517120 A7 B7 五、發明説明（3 (請先閲讀背面之注意事項再填寫本頁) 捕捉構件20朝落針位置靠近至尚未接觸壓布腳丨4接觸之位 置。疋故，布8之上勢必留下20 mm之上線6，而須於縫製後 進行切線作業（俗稱「摘線」），由作業者切斷殘留之上線6， 需要龐大的勞力與時間。此外，在缝製鞋子和皮包之表面 時，若上線6之上端殘留於表面，製品將不甚美觀。如此， 乃需增加一項作業，由作業者將表面之上線6拉至裏側，而 使之不能由表面看見線端，此亦需相當多的勞力和時間。 套口用縫紉機及刺繡用縫紉機等係設置一可一邊保持 布、並一邊相對於針之位置而水平移動之壓布腳框，作為 壓布用之壓布機構。此種縫紉機將依縫製樣式及縫製物種 類之不同，而使壓布腳框的形狀不同，或使開始縫製時針 、言 和壓布腳框的關係位置有所不同。因此，若在此等縫切機 上使用如上述上線端部保持裝置般由布8上側捕捉上線6之 構仏時，即須在每次改變縫製步驟時調整於落針近處保持 ·! 上線6之上線捕捉構件2〇的待機位置，如此勢將花費極大的 勞力和時間。 而且，糟上線捕捉構件保持上線時之保持力還須微妙 地調整。例如，如上述構造之上線端部保持裝置，必須取 得與第1針時心㈣上線拉向«側之力量的平衡。作， 依線的種類與縫製條件的不同，第i針時梭心@將上線拉向 布裏側之力置也各有不同。使用習知板狀彈黃Μ等彈性體 來保持上線之機構，即無法於於第崎完全保持上線，結果 便產生了巢狀線捲’若為了防止此等情況之發生而改 本紙張尺度適用t國國家標準⑽幻M規格⑵Ο·7公着） -6- 517120 A7 • * —---— _ B7___ -五、發明説明（4 ) 採較強之彈性體，則會造成在上線捕捉構件2〇返回退避位 - 置時上線端不能脫離，反而拉扯布第，使縫製物產生皺摺 . 等的問題。 因此，本發明之一般目的在提供一種缝紉機之巢狀線 • 捲防止裝置，可有效防止巢狀線捲之發生。 本發明之另一目的，在提供一種縫紉機之巢狀線捲防 φ 止裝置，該裝置無須依壓布機構之位置與形狀而進行上線 捕捉構件之位置的調整。 本發明之再一目的在提供一種缝紉機之巢狀線捲防止 裝置’該裝置可於非常接近落針時之位置捕捉上線，而使 殘留於布裏面之上線端部長度非常短。 此外，本發明又一目的則在提供一種縫紉機之巢狀線 捲防止裝置，該裝置可輕易調整保持上線時之保持力。 為達成上述目的，本發明乃提供一種縫紉機之巢狀線 捲防止裝置’該裝置係於一備有切線裝置之鎖式線跡縫紉 孀. 機中，於布與梭心匣之間具有一上線端部保持構件，而該 上線端部保持構件則係用以保持第1針眼時貫穿至縫布裏 側之上線端部者。 該上線端部保持構件可由薄板狀構件及線圈狀構件構 成。 又’ δ亥切線裝置疋在布下面切斷上線及下線中之至少 . 一方，且該上線端部保持構件並可在第一針眼上線貫穿之 待機位置、保持上線之保持位置及避免與切線裝置相干擾 之退避位置等三個位置間移動。 本紙張尺度適用中國國家標準（CNS) Α4規格（210X297公釐） .....................裝------------------、可--------------線· (請先聞讀背面之注意事項再填寫本頁) -7- 517120 A7 B7 五、發明説明（5 更理心的疋’並设有一可調整前述上線端部保持構件 對上線端部之保持力的調整裝置。 以下’根據圖示詳細說明本發明。 第1圖中’在鏠紉台30上所設之縫紉床32上固定有一縫 初機頭部34。壓布腳框36係構造成可上下移動以便壓住縫 製物丄下板38則係構造成與壓布腳框36_起挾持著縫初物 的狀態下，配合縫製之式樣於水平面上移動。 在縫紉機頭部34安裝有裝針桿4〇，該裝針桿4〇係可連 動於圖示中未示之主軸的轉冑而上下移動，針桿4〇下端並 安裝有縫針42。縫紉床32上固定有針板44,針板44上則形 成有縫針42下降時可通過之針孔46。縫紉床32更固定有一 與針板44幾乎位在同一面的布台48。 此外，第1圖中雖未顯示，但事實上針板44下部並設置 有用以收納下線之梭心、於縫針42下降時用以捕捉上線 環而與下線纏繞之梭心匣機構、以及於縫製完畢時用以 斷上線與下線之斷切線機構。而此切線機構上則設有一 開始縫製時用以調節由針頭所露出之線長的公知裝置。 在第2及第3圖中，針板44之裏面設有一可動之小刀 及一固定之小刀52。此可動之小刀50係可於縫製完畢時在 旋轉中心50C的周圍旋動，藉此使其先端部往復移動捕捉 上線與下線中至少一方，而固定小刀52則可藉其與可動小 刀50之相咬合而在布的下側切斷上線與下線。 54係裝置於布台48之巢狀線捲防止裝置，具有薄板狀 抓線板（薄板狀構件）5 6、由鋼琴線所形成並安裝成可對 圈 切 在 50 此 lit:: (請先閲讀背面之注意事項再填寫本頁) 訂丨 ·%. 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐） •8- 517120 A7 B7 五、發明説明（6 ) 抓線板56移動之抓線筘（線筘狀構件）58、及固定於抓線板 56上以防止抓線筘脫落之導板6〇。抓線板56及抓線筘58構 成上線端部保持構件。而抓線筘58則經由連結器62連結於 抓線筘缸筒64，而藉抓線筘缸筒64驅動之。抓線板56及抓 線筘缸筒64則固定於缸筒台66上。 巢狀線捲防止裝置54更具有一固定於布台48之基板70 。而此基礎板70上則固定有一抓線板缸筒68。缸筒台66藉 此抓線板缸筒68而呈可移動之狀態。藉此抓線板缸筒68之 驅動，固定在缸筒台66的抓線板56及抓線筘缸筒64亦一起 移動，但抓線板56則構成可藉此移動而在對針孔46接近及 退避方向之移動。 抓線筘缸筒64藉空氣管72連接於圖中未示之電磁閥A 。在抓線筘缸筒64突出側之氣體供給路徑中途設置有減壓 門閥（圖中未示），可調整抓線筘58之驅動力。電磁閥A為 ON時，抓線筘缸筒64呈吸引狀態，如第7圖所示抓線筘58 之先端部58a呈與抓線板56之先端部56a相隔離之狀態。其 次，當電磁閥A為OFF時，抓線筘缸筒64將呈突出狀態，如 第8圖所示，抓線筘58之先端部58a形成與抓線板56之先端 部56a相之近的狀態。又，第2圖及第3圖則顯示電磁閥呈 ON之狀態者。 抓線板缸筒68藉空氣管74連接於圖中未示之電磁閥B 。電磁閥B為ON時，抓線板缸筒68呈突出狀態，抓線板56 則呈接近針孔46附近之狀態。其次，當電磁閥B為OFF時， 抓線板缸筒68將呈吸引狀態，抓線板56由針孔46脫離 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐） -9- ......................裝................、玎------------------線- (請先閲讀背面之注意事項再填寫本頁) 517120 A7 B7 五、發明說明（7 ) 而呈退避狀態。第2圖及第3圖則顯示電磁閥b呈on之狀態 者。 在第4圖中，若藉縫紉機的踏板等進行縫紉機旋轉命 令，即縫製開始命令，則電磁閥A及電磁閥B即呈ON之狀 態，如第2圖及第3圖所示，針孔46位在抓線筘58及抓線板 56間。此位置係第1針眼等待上線6貫穿之待機位置。即， 此時由於主軸開始旋轉，第1針眼之針乃貫穿布，而梭心 ϋ構件則在布下捕捉此針線，藉此上線6乃如第7圖所示垂 於布下，並通過抓線板56與抓線筘58之間。 之後’縫幼機繼續旋轉，裝針桿達上死點時則出現裝 針才干上死點#號’ 一旦接收到此信號，電磁閥Α便呈〇FF ，因此裝置乃呈第5圖之狀態。此時，如第8圖所示，上線 6為抓線筘58及抓線板56所挾持。因此，第8圖所顯示之位 置即上線6為抓線筘58及抓線板56所保持之保持位置。 經濟部智慧財產局員工消費合作社印製 (請先閱讀背面之注咅？事項再填寫本頁) 其後，若縫紉機持續旋轉，則圖中未示之天秤朝向上 死點，藉此乃產生將上線6上拉之力。