 30 is fastened by means of a stop mechanism comprising a stopper 43 and a leaf spring 44 (see Fig. 3), and the stopper 43 is thus connected to the upper section of the upper thread to be caught. The device 30 is such that it is non-rotatable about the axis of rotation 38, and the leaf spring engages with a stopper 43, which is partially complementary to the stopper 43. The engagement of the stopper 43 and the leaf spring 44 shown in Fig. 3 can be released by actuating the switching means as will become apparent, for example, in comparison with Fig. 7. In the neutral position, the wire cutter 29 is also fastened by means of another stop mechanism comprising a stop 45 (see Fig. 3), the stop 45 being thus connected to the wire cutter 29 such that it is not possible to surround the axis of rotation 38 Rotating, the stopper 45 engages the bolt 46 fastened to the housing in the neutral position. The stopper 45 is configured to be partially complementary to the stop fork of the bolt 46. The roller 40 for the switching device of the upper line beginning section catching device 30 is mounted in a portion of the stopper 43, which is in turn connected non-rotatably to the cam controller for the upper thread front section catching device 30. Axis 29a (see Figures 2 and 6).

另一切換裝置允許拉線刀29在其中性位置和其切割位置之間切換。這個拉線刀切換裝置包括另一起重磁體47a和連接到所述拉線刀29的桿48，桿48繼而承載沒有更加詳細示出的輥，所述輥繼而能夠與用於拉線刀的切換運動的切換凸輪表面49接合(參見圖11)。桿48非旋轉地連接到中空軸29a(參見圖29)。切換凸輪表面49也是回轉體47的周邊部分。分別用於面線開頭區段抓獲裝置30和拉線刀29的切換運動的所述兩個切換凸輪表面41和49圍繞共同旋轉軸線50旋轉(參見圖11)。Another switching device allows the wire cutter 29 to switch between its neutral position and its cutting position. This wire cutter switching device comprises a further lifting magnet 47a and a rod 48 connected to the wire cutter 29, which in turn carries a roller which is not shown in more detail, which in turn can be used for switching with a wire cutter The moving switching cam surface 49 is engaged (see Figure 11). The rod 48 is non-rotatably coupled to the hollow shaft 29a (see Fig. 29). The switching cam surface 49 is also a peripheral portion of the revolving body 47. The two switching cam surfaces 41 and 49 for the switching movement of the upper thread start section catching device 30 and the wire cutter 29, respectively, are rotated about a common axis of rotation 50 (see Fig. 11).

當啟動起重磁體47a以將拉線刀29切換到切割位置時，切換裝置的桿48以傳力方式承載用於面線開頭區段抓獲裝置30的切換裝置的止動器43的延伸部51。只要這個傳力連接存在於桿48和延伸部51之間，面線開頭區段檢測裝置30的運動模式就被拉線刀29的驅動器驅動，所以面線開頭區段檢測裝置和拉線刀都在相同的旋轉方向上圍繞旋轉軸線38同步地移位。When the lifting magnet 47a is activated to switch the wire cutter 29 to the cutting position, the lever 48 of the switching device carries the extension 51 of the stopper 43 for the switching device of the upper thread start section catching device 30 in a force-transmitting manner. . As long as this force transmission connection exists between the rod 48 and the extension portion 51, the movement pattern of the upper thread front section detecting means 30 is driven by the driver of the wire cutter 29, so that the upper line front section detecting means and the wire cutter are both Displaced synchronously about the axis of rotation 38 in the same direction of rotation.

抽吸裝置52設置成在切斷殘餘面線長和底線長之後移除殘餘面線長13aa和底線長36aa，抽吸裝置包括抽吸導管，抽吸導管的進入開口53在圖12中以虛線示出。抽吸裝置52具有僅在圖12中示意性概括的負壓源54。The suction device 52 is arranged to remove the residual face length 13aa and the bottom line length 36aa after cutting off the residual face length and the bottom line length, the suction device comprising a suction conduit, the inlet opening 53 of the suction conduit being dotted in FIG. show. The suction device 52 has a negative pressure source 54 that is only schematically summarized in FIG.

為了如此製造待縫紉在織物件中的線縫55的線縫開頭面線(參見圖13)以提供具有至多10mm的過量標稱線縫長度A的面線開頭過量區段13ab，縫紉機操作如下：In order to thus manufacture the seam opening line (see Fig. 13) of the seam 55 to be sewn in the fabric member to provide an upper thread excess section 13ab having an excess nominal seam length A of at most 10 mm, the sewing machine operates as follows:

在第一步驟中，縫紉線縫55的第一線跡S1 ，所述第一線跡S1 比其他線跡Si (i=1至u；u=線縫中的線跡的數量)短。為此目的，借助於縫紉針10使包括面線開頭區段13a的面線13的前區段從織物件的上側至織物件的下側地移動穿過織物件15。這在圖1、2和4中示出。在這個過程中，成環器19的成環器梢部21抓獲形成在這個前面線區段中的面線環且將針線開頭區段13a拉出，直到整個面線開頭區段13a佈置在織物件的下側的下方。這種情況在圖5中示出。在這個拉拔過程期間，面線開頭區段抓獲裝置30從圖2中示出的中性位置移動到圖4和5中示出的抓獲位置中，這通過借助於切換凸輪表面41致動起重磁體39和凸輪控制器而實施。當已經拉出面線開頭區段13a時，面線開頭區段被面線抓獲叉32抓獲且如此抵靠配對夾持體31被夾持，以使得當面線開頭區段抓獲裝置30處於面線夾持位置時面線開頭區段由此被緊固地保持。在抓獲位置和夾持位置之間，面線抓獲叉32在順時針方向上圍繞旋轉軸線38再次旋轉些許。In a first step, the sewing thread sewing the first stitch line 55 is S 1, S 1 of the first stitch trace lines other than S i (i = 1 to U; u = number of stitches of the seam line) short. For this purpose, the front section of the upper thread 13 comprising the upper section 13a of the upper thread is moved through the fabric part 15 from the upper side of the fabric piece to the lower side of the fabric piece by means of the sewing needle 10. This is illustrated in Figures 1, 2 and 4. In this process, the looper tip 21 of the looper 19 captures the upper thread loop formed in this front line section and pulls the needle thread beginning section 13a until the entire upper thread front section 13a is placed on the fabric. Below the underside of the piece. This situation is illustrated in Figure 5. During this drawing process, the upper thread start section catching device 30 is moved from the neutral position shown in Fig. 2 to the catching position shown in Figs. 4 and 5, which is actuated by means of the switching cam surface 41. The heavy magnet 39 and the cam controller are implemented. When the upper thread opening section 13a has been pulled out, the upper section of the upper thread is caught by the upper thread catching fork 32 and thus clamped against the mating holder 31 so that when the upper thread front section catching device 30 is in the upper thread clamp The front section of the upper thread is thus held securely when the position is held. Between the capture position and the gripping position, the upper thread catching fork 32 is rotated a little further in the clockwise direction about the axis of rotation 38.

面線抓獲器32的切換路徑、換言之中性位置、面線抓獲位置和面線夾持位置之間的面線開頭區段抓獲裝置30的切換運動線上縫的側部上延伸，底線36從所述側部供應到線縫55。The switching line between the upper thread catcher 32, in other words, the neutral position, the upper thread catching position, and the upper thread clamping position, extends on the side of the slit on the switching movement of the upper section catching device 30, and the bottom line 36 is The side portions are supplied to the seam 55.

在這個縫紉過程期間，底線開頭區段36a也由於由拉線刀29提供的夾持力而抵靠於底線夾持彈性體37被夾持且因此被緊固地保持。During this sewing process, the bottom line beginning section 36a is also clamped against the bottom thread holding elastic body 37 due to the clamping force provided by the wire cutter 29 and thus held securely.

在短的第一線跡S1 之後，現在以常規較大的線跡長度縫紉線跡S2 、…、Su 。同時，利用狗牙器17在縫紉方向x上移動織物件15，從而引起所述兩個開頭線區段、換言之面線開頭區段13a和底線開頭區段36a在它們的相應夾持點和線縫開頭之間被張緊。只要所述兩個開頭線區段受到充分的張緊量，所述兩個開頭線區段13a、16a就被引導通過狗牙器的切割器34，且只要供給線張緊充分，所述兩個開頭線區段就被切割器34切除。After the short first stitch S 1, now in a conventional sewing stitch length larger track S 2, ..., S u. At the same time, the fabric piece 15 is moved in the sewing direction x by the dog teeth 17, thereby causing the two leading line segments, in other words the upper line beginning section 13a and the bottom line beginning section 36a, at their respective nip points and lines The seams are tensioned between the beginnings. As long as the two leading line segments are subjected to a sufficient amount of tension, the two leading line segments 13a, 16a are guided through the cutter 34 of the dog teeth, and as long as the supply line is tensioned sufficiently, the two The beginning line segments are cut by the cutter 34.