此時，雖上線6為抓 線筘58及抓線板56所保持，但該保持力則藉著減壓閥之調 節而比天秤的拉起力弱，又，由於天秤之拉起力係由調線 器所賦與之上線張力來決定，因此只要依此調線器之調整 情形調整減壓閥即可。 因此，在天秤到達上死點時，由布下露出之上線6將 呈如第9圖所不，變得更短。此時，若能盡可能使布下殘 留之上線6長度越短，巢狀線捲自將不易產生。而未設置 如本實施態樣之抓線裝置的習知縫紉機若將殘留線長極端 -10- 517120 經濟部智慧財產局員工消費合作社印製 A7 五、發明說明（8 ) 減少’則將由於第"十時天秤向上拉的力道，而使上線自 布中脫落，造成跳針。517120 A7 B7 V. Description of the invention (3 (Please read the precautions on the back before filling in this page) The capture member 20 approaches the needle drop position to the position where it has not touched the presser foot 丨 4. Therefore, the cloth 8 is bound to The upper thread 6 of 20 mm is left, and the thread trimming operation (commonly known as "thread removal") must be performed after sewing. The operator needs to cut off the remaining upper thread 6, which requires a lot of labor and time. In addition, when sewing shoes and bags, On the surface, if the upper end of the upper line 6 remains on the surface, the product will not be very beautiful. Therefore, an additional operation is required, and the operator will pull the upper line 6 from the surface to the inner side, so that the line end cannot be seen from the surface. A considerable amount of labor and time is also required. The quilting sewing machine and embroidery sewing machine are equipped with a cloth presser foot frame that can hold the cloth and move horizontally relative to the position of the needle as a cloth pressing mechanism. This type of sewing machine will make the shape of the presser foot frame different according to the sewing pattern and the type of sewing product, or the position of the relationship between the needle, the needle and the presser foot frame when sewing starts. Therefore, if these Seam When the cutting machine uses the structure for capturing the upper thread 6 from the upper side of the cloth 8 like the above-mentioned upper thread end holding device, it must be adjusted and held near the needle drop every time the sewing step is changed!! The upper thread catching member 2 of the upper thread 6 In the standby position, this will take a lot of labor and time. Moreover, the holding force of the upper thread catching member when holding the upper thread must be finely adjusted. For example, as described above, the upper end retaining device of the upper thread must be obtained with the first stitch. The balance of the power of the heart to pull the thread toward the «side. Operation, depending on the type of thread and the sewing conditions, the force at the i-th shuttle @ pulls the thread to the side of the cloth is different. Use the conventional plate shape The mechanism that keeps the elastic body such as yellow M from holding the line, that is, it cannot be fully maintained in Yuzaki. As a result, a nested thread roll is produced. If the paper size is changed to prevent this, the national standard of the country is applicable. Magic M specification (⑵〇 · 7)) -6- 517120 A7 • * —---- _ B7___ -V. Description of the invention (4) Using a strong elastomer will cause the capture member 20 to return to the retreat position. -Cannot be online at the time of setting It detached and pulled the cloth first, causing wrinkles and other problems. Therefore, the general purpose of the present invention is to provide a nested thread winding device for a sewing machine, which can