因此通過利用當供給織物件15時產生的面線張力實施採用開頭線刀33的從剩餘面線13切斷殘餘面線長13aa。Therefore, the residual face length 13aa is cut from the remaining upper thread 13 by the leading line cutter 33 by utilizing the upper thread tension generated when the fabric member 15 is fed.

雖然不要求但是仍可以使用與切割器34相互作用的配對刀。A pairing knife that interacts with the cutter 34 can still be used, although not required.

由於在狗牙器17處直接切割，非常接近於線縫55開頭地切斷兩個線開頭區段13a、36a，所以獲得具有至多10mm的標稱過量線縫長度A的非常短的面線開頭過量區段13ab(參見圖13)。相同的情況也應用於平行於面線開頭過量區段延伸的底線開頭過量區段。Due to the direct cutting at the dog teeth 17, the two line beginning sections 13a, 36a are cut very close to the beginning of the seam 55, so that a very short noodle opening with a nominal excess seam length A of at most 10 mm is obtained. Excess section 13ab (see Figure 13). The same applies to the excess section at the beginning of the bottom line parallel to the extension of the excess section at the beginning of the upper line.

1‧‧‧雙線鎖式線跡縫紉機1‧‧‧Double-line lock stitch sewing machine

1a‧‧‧機架1a‧‧‧Rack

2‧‧‧基板2‧‧‧Substrate

3‧‧‧支架3‧‧‧ bracket

4‧‧‧臂4‧‧‧ Arm

5‧‧‧頭部5‧‧‧ head

6‧‧‧臂軸6‧‧‧Bear axis

7‧‧‧曲柄驅動器7‧‧‧Crank Drive

8‧‧‧線桿8‧‧‧ pole

9‧‧‧針把9‧‧‧ needle

10‧‧‧縫紉針10‧‧‧Sewing needle

11‧‧‧豎直軸線11‧‧‧ vertical axis

12‧‧‧面線供應器12‧‧‧Face line feeder

13‧‧‧面線13‧‧‧Face

13a‧‧‧開頭區段；線區段13a‧‧‧ beginning section; line section

13aa‧‧‧面線長13aa‧‧‧Face line length

13ab‧‧‧線縫開頭面線；面線開頭過量區段13ab‧‧‧ seam beginning line; excess line at the beginning of the line