effectively prevent the occurrence of a nested thread roll. Another object of the present invention is to provide a nested thread roll prevention φ stop device for a sewing machine, which does not need to adjust the position of the upper thread catching member according to the position and shape of the cloth pressing mechanism. Still another object of the present invention is to provide a nest-like thread roll preventing device of a sewing machine 'which can catch the upper thread at a position very close to the needle drop, so that the length of the end of the thread remaining on the inside of the cloth is very short. In addition, another object of the present invention is to provide a nest-like thread curl prevention device for a sewing machine, which can easily adjust the holding force when holding the thread. In order to achieve the above-mentioned object, the present invention is to provide a nest-like thread roll prevention device of a sewing machine. The device is a lock stitch sewing machine equipped with a thread cutting device. In the machine, an upper thread is provided between the cloth and the bobbin case. The end holding member, and the upper thread end holding member is used to hold the end of the thread which penetrates to the back side of the seam when the first needle eye is held. The upper-line end holding member may be composed of a thin plate-like member and a coil-like member. Also 'δHai thread cutting device 切断 cuts at least one of the upper and lower threads under the cloth. One side, and the upper thread end holding member can be in the standby position where the first needle penetrates the upper thread, maintains the upper thread holding position, and avoids the thread cutting device. Move between the three positions, such as the interfering retreat position. This paper size is applicable to China National Standard (CNS) Α4 specification (210X297 mm) .................------------- ------- 、 may -------------- line · (Please read the notes on the back before filling in this page) -7- 517120 A7 B7 V. Description of the invention ( 5 More thoughtful 疋 'and is provided with an adjusting device that can adjust the holding force of the upper-line end holding member on the upper-line end. The following is a detailed description of the present invention based on the illustration. In the first figure,' on the sewing table 30 ' The sewing machine 32 is provided with an initial sewing head 34. The cloth presser foot frame 36 is configured to be movable up and down to hold the sewing product. The lower plate 38 is configured to hold the cloth presser foot frame 36_. In the state of the initial sewing object, it moves on the horizontal surface in accordance with the sewing pattern. A sewing rod 40 is attached to the head 34 of the sewing machine, and the sewing rod 40 can be moved up and down in conjunction with the rotation of a spindle not shown in the figure. Move, the lower end of the needle bar 40 is equipped with a needle 42. A needle plate 44 is fixed on the sewing bed 32, and a needle hole 46 is formed on the needle plate 44 when the needle 42 is lowered. The sewing bed 32 is further fixed with a needle plate 44 Almost on the same side台 48. In addition, although not shown in the first figure, in fact, a bobbin mechanism for accommodating the lower thread is provided at the lower part of the needle plate 44 and a bobbin case mechanism for catching the upper loop and tangling the lower thread when the needle 42 is lowered. And a thread-cutting mechanism for cutting the upper thread and the lower thread when sewing is completed. The thread-cutting mechanism is provided with a well-known device for adjusting the length of the thread exposed by the needle when sewing is started. In the second and third figures, Inside the needle plate 44 is a movable small knife and a fixed small knife 52. This movable small knife 50 can be rotated around the rotation center 50C when sewing is completed, so that the leading end portion can reciprocate to capture the upper and lower threads. At least one side, and the fixed knife 52 can cut the upper and lower threads on the lower side of the cloth by engaging with the movable knife 50. 54 is a nest-like thread roll prevention device installed on the cloth table 48, and has a thin plate-like thread grip Plate (thin plate-like member) 5 6. Formed by the piano wire and installed to cut the circle at 50 This lit :: (Please read the precautions on the back before filling this page) Order 丨 ·%. This paper size applies to China National Standard (CNS) A4 Specifications (210X297 mm) • 8- 517120 A7 B7 V. Description of the invention (6) The thread gripper (coil-like member) 58 moved by the thread gripper 56 and fixed on the thread gripper 56 to prevent the thread gripper from falling off The guide plate 60. The thread gripper 56 and the thread gripper 58 constitute an upper-line end holding member. The thread gripper 58 is connected to the thread gripper cylinder 64 via a connector 62, and is driven by the thread gripper cylinder 64. The thread-clamping plate 56 and the thread-clamping cylinder 64 are fixed on the cylinder table 66. The nest-shaped coil prevention device 54 further has a base plate 70 fixed to the cloth table 48. A wire-clamping cylinder 68 is fixed on the base plate 70. The cylinder tube table 66 is moved by the wire clamp cylinder tube 68. By the drive of the thread clamp plate cylinder 68, the thread clamp plate 56 and the thread clamp cylinder 64 fixed to the cylinder table 66 also move together, but the thread clamp plate 56 can be moved by this to pinhole 46. Approach and retreat movement. The thread gripper cylinder 64 is connected to an electromagnetic valve A (not shown) through an air pipe 72. A pressure reducing valve (not shown) is provided in the gas supply path of the protruding side of the thread gripper cylinder 64 to adjust the driving force of the thread gripper 58. When the solenoid valve A is ON, the thread gripper cylinder 64 is attracted, and the leading end portion 58a of the gripper line 58 is isolated from the leading end portion 56a of the gripper plate 56 as shown in FIG. Second, when the solenoid valve A is OFF, the thread gripper cylinder 64 will be in a protruding state. As shown in FIG. 8, the leading end portion 58 a of the gripper line 58 is formed close to the leading end portion 56 a of the gripper plate 56. status. Figures 2 and 3 show the solenoid valve in the ON state. The wire clamp cylinder 68 is connected to an electromagnetic valve B (not shown) through an air pipe 74. When the solenoid valve B is ON, the thread