14‧‧‧支撐板14‧‧‧Support board

15‧‧‧織物件15‧‧‧Woven pieces

16‧‧‧針板16‧‧‧ needle board

16a‧‧‧線區段16a‧‧‧Line section

17‧‧‧狗牙器17‧‧‧ dog teether

18‧‧‧針孔18‧‧‧ pinhole

19‧‧‧成環器19‧‧‧ Ringer

20‧‧‧成環器本體20‧‧‧The looper body

21‧‧‧成環器梢部21‧‧‧The end of the looper

22‧‧‧底線供應器；線筒；線筒殼22‧‧‧Bottom line supply; wire barrel; wire barrel housing

23‧‧‧成環器軸線23‧‧‧Activator axis

25‧‧‧軸25‧‧‧Axis

26‧‧‧軸承支撐件26‧‧‧ bearing support

27‧‧‧驅動軸27‧‧‧Drive shaft

28‧‧‧驅動器28‧‧‧ drive

29‧‧‧拉線刀29‧‧‧Wire cutter

29a‧‧‧中空軸29a‧‧‧ hollow shaft

30‧‧‧抓獲裝置30‧‧‧ Capture device

30a‧‧‧壓腳30a‧‧‧Foot press

31‧‧‧配對夾持體31‧‧‧ Pairing holder

31a‧‧‧上供給器31a‧‧‧Upper feeder

32‧‧‧面線抓獲器；面線抓獲叉32‧‧‧Face line catcher; upper thread capture fork

32a‧‧‧叉齒32a‧‧‧ tines

32b‧‧‧軸32b‧‧‧Axis

33‧‧‧開頭線刀33‧‧‧ starting line knife

34‧‧‧切割器34‧‧‧Cutter

35‧‧‧基體部分35‧‧‧ base part

36‧‧‧底線；基體部分36‧‧‧ bottom line; base part

36a‧‧‧底線開頭區段36a‧‧‧The beginning of the bottom line

36aa‧‧‧底線長36aa‧‧‧Bottom line length

37‧‧‧夾持彈性體37‧‧‧Clamping elastomer

38‧‧‧旋轉軸線38‧‧‧Rotation axis

39‧‧‧起重磁體切換裝置；凸輪控制器39‧‧‧ Lifting magnet switching device; cam controller

40‧‧‧凸輪控制器；輥40‧‧‧ cam controller; roller

41‧‧‧切換裝置；凸輪控制器；凸輪表面41‧‧‧Switching device; cam controller; cam surface

42‧‧‧回轉體42‧‧‧Revolving body

43‧‧‧止動機構；止動器43‧‧‧stop mechanism; stopper

44‧‧‧止動機構；片簧44‧‧‧stop mechanism; leaf spring

45‧‧‧止動器45‧‧‧stop

46‧‧‧螺栓46‧‧‧Bolts

47a‧‧‧驅動器；切換裝置47a‧‧‧ drive; switching device

48‧‧‧桿；切換裝置48‧‧‧ rod; switching device

49‧‧‧凸輪表面；切換裝置49‧‧‧ cam surface; switching device

50‧‧‧旋轉軸線50‧‧‧Rotation axis

51‧‧‧延伸部51‧‧‧Extension

52‧‧‧抽吸裝置52‧‧‧Suction device

53‧‧‧開口53‧‧‧ openings

54‧‧‧負壓源54‧‧‧Negative source

55‧‧‧線縫55‧‧‧ seam

A‧‧‧線長A‧‧‧Line length

S1‧‧‧第一線跡S 1 ‧‧‧ first stitch

Si‧‧‧其他線跡S i ‧‧‧Other stitches

後文將借助於附圖更加詳細地說明本發明的示例性實施方式，其中 圖1示出雙線鎖式線跡縫紉機的前側的示意圖，視圖顯露雙線鎖式線跡縫紉機的一些內部細節； 圖2示出在縫紉過程開始之前縫紉機的線引導、線夾持和線切割部件的透視圖，省略除了針板之外的縫紉機的支撐板、以及阻擋觀察示出部件的其他部件，面線開頭區段抓獲裝置和拉線刀都示出位於初始或中性位置； 圖3示出用於圖2中示出的部件的驅動和安裝部件的另一透視圖； 圖4類似於圖2示出在借助於成環器拉出的面線開頭區段已經被切換到面線抓獲位置的面線開頭區段抓獲裝置抓獲和夾持之後的部件的視圖； 圖5示出在根據圖4的位置中的部件但是從更加銳角的角度看去的俯視圖； 圖6示出從不同角度看去的根據圖3的驅動和安裝部件，其中，用於面線開頭區段抓獲裝置的切換運動的凸輪控制器的輥與所述凸輪控制器的凸輪表面接合； 圖7示出從如在圖3中的類似位置看去的用於面線開頭區段抓獲裝置和拉線刀的驅動和切換部件的瞬時位置，其中，面線開頭區段抓獲裝置的運動模式的一部分被拉線刀的驅動器驅動； 圖8示出根據圖2的視圖中的一些部件的透視圖，其中省略針板且大致從圖2中的觀察方向VIII看去，所述圖示出包括切割器的繞線筒進給器等等，切割器配置為用於切斷面線開頭區段的殘餘面線長的開頭線刀； 圖9、10從類似於圖4的觀察方向示出在切斷被拉線刀夾持的面線開頭區段以及底線開頭區段期間和之後的部件，其中，兩個線開頭區段仍被面線開頭區段抓獲裝置和拉線刀夾持； 圖11從類似於圖3的角度示出當在縫紉線縫之後為了面線末端區段和底線末端區段在中性位置和切割位置之間切換拉線刀時的驅動部件； 圖12示出大致從圖2中的觀察方向XII看去的透視圖，其是在釋放被夾持且切斷的線開頭區段之後的面線開頭區段抓獲裝置和拉線刀的暫態位置，因此允許線開頭區段借助於抽吸裝置移除；以及 圖13示出以根據圖1至12的縫紉機縫紉的線縫的示意性俯視圖，所述線縫具有較短的第一線跡，以示出如此製造以具有限定的標稱過量線長的線縫開頭面線和線縫開頭底線。