clamp plate cylinder 68 is in a protruding state, and the thread clamp plate 56 is in a state close to the pinhole 46. Secondly, when the solenoid valve B is OFF, the thread-clamping cylinder 68 will be attracted, and the thread-clamping plate 56 is separated from the pinhole 46 by the pinhole 46. This paper applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -9- ............................................., 玎 --------- --------- Line- (Please read the precautions on the back before filling out this page) 517120 A7 B7 V. Description of Invention (7) and it is in a retreat state. Figures 2 and 3 show the solenoid valve b on. In FIG. 4, if the sewing machine rotation command is issued by the pedal of the sewing machine, that is, the sewing start command, the solenoid valve A and the solenoid valve B are turned on. As shown in FIGS. 2 and 3, the pinhole 46 Located between the thread gripper 58 and the thread gripper 56. This position is the standby position where the first needle eye waits for the upper thread 6 to pass through. That is, at this time, as the main shaft starts to rotate, the needle of the first needle eye penetrates the cloth, and the bobbin thread catches the needle thread under the cloth, so that the upper thread 6 hangs under the cloth as shown in FIG. 7 and passes through the thread catcher. Between 56 and thread catch 筘 58. After that, “the sewing machine continues to rotate, and the needle is loaded when the needle is at the dead point. The dead point ## appears.” Once this signal is received, the solenoid valve A will be 0FF, so the device is in the state shown in Figure 5. . At this time, as shown in FIG. 8, the upper thread 6 is held by the thread gripper 58 and the thread gripper 56. Therefore, the position shown in FIG. 8, that is, the upper line 6 is the holding position held by the thread gripper 58 and the thread gripper 56. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs (please read the note on the back? Matters before filling out this page). After that, if the sewing machine continues to rotate, the scales not shown in the figure are facing the upper dead point. Pull up on line 6. At this time, although the upper thread 6 is held by the thread gripper 58 and the thread gripper plate 56, the holding force is weaker than the lifting force of the scale by adjusting the pressure reducing valve, and because the lifting force of the scale is caused by The upper thread tension given by the thread regulator is determined, so just adjust the pressure reducing valve according to the adjustment of the thread regulator. Therefore, when the scale reaches the top dead point, the upper line 6 exposed by the cloth will become shorter as shown in FIG. 9. At this time, if the length of the remaining upper thread 6 under the cloth can be made as short as possible, the nest-like thread winding will not easily occur. However, if a conventional sewing machine without a thread-clamping device as in this embodiment is used, the residual thread length will be extreme. " At ten o'clock, the force of pulling upwards caused the upper thread to fall out of the cloth, causing needle skipping.
Ik後，為使縫眼形成，送布由於布與上線6之彎曲部 之阻力’上線6將被拉向送布方向，而如第1〇圖所示由抓 線板56與抓線筘58間脫落。 其後，於已形成數針之縫眼的階段，電磁_即呈⑽ 之狀態，如第6圖所示，抓線板56及抓線筘58乃向退避位 置移動，即移往與針孔46、可動小刀5〇及固定小刀52相隔 之位置。 隨後，在縫製至最後一針而進行切線動作時，可動小 刀50雖往復移動於針孔46下面，但此時由於抓線板兄及抓 線筘58已經如第6圖所示呈退避狀態，因此乃與可動小刀5〇 不相干擾。 依上述步驟所縫製完成之布，正如第丨丨圖所示，無巢 狀線捲且布裏面的殘線較短，非常之美觀。 以上係依據圖示之實施形態來說明本發明，但本發明 仍做各種不同實施形態之變更。例如各引動器可使用電磁 線圈，如此下線端部之保持力的調整即可藉切換對電磁線 圈之通電以變化開關之控制而為之。 本發明之「縫紉機之巢狀線捲防止裝置」，係設一上 線端部保持構件於布與梭心匣間，並將之構造成可保持第 1針眼時貫穿於布裏面之上線端部者。由於係於布與梭心 匣間保持上線端部，因之可使布至上線端部保持位置之距 離幾乎小至針板之厚度，因而乃可在非常接近落針之位置 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）After Ik, in order to form the seam eye, the cloth is fed by the resistance of the bending portion of the cloth and the upper thread 6 'the upper thread 6 will be pulled in the direction of the feed, and as shown in Fig. 10, the thread clamp 56 and the thread clamp 58 Shedding. After that, at the stage where the stitches of several stitches have been formed, the electromagnetic state is in a state of ⑽. As shown in Figure 6, the thread clamp plate 56 and the thread clamp 筘 58 are moved to the retreat position, that is, to the pinhole. 46. The movable knife 50 and the fixed knife 52 are separated from each other. Subsequently, when sewing to the last stitch for thread trimming, although the movable knife 50 moves back and forth under the needle hole 46, at this time, the thread gripper and the thread gripper 58 are already in a retracted state as shown in FIG. 6, Therefore, it does not interfere with the movable knife 50. The cloth sewn according to the above steps, as shown in figure 丨 丨, has no nest-like thread rolls and the remaining thread in the cloth is short, which is very beautiful. The present invention has been described based on the embodiments shown in the drawings, but the present invention is still modified in various embodiments. For example, each actuator can use an electromagnetic coil. In this way, the adjustment of the holding force at the end of the offline wire can be changed by switching the energization of the electromagnetic coil to change the control of the switch. The "nest-like thread winding prevention device for sewing machine" of the present invention is provided with an upper thread end holding member between the cloth and the bobbin case, and is configured to be able to hold the first needle eye and penetrate the upper thread end portion of the cloth . Because it is tied between the cloth and the bobbin case to keep the upper end of the thread, the distance from the cloth to the upper end of the thread can be almost as small as the thickness of the needle plate, so it can be very close to the position of the needle. This paper is suitable for China National Standard (CNS) A4 specification (210 X 297 mm)
^--------t--------- (請先閱讀背面之注意事項再填寫本頁) -11 - 517120 A7 五、發明說明（9 ) (請先閱讀背面之注咅？事項再填寫本頁) 捕捉上線，而使殘留在布裏面之上線端部長度非常之短。 藉此，乃可有效地防止巢狀線捲之產生且線端不致殘留於 縫製品表面，因此可確保完成品的美觀。進而，由於上線 保持端部係設於布與梭心£間，因此不須依壓布機構的位 置及形狀進行上線捕捉構件位置等之調整。 若上線端部保持構件由薄板狀構件與線狀構件構成， 則可安裝在針板與梭心匣間的微小縫隙間。 若上線端部保持構件可移動於第1針眼等待上線貫穿 之待機位置、保持上線之保持位置及避開與切線裝置相干 擾之退避位置等三個位置間，儘管縫紉機具有一切線裝置 ，仍可在非常靠近針孔的位置保持上線端部。 此外，若設有一可上線端部保持構件所造成之上線端 部保持力的調整裝置時，則可輕易地調整保持上線時之保 持力，如此一來，便可經常確保不跳針、且無巢狀線捲產 生以及成品之美觀。 (圖示之簡單說明） 經濟部智慧財產局員工消費合作社印製 第1圖係一裝有本發明巢狀線捲防止裝置之繡花用縫 紉機的外觀圖。 第2圖係第1圖中針板之下視圖，圖中顯示處於待機位 置之狀態本發明巢狀線捲防止裝置的實施態樣。 第3圖係第2圖中Μ方向之側視圖。 第4圖係一時序圖，顯示本實施態樣之巢狀線捲防止 裝置的時序動作。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -12- 517120 A7 B7 五、發明說明（10) 第5圖係一平面圖，顯示本實施態樣處於抓線線筘缸 筒呈OFF而抓線板缸筒呈ON之保持位置時之狀態。 (請先閱讀背面之注咅？