Exemplary embodiments of the present invention will be described in more detail hereinafter with the aid of the accompanying drawings in which FIG. 1 shows a schematic view of the front side of a two-wire lock stitch sewing machine, the view revealing some internal details of the two-wire lock stitch sewing machine; Figure 2 is a perspective view showing the thread guiding, thread clamping and wire cutting members of the sewing machine before the start of the sewing process, omitting the support plate of the sewing machine except the needle plate, and blocking other parts of the member, the upper line Both the segment capture device and the wire cutter are shown in an initial or neutral position; Figure 3 shows another perspective view of the drive and mounting components for the components shown in Figure 2; Figure 4 is similar to Figure 2 A view of the component after the beginning of the upper line of the upper thread that has been switched by means of the looper has been switched to the upper thread of the upper thread capture position after the gripping device has been gripped and clamped; FIG. 5 shows the position according to FIG. a top view of the component in a sharper angle; FIG. 6 shows the drive and mounting component according to FIG. 3 from a different perspective, wherein the cam for the switching movement of the upper thread segment capture device The roller of the controller is engaged with the cam surface of the cam controller; Figure 7 shows the drive and switching components for the upper line segment capture device and the wire cutter as seen from a similar position as in Figure 3 a momentary position in which a portion of the motion pattern of the upper line segment capture device is driven by the driver of the wire cutter; FIG. 8 shows a perspective view of some of the components in the view according to FIG. 2, wherein the needle plate is omitted and substantially Looking at the viewing direction VIII in 2, the figure shows a bobbin feeder or the like including a cutter configured as a leading line cutter for cutting the residual face length of the beginning section of the upper thread; Figures 9 and 10 show, in a direction similar to that of Figure 4, the components during and after the cutting of the upper section of the upper thread and the beginning section of the lower thread held by the wire cutter, wherein the two line beginning sections are still The upper thread front section catching device and the wire cutter are clamped; FIG. 11 shows from the angle similar to FIG. 3 when the seam line end section and the bottom thread end section are in the neutral position and the cutting position after the sewing seam Driving member when switching the wire cutter; Figure 12 shows a perspective view from the viewing direction XII in Fig. 2, which is the transient position of the upper section of the upper line grabbing device and the wire cutter after releasing the lined section of the clamped and cut line, thus allowing The beginning portion of the thread is removed by means of a suction device; and FIG. 13 shows a schematic plan view of a seam sewn with a sewing machine according to FIGS. 1 to 12, the seam having a shorter first stitch to show The seam start line and the seam start bottom line having a defined nominal excess line length are thus manufactured.

Claims (10)

一種雙線鎖式線跡縫紉機，包括： -機架， -面線供應器， -底線供應器， -線跡形成工具，其包括用於引導面線的縫紉針和用於使面線圍繞底線成環的成環器， -面線開頭區段抓獲裝置，其能夠在下述位置之間切換 --中性位置， --面線抓獲位置，在面線抓獲位置中，面線開頭區段被面線開頭區段抓獲裝置的面線抓獲器抓獲，以及 --面線夾持位置，在面線夾持位置中，面線開頭區段在面線開頭區段抓獲裝置和配對夾持體之間被牢固地夾持到機架， -用於切斷面線開頭區段的開頭線刀。A two-wire lock stitch sewing machine comprising: - a frame, - an upper thread feeder, - a bottom thread supply, a stitch forming tool including a sewing needle for guiding the upper thread and for winding the upper thread around the lower thread Loop-forming looper, - the upper line segment capture device, which is capable of switching between - neutral position, - upper line capture position, in the upper line capture position, the upper line of the upper line is The upper thread catcher of the upper section of the upper thread captures the gripper, and the upper thread clamp position, in the upper thread clamp position, the front section of the upper thread line captures the device and the mating clamp body at the beginning of the upper thread line The case is firmly clamped to the frame, - the first line cutter for cutting the beginning section of the upper line. 如請求項1所述的縫紉機，其特徵在於，面線開頭區段抓獲裝置的面線抓獲器配置為面線抓獲叉。A sewing machine according to claim 1, characterized in that the upper thread catcher of the upper line segment catching device is configured as a needle thread catching fork. 如請求項1或2所述的縫紉機，其特徵在於包括用於待縫紉的織物件的狗牙器，開頭線刀包括剛性地緊固到狗牙器的切割器。A sewing machine according to claim 1 or 2, characterized in that it comprises a dog tooth for a fabric member to be sewn, the head knife comprising a cutter rigidly fastened to the dog teeth. 如請求項3所述的縫紉機，其特徵在於，切割器配置為在狗牙器的基體部分中的切割邊緣。A sewing machine according to claim 3, characterized in that the cutter is configured as a cutting edge in the base portion of the dog teeth. 如請求項1至4中任一項所述的縫紉機，其特徵在於包括配置成線上縫的末端處切斷面線和底線的拉線刀。A sewing machine according to any one of claims 1 to 4, characterized in that it comprises a wire cutter which is configured to cut the upper thread and the lower thread at the end of the seam. 如請求項5所述的縫紉機，其特徵在於，配置成切換面線開頭區段抓獲裝置的切換裝置如此配置以使得面線開頭區段抓獲裝置的運動模式的至少一部分被拉線刀的驅動器驅動。The sewing machine of claim 5, wherein the switching device configured to switch the upper line segment capture device is configured such that at least a portion of the movement mode of the upper line segment capture device is driven by the driver of the wire cutter . 如請求項1至6中任一項所述的縫紉機，其特徵在於包括用於面線開頭區段抓獲裝置的切換運動的凸輪控制器。A sewing machine according to any one of claims 1 to 6, characterized in that it comprises a cam controller for switching movement of the upper line section catching means. 如請求項1至7中任一項所述的縫紉機，其特徵在於，面線開頭區段抓獲裝置如此配置以使得其被止動單元緊固在中性位置，止動單元包括配置成借助於切換裝置脫離接合的止動機構。A sewing machine according to any one of claims 1 to 7, characterized in that the upper thread start section catching means is configured such that it is fastened in the neutral position by the stop unit, the stop unit comprising The switching device is disengaged from the stop mechanism. 如請求項1至8中任一項所述的縫紉機，其特徵在於包括抽吸裝置，其配置成在切斷殘餘面線長之後移除所述殘餘面線長。A sewing machine according to any one of claims 1 to 8, characterized in that it comprises a suction device configured to remove the residual noodle length after cutting off the remaining face length. 一種利用如請求項1至9中任一項所述的縫紉機製造待形成在織物件中的線縫的線縫開頭面線的方法，線縫具有至多10mm的標稱過量線長，所述方法包括以下步驟： -借助於縫紉針使面線的區段從織物件的上側至織物件的下側地移動穿過織物件， -利用成環器拉拔面線開頭區段，直到整個面線開頭區段佈置在織物件的下側的下方， -以面線抓獲器抓獲且夾持面線開頭區段， -縫紉線縫同時供給織物件， -採用面線刀在利用當供給織物件時產生的面線張力的同時從剩餘面線開頭區段切斷殘餘面線長。A method for producing a seam opening line of a seam to be formed in a fabric member by using the sewing machine according to any one of claims 1 to 9, the seam having a nominal excess line length of at most 10 mm, the method The method comprises the steps of: - moving the section of the upper thread from the upper side of the fabric piece to the underside of the fabric piece by means of the sewing needle through the fabric part, - drawing the front section of the upper thread with the looper until the entire upper thread The beginning section is arranged below the lower side of the fabric piece, - the upper thread catcher grips and grips the upper section of the upper thread, - the sewing thread seam simultaneously feeds the fabric piece, - the upper thread cutter is used when the fabric piece is used The remaining upper thread length is cut off from the beginning section of the remaining upper thread while the upper thread tension is generated.
TW107104355A 2017-02-08 2018-02-07 Double lockstitch sewing machine and method of producing a seam beginning needle thread TW201833404A (en)

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