事項再填寫本頁) 第6圖係一平面圖，顯示本實施態樣處於抓線線筘缸 筒與抓線板缸筒都呈OFF之退避位置時之狀態。 第7圖係一部分截面之側面圖，顯示在本實施態樣處 於電磁閥A及電磁閥B呈ON之狀態且上線通過抓線筘與抓 線板之間時，抓線板及抓線箱之位置關係。 第8圖係一部分截面之側面圖，顯示在本實施態樣處 於電磁閥A呈OFF、電磁閥B呈ON的狀態且上線為抓線筘 與抓線板所捕捉之狀態下，上線與抓線板及抓線筘圈之關 係。 第9圖係一部分截面之側面圖，顯示本實施態樣處於 電磁閥A呈OFF、電磁閥B呈ON的狀態且天秤到達上死點 時之上線與抓線板及抓線筘的關係。 第10圖係一部分截面之側面圖，顯示在本實施態樣處 於電磁閥A呈OFF、電磁閥B呈ON的狀態且送布時之上線 與抓線板及抓線筘的關係。 經濟部智慧財產局員工消費合作社印製 第11圖係顯示一以安裝有本實施態樣之巢狀線捲防止 裝置的縫紉機所縫製成之縫眼。 第12圖係顯示習知之附切線機構之縫幼機於開始縫製 前之縫製物截面圖。 第13圖係顯示習知之附切線機構之縫匆機於縫製中之 縫製物截面圖。 第14圖係顯示一習知之使用上線端部保持裝置之初 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） 517120 A7 ' ^^^— B7__ 五、發明說明（U) - 機的縫眼。 第15圖係显g - 第 習知之上線端部保持裝置。 .糸顯不一習知之上線端部保持裝置。 主要元件標號對照表 42 縫針 44 針板 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注音？事項再填寫本頁)^ -------- t --------- (Please read the precautions on the back before filling this page) -11-517120 A7 V. Description of the invention (9) (Please read the back on first (Note? Please fill in this page again.) Snap on the thread so that the length of the end of the thread remaining on the cloth is very short. This can effectively prevent the generation of nested thread rolls and the thread ends will not remain on the surface of the sewing product, so the appearance of the finished product can be ensured. Furthermore, since the upper thread holding end is provided between the cloth and the bobbin, it is not necessary to adjust the position of the upper thread catching member according to the position and shape of the cloth pressing mechanism. If the upper thread end holding member is composed of a thin plate-shaped member and a thread-shaped member, it can be mounted between a small gap between the needle plate and the bobbin case. If the upper thread end holding member can be moved between the three positions including the standby position where the first needle eye is waiting for the upper thread to pass through, the upper thread holding position, and the retreat position to avoid interference with the thread trimming device, the sewing machine can still be used despite all the thread devices. Keep the upper end of the thread very close to the pinhole. In addition, if an adjusting device for the upper end holding force of the upper end caused by the upper end holding member is provided, the holding force when the upper end is held can be easily adjusted. In this way, it is often ensured that the needle does not jump and no The production of nested coils and the finished product are beautiful. (Brief description of the figure) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Figure 1 is an external view of an embroidery sewing machine equipped with the nested thread roll prevention device of the present invention. Fig. 2 is a lower view of the needle plate in Fig. 1, which shows the embodiment of the nested thread winding prevention device of the present invention in a standby position. Figure 3 is a side view in the direction of M in Figure 2. Fig. 4 is a timing chart showing the timing operation of the nest-like winding prevention device according to this embodiment. This paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm) -12- 517120 A7 B7 V. Description of the invention (10) Figure 5 is a plan view showing the implementation of this embodiment in the line-cylinder When the cylinder is OFF and the clamp cylinder is in the ON holding position. (Please read the note on the back? Matters before filling out this page.) Figure 6 is a plan view showing the state of this embodiment when it is in the retraction position where the cylinder and the cylinder of the thread clamp are in the OFF position. FIG. 7 is a side view of a part of the cross section, which shows that when the solenoid valve A and the solenoid valve B are in the ON state and the line passes between the gripper and the gripper, Positional relationship. FIG. 8 is a side view of a part of the cross section, showing that in the state where the solenoid valve A is OFF and the solenoid valve B is ON, and the upper line is captured by the thread clamp 筘 and the thread clamp plate, the upper thread and the thread clamp The relationship between the plate and the thread catching loop. Fig. 9 is a side view of a part of the cross section, showing the relationship between the upper line, the thread catcher and the thread catcher when the scale is at the top dead center when the solenoid valve A is OFF and the solenoid valve B is ON. Fig. 10 is a side view of a part of the cross section, and shows the relationship between the upper thread, the thread gripper and the thread gripper when the solenoid valve A is turned off and the solenoid valve B is turned on and the cloth is fed in this embodiment. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. Figure 11 shows a seam made with a sewing machine equipped with the nested thread roll prevention device of this embodiment. Fig. 12 is a cross-sectional view showing a conventional sewing machine with a trimming mechanism before sewing starts. Fig. 13 is a cross-sectional view showing a conventional sewing machine with a trimming mechanism and a sewing machine during sewing. Figure 14 shows a conventional paper size using the on-line end-holding device at the beginning. The paper size applies to the Chinese National Standard (CNS) A4 (210 X 297 public love) 517120 A7 '^^^ — B7__ V. Description of the invention (U) -Machine eyelet. Figure 15 shows g-the conventional upper-line end retaining device. .Hui Xian is not familiar with the upper wire end retaining device. Comparison table of main component numbers 42 Needle 44 Needle plate The paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) (Please read the note on the back? Matters before filling out this page)
2 針 46 針孔 4 針孔 48 布台 6 8 上線 布 50 50C 可動小刀 旋轉中心 10 下線 52 固定小刀 12 針板 54 巢狀線捲防止裝置 14 16 壓布腳 56 抓線板（薄板狀構件) 車由 56a 先端部 18 臂 58 抓線IS (線圈狀構件) 20 上線捕捉構件 58a 先端部 22 板狀彈簧 60 導板 30 縫紉台 62 連結器 32 縫紉床 64 抓線IS紅胃 34 縫幼機頭部 66 缸筒台 36 壓布腳框 68 抓線板虹_ 38 下板 70 基板 40 裝針桿 72， 74 空氣管 經濟部智慧財產局員工消費合作社印製2 stitches 46 pinholes 4 pinholes 48 cloth table 6 8 upper thread cloth 50 50C movable knife rotation center 10 lower thread 52 fixed knife 12 needle plate 54 nest thread prevention device 14 16 presser foot 56 thread clamp (thin plate-like member) The car consists of 56a tip end 18 arm 58 thread grip IS (coil-shaped member) 20 upper thread catching member 58a tip end 22 leaf spring 60 guide plate 30 sewing table 62 connector 32 sewing bed 64 thread grip IS red stomach 34 sewing head Department 66 Cylinder tube platform 36 Presser foot frame 68 Clamping plate rainbow _ 38 Lower plate 70 Base plate 40 Needle rod 72, 74 Air tube Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs