201037119 六、發明說明： 【韻"明戶斤屬之_挂^舒々貝織^】 發明領域 本發明涉及縫紉機的剪線裝置。 L 才支3 發明背景201037119 VI. Description of the invention: [Rhyme "Minghu's _ 挂 ^舒々贝织^] Field of the Invention The present invention relates to a thread trimming device for a sewing machine. L 才支3 invention background
第6圖為表示現有技術的縫_的剪線裝置㈣結構的 透視圖。該現有技術記載在例如曰本實用新型登錄第 3136842號公報中。現有技術的縫㉟機的剪線裝置^採用下 述結構：聯_5的—端部通過連接塊4義錢壓紅2的活 塞桿3上，通過固定在該聯動軸5另—端部上的凸輪部件6將 面線和底線夾在被稱為“㈣保持m (圖中没有表示)上對魏予所希望的張力，並且解除該㈣ 狀fe釋放面線(針糸）和底_ Ί }的張力，同喊 在針板（圖中没有表示）下面的近似c字形狀的可動刀^ 與上述聯動軸5移動同步地朝箭頭m、B2的方向角位移， 剪斷面線和底線。 、〔耳由5的軸線與上述氣壓缸2的活塞桿 平行。並且，上述氣紅2彻單動《料纽，利用ί 乳優力使活塞桿3«S|A1的方向後退，湘恢 工 的彈力使活S桿3朝箭·2的方向前伸。 la 上述連接塊4上連接著推桿7的一端部，第i擺臂9的— 端部通過㈣8連接在上述推桿7的另_端部 桿U的一端部通過第勒連接在上述請臂9的另2 201037119 4上，上述可動刀片12利用第3銷13角位移自由地連接在上 述刀片驅動桿11的另一端部上。 上述第1擺臂9的中間部分用第4銷14樞支承成在縫紉 機的機體上，當上述活塞桿3朝箭頭A1的方向後退時，上述 第1擺臂9圍繞第4銷14的軸線角位移，通過刀片驅動桿丨^隹 擠可動刀片12朝箭頭B1的方向前進。並且，當上述活塞桿3 朝箭頭A2的方向伸出時，上述第丨擺臂9圍繞上述第4銷14 的軸線朝反方向角位移，通過刀片驅動桿u拉動可動刀片 12朝箭頭B2的方向後退。這樣的上述可動刀片12用第5銷15 枢支承在上述針板的下面。 上述凸輪部件6由與上述聯動軸5大致平行地延伸的長 條形板狀部件構成，在上部形成有第i和第2凸輪面H 上述第1凸輪面6a朝箭頭A2的方向向上傾斜而形成。並且， 上述第2凸輪面6b從第1凸輪面如的上端水準延伸而形成。 3上述氣壓缸2大致水準地設置在固定於上述縫纫機主 體背面上的支架16上，支持節的下端部固定在上述支架 16上。第2擺臂19的中央部位用第6銷_繞上述第6銷18的 5軸線擺動自由地連接在上述支持框η的上端部上。在 19的—端部設置有由上述第】和第2凸輪面知、仙 ^導的從動輪（水口 Μ。並且，沿上下延伸的連接桿23 的下方的—端部用第7銷21連接在上述第2擺臂19的 上上述第6和第7銷18、21由帶銷螺栓實現。 上述連接桿23的配置在上方的另一端部連接在上述縫 、力調'^置上’通過連接桿23朝箭頭C1的方向上升以 201037119 及朝箭頭C2的方向下降，能夠切換上述缝線張力調整農置 對面線和底線的夹持狀態以及解除了該失持狀態的解除狀 態0 這樣的剪線裝置1在縫製過程中將面線和底線彈性地 爽持在上述缝線張力調整裝置中職予適當的張力，當縫製 動作停止時，解除面線和底線的夹持狀態而釋放面線和底 線的上述縫製時的張力，當可動刀片u朝箭頭m的方向前 〇 料使面線和底線鬆弛、防止在不恰當的時機剪斷面線和 底線。 上述現有技術的軸機的剪線裝置丨由於採用用凸輪 部件6上部形成的第1和第2凸輪面如、处承載設置在第2擺 - 臂19一端部上的從動輪2〇 ’通過使凸輪部件6朝箭頭A1、 A2的方向移動來使連接桿23朝箭頭c卜€2的方向上下移動 的結構，㈣即使輯希望的傾斜角度在上述凸輪部件6上 形成第1和第2凸輪面6a、6b以便在可動刀片12朝箭頭扪的 〇 方向前進的途中解除上述縫線張力調整裝置對面線和底線 的夾持狀態，也不能使從動輪20順暢地追隨，存在不能在 可動刀片12朝箭頭B1的方向前進途中最恰當的時機解除縫 線張力調整裝置對面線和底線的夾持狀態這樣的問題。 t發明内容;J 發明摘要 本發明的目的就是要提供一種能夠在可動刀片前進途 中的最恰當時機解除對面線和底線的夾持狀態的縫紉機的 剪線裝置。 201037119 本發明的縫劫機的剪 力調整單t設置在縫妨機主體:=在於包括：縫線張 面線和底線賦予上述面線和張上和能夠切換到夾持 了該夹持狀態的夾持 、力的夹持Hx及解除 在針板的下方朝靠近落針位：二種狀態’·可動刀片， 落針位置的方向後退向則進或者朝離開上述 部角位移自由地連接在上述縫；=線广，1 上述-端部之間的中間部凸：另-端部與 有上述從動輪移動自由地❻輪’凸輪部件，形成 -個方向移動使上述擺臂向 個方：备利用該凸輪部件朝 部件朝另-個移動使上述擺臂另—個利用該凸輪 部’使上述凸輪部件朝上述—個方向 ：移’驅動 動；第1連接部，將上述擺臂 / ϋ方向移 縫線張力凋整早凡，使上述縫線張 边 狀態向上述夹持解除狀態動作：：：疋從上述夾持 早兀攸上述夾持解除狀態向上述失持狀態動： 部’將上述驅動部的驅動力傳遞給上述可動 、 可動刀片前進或後退。 ’使上述 如果採用本發明’由於在第2擺臂的-端部與另 之間的中間部位設置從動輪，在將該從動輪移動自： 入凸輪部件的長孔中的狀態下，能夠利用凸輪部件朝^ 方向移動使擺臂朝-個方向角位移，利用凸輪部件朝另一 個方向移動使擺臂朝另-個方向角位移， 輪部件朝一個方向或另一個方向移動使從動輪追隨上、, 201037119 孔，能夠在可動刀片前進動作的過程中與旋梭外周部 擴張=之前最合適的位置相對應的時機解除縫線張 整皁兀對面線和底線的夾持狀態。 凋 本發明優選在上述凸輪部件的 形成當上述凸輪部件朝上述一個方向移動時引導上2= 輪的第7輪面，以及當上述凸輪部件朝上述另一個方向移 動時引導上述從動輪的第2凸輪面。 Ο Ο 如果採用本發明，由於在上述長孔内形成第Μ輪面和 弟2凸輪面’因此㈣2凸輪面確㈣ 隨移動，能夠在可動刀片前進動作的過程中與旋梭外周; ===最合適的位置相對應的時機解除縫線張 力凋正早7L對面線和底線的夾持狀態。Fig. 6 is a perspective view showing the structure of the prior art slitting device (four). This prior art is described, for example, in Japanese Patent Application Laid-Open No. 3136842. The trimming device of the prior art slit 35 machine adopts the following structure: the end portion of the joint_5 is passed through the connecting rod 4 and the piston rod 3 of the red 2 is fixed by being fixed on the other end of the interlocking shaft 5 The cam member 6 sandwiches the upper thread and the lower thread with a desired tension on Wei Yu called "(4) holding m (not shown), and releases the (four) fe-release surface line (needle) and bottom _ Ί The tension of the }, which is similar to the c-shaped movable knife below the needle plate (not shown), is angularly displaced in the direction of the arrows m and B2 in synchronization with the movement of the interlocking shaft 5, and the section line and the bottom line are cut. [The axis of the ear is parallel to the piston rod of the above-mentioned pneumatic cylinder 2. Moreover, the above-mentioned gas red 2 is completely single-acting, and the direction of the piston rod 3«S|A1 is retracted by the use of ί milk, Xiang Huigong The elastic force causes the live S-bar 3 to extend forward in the direction of the arrow 2. The upper connecting block 4 is connected to one end of the push rod 7, and the end of the i-th swing arm 9 is connected to the push rod 7 by the (four) 8 One end portion of the end rod U is connected to the other 2,037,119,119 of the above-mentioned arm 9 by the first pull, and the movable blade 12 is angularly displaced by the third pin 13 The ground portion is connected to the other end portion of the blade driving lever 11. The intermediate portion of the first swing arm 9 is pivotally supported by the fourth pin 14 on the body of the sewing machine, and when the piston rod 3 is retracted in the direction of the arrow A1, The first swing arm 9 is angularly displaced around the axis of the fourth pin 14, and the movable blade 12 is advanced in the direction of the arrow B1 by the blade driving lever, and when the piston rod 3 is projected in the direction of the arrow A2, The second swing arm 9 is angularly displaced in the opposite direction around the axis of the fourth pin 14, and the movable blade 12 is pulled back by the blade drive lever u in the direction of the arrow B2. The movable blade 12 is pivotally supported by the fifth pin 15 The lower surface of the needle plate. The cam member 6 is formed of an elongated plate-shaped member extending substantially in parallel with the interlocking shaft 5, and the i-th and second cam faces H are formed on the upper portion. The first cam surface 6a is directed to the arrow A2. The second cam surface 6b is formed to extend from the upper end of the first cam surface. The pneumatic cylinder 2 is substantially horizontally disposed on a bracket 16 fixed to the back surface of the sewing machine main body. On, support The lower end portion is fixed to the bracket 16. The central portion of the second swing arm 19 is swingably connected to the upper end portion of the support frame η by the sixth pin_around the fifth axis of the sixth pin 18. At 19 The end portion is provided with a driven wheel (a nozzle) which is known from the above-mentioned first and second cam faces, and the lower end of the connecting rod 23 extending up and down is connected to the second pin 21 at the second pin 21 The upper sixth and seventh pins 18, 21 of the swing arm 19 are realized by a pin bolt. The other end portion of the connecting rod 23 is connected to the slit and the force is adjusted by the connecting rod 23 The direction of the arrow C1 rises in the direction of 201037119 and in the direction of the arrow C2, and the thread trimming device 1 in which the above-described stitch tension adjustment of the agricultural opposite line and the bottom line is clamped and the released state of the lost state is released can be switched. During the sewing process, the upper thread and the lower thread are elastically held in the above-mentioned suture tension adjusting device to apply appropriate tension. When the sewing operation is stopped, the above-mentioned sewing of the upper thread and the lower thread is released to release the upper thread and the lower thread. When the tension is when the movable blade u is facing The direction of the arrow m is used to loosen the upper and lower threads to prevent clipping of the section line and the bottom line at an inappropriate timing. The thread trimmer device of the above-described prior art shaft machine uses the first and second cam faces formed by the upper portion of the cam member 6, for example, to carry the driven wheel 2'' disposed on one end portion of the second pendulum arm 19 The cam member 6 is moved in the direction of the arrows A1, A2 to move the connecting rod 23 up and down in the direction of the arrow c2, and (4) the first and second cam faces are formed on the cam member 6 even if the desired inclination angle is set. 6a and 6b, in the middle of the movement of the movable blade 12 in the direction of the arrow 扪, the nip state of the upper thread and the lower thread of the thread tension adjusting device is released, and the driven wheel 20 cannot be smoothly followed, and the movable blade 12 cannot be moved toward the movable blade 12. The most appropriate timing in the direction of the arrow B1 cancels the problem that the suture tension adjusting device grips the upper thread and the lower thread. SUMMARY OF THE INVENTION It is an object of the present invention to provide a thread trimming device for a sewing machine capable of releasing a state in which the upper thread and the lower thread are held at the most appropriate timing during the advancement of the movable blade. 201037119 The shearing force adjustment t of the sewing machine of the present invention is set in the sewing machine main body: = consists of: the suture upper thread and the lower thread are given to the above-mentioned upper thread and the upper and can be switched to the clamp holding the clamping state Hold and force the clamp Hx and release the needle down position below the needle plate: two states '·movable blade, the direction of the needle drop position retreats forward or is freely connected to the seam away from the above corner ;=Line wide, 1 The intermediate portion between the above-end portions is convex: the other end portion and the driven wheel are freely moved by the 'wheel member', and the direction of the movement is such that the swing arm is directed to one side: The cam member is moved toward the other member, and the swing arm is further driven by the cam portion to move the cam member toward the above-mentioned direction: the first connecting portion shifts the swing arm/ϋ The suture tension is prematurely lowered, and the suture tension state is moved to the above-described grip release state: 疋 疋 疋 疋 疋 疋 疋 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸 兀攸The driving force of the ministry is transmitted to The movable, movable blade advances or retreats. By using the present invention, the driven wheel is provided in the intermediate portion between the end portion of the second swing arm and the other, and the driven wheel can be moved from the long hole of the cam member. The cam member moves in the direction of the ^ to displace the swing arm in one direction, and the cam member moves in the other direction to shift the swing arm toward the other direction, and the wheel member moves in one direction or the other to make the driven wheel follow. , 201037119 Hole, the clamping state of the upper line and the lower thread of the suture saponin can be released at the timing corresponding to the most suitable position before the rotation of the outer peripheral portion of the hook during the forward movement of the movable blade. Preferably, in the above-described formation of the cam member, when the cam member moves in the one direction, the seventh wheel surface of the upper 2= wheel is guided, and when the cam member moves in the other direction, the second wheel guides the driven wheel. Cam surface. Ο Ο According to the present invention, since the second tread and the second cam surface are formed in the long hole, the (four) 2 cam surface is (4) movable, and can be moved to the outer circumference of the hook during the forward movement of the movable blade; === The most suitable position corresponds to the timing to release the thread tension and the clamping state of the upper line and the lower thread 7L earlier.
本發明的縫勿機的剪線裝置的特徵在於包括：縫線張 力:整單元，設置在縫域主體的上部，能夠切換到夹持 面線和底輯予上述面線和底線張力的夾持狀態以及解除 了5玄爽持狀4的夾持解除狀態中的m τ㈣I ==朝靠近落針位置的方向前進或者朝離開上述 洛針位置的方向後退，剪斷上述面線和底線；從動輪；從 動輪引導錯，固定在上述縫喊主體上，設置有允許上 述從動輪朝第1方向和與第丨方向相反的第2方向移動、並且 :止上述從動輪朝與上述第1和第2方向交叉的方向移動的 :動輪引導。(5 ’凸輪部件，形成有上述從動輪移動自由地 的長孔牙|J用该凸輪部件朝上述交叉方向的一個方向 移動使上述從動輪朝上述第1方向移動，並且利用該凸輪部 7 201037119 件朝上述蚊方㈣[”向移缺 第2方向移動；驅動 Ή動輪朝上述 上述另-個方向移動二=輪部件朝上述-個方向或 遞給上述縫線張力調敕將上述從動輪的位移傳 上述夾持狀態向上述使上述縫線張力調整單元從 上4夾持解除狀態動作， =娜單元從上述夹持解除狀態向上_2=、線 使!！ΓΖ’將上部的鶴力傳驗上述可動刀片’， 使上述可動刀片前進或後退。 月 幻木用本發明’由於能夠用從動輪 =方向和第2方向移動、並且阻止從動輪朝與第:： 邱杜°乂又的方向移動’在將從動輪移動自由地欲入凸輪 σ的長孔内的狀態下，能夠利用凸輪部件朝一個方向移 動使上述從動輪朝上述第1方向移動，利用凸輪部件朝另_ 们方向移動使上述從動輪朝上述第2方向移動，因此能夠根 據凸輪件朝—個方向或另一個方向移動使從動輪追隨上 述長孔’能夠在可動刀片前進動作的過程中與面線旋梭外 周部即將擴張面線之前最合適的位置相對應的時機解除縫 線張力5周整單元對面線和底線的夾持狀態。 圖式簡單說明 本發明的目的、特色以及優勢從下述詳細的說明和附 圖應該更加明確。 第1圖為表示本發明—個實施形態的縫紉機的剪線裝 置的結構的系統圖； 第2圖為縫紉機的剪線裝置的分解透視圖； 201037119 第3圖為設置了剪線裝置的縫紉機的透視圖； 第4A圖〜第4E圖為用來說明缝紉機的剪線裝置的動 作的說明圖，第4A圖表示可動刀片即將進入右面線的線環 中之鈾的狀態；第4B圖表示右面線被面線旋梭的外周部推 擴開的狀態；第4C圖表示右面線不能完全抵抗面線旋梭外 周部向寬度方向兩側的推擴力而被剪斷的狀態，第4D圖表 不右面線、中央面線和左面線不能完全抵抗面線旋梭的向 ◎ 外推擴力而被剪斷’底線越過面線旋梭的外周部嵌入剪線 器刀部的狀態，第4E圖表示可動刀片正常地進入面線和底 線的各線環中的狀態； • 第5圖為表示本發明其他實施形態的縫紉機的剪線裝 - 置的結構的分解透視圖； 第6圖為表示現有技術的縫紉機的剪線裝置的結構的 透視圖。 【實施方式;3 Q 較佳實施例之詳細說明 下圖面參考附圖詳細說明本發明的優選實施形態。 第1圖為表示本發明一個實施形態的縫紉機的剪線裝 置30的結構的系统圖’第2圖為縫紉機的剪線裝置3〇的分解 透視圖’第3圖為設置了剪線裝置3〇的多針雙重環縫紉機 (多針環縫、、彡シ>)31的透視圖。 本實施形態的縫紉機的剪線裝置30包括縫線張力調整 單元33、可動刀片35、擺臂38、凸輪部件40、驅動部41、 苐1連接部42和第2連接部43。 9 201037119 多針雙重環縫初機31採用上述縫線張力調整 置在勒機主体32的上部，能够切換到下述狀態中: 個狀態的結構：夾着多根(本實施形態為3根)面⑽、μ Ζ稱時寫為“⑽Α”）、上飾線(上⑹_。底線 ==、上飾線Β和底線《力的夹持狀態，以及解除 了 °亥夾持狀態的夹持解除狀態。 ’ 動刀片35在針板朝靠近料下的位置 的前碩m!的方向（以下有時寫為“前進方向 且朝離開上述落針位置p的箭頭B12的方向（以下= “後退方向B12，，)後退，從而剪斷上述面線A和底線c 上述第1銷3·移自㈣連接在 H刃機主體32上，在另—端部與上述 間部位設置有從動輪37。 θ的中 在上述凸輪部件40上形成上述從動輪37 入的長孔39，通過上述凸輪部件40朝箭頭A11 甘入 移，使上述擺臂38向上角位移；通過上述凸輪部°的位 翻2的方向的位移，使上述擺臂犯向下角位移。朝箭 上述第！連接部42將上述擺臂38另—端部的 :上述縫線張力調整單元33,使上述縫線張力調整單^ 4上述夾持狀態向上述夹祕除狀態動作 、 :力調整單元33從上述夹持解除狀態向上述夹持= 上述第2連接部43將上述驅動部41的驅 述可動刀片35’從而使上述可動刀片35朝 動力傳遞給上 進方向B11以及 201037119 後退方向B12角位移。 第1圍_ “ 包括基板50和在基板50的與 糊的圖面垂直的縱長方向 I、 施形態為5個）夾持抑㈣間隔设置的多個（本實 板50上W 夾持㈣包括：固定在上述基 伴持片5二T片％ ;安襄在保持片52上，設置了穿過 1 持片如向裏側突出的夾持解_53的操作㈣；夹設 ^片54與保持代之間，用與上述操作⑽的操作量The thread trimming device of the sewing machine of the present invention is characterized in that it comprises: a suture tension: a whole unit, which is disposed at an upper portion of the main body of the seam region, and is switchable to a gripping surface line and a bottom piece to which the tension of the upper thread and the bottom thread is held. m τ (4) I == in the direction of the grip release state in which the 5 squatting state 4 is released. I == advances toward the needle drop position or retreats in the direction away from the needle position, and cuts the upper thread and the lower thread; the driven wheel The driven wheel is guided incorrectly and fixed to the sewing body, and is provided to allow the driven wheel to move in the first direction and the second direction opposite to the second direction, and to stop the driven wheel toward the first and second Moving in the direction of the direction crossing: the moving wheel guides. (5' cam member, the long hole tooth|J that is formed by the movement of the driven wheel is moved in one direction in the intersecting direction, and the driven wheel is moved in the first direction, and the cam portion 7 201037119 is used Moving toward the mosquito side (4) [" to move in the second direction; driving the tilting wheel to move in the above-mentioned other direction, the second wheel member is moved toward the above-mentioned direction or the above-mentioned suture tension is adjusted to the above-mentioned driven wheel. The displacement transmits the gripping state to the above-described suture tension adjusting unit from the upper 4 grip release state, and the = na unit is lifted from the grip release state _2=, the line makes !!ΓΖ' The above-mentioned movable blade is inspected to advance or retreat the movable blade. The present invention uses the present invention to move in the direction of the driven wheel = direction and the second direction, and prevents the driven wheel from moving toward the direction of: :: Qiu Du In a state where the driven wheel is moved into the long hole of the cam σ freely, the cam member can be moved in one direction to move the driven wheel in the first direction, and the cam member can be moved. Moving in the other direction causes the driven wheel to move in the second direction. Therefore, the driven wheel can move in the same direction or in the other direction, so that the driven wheel can follow the long hole' during the forward movement of the movable blade. The timing of the most suitable position before the expansion of the upper thread of the bobbin hook is released at the timing corresponding to the suture tension. The clamping state of the upper line and the lower thread of the whole unit is 5 weeks. The figure briefly illustrates the purpose, features and advantages of the present invention from the following BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a system diagram showing a configuration of a thread trimmer for a sewing machine according to an embodiment of the present invention; and Fig. 2 is an exploded perspective view of a thread trimming device for a sewing machine; 201037119 The figure is a perspective view of the sewing machine provided with the thread trimming device; FIGS. 4A to 4E are explanatory views for explaining the operation of the thread trimming device of the sewing machine, and FIG. 4A shows the movable blade which is about to enter the wire loop of the right thread. The state of uranium; Figure 4B shows the state in which the right side line is pushed open by the outer peripheral portion of the upper thread hook; Figure 4C shows that the right line cannot completely resist the outer circumference of the upper thread hook In the state where the pushing force is sheared on both sides in the width direction, the 4D chart is not the right line, the center line, and the left line cannot be completely resisted by the outward rotation of the upper hook. The outer peripheral portion of the upper hook is inserted into the state of the thread cutter blade, and the fourth drawing shows the state in which the movable blade normally enters the respective loops of the upper thread and the lower thread; and Fig. 5 is a view showing the sewing machine according to another embodiment of the present invention. Fig. 6 is a perspective view showing the structure of a thread cutting device of a sewing machine of the prior art. [Embodiment; 3 Q Detailed Description of Preferred Embodiments The following drawings are detailed with reference to the accompanying drawings. 1 is a system diagram showing a configuration of a thread trimming device 30 of a sewing machine according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of a thread trimming device 3 of the sewing machine. A perspective view of a multi-needle double loop sewing machine (multi-needle loop, 彡シ>) 31 in which the thread trimming device 3 is set. The thread trimming device 30 of the sewing machine according to the present embodiment includes a thread tension adjusting unit 33, a movable blade 35, a swing arm 38, a cam member 40, a driving portion 41, a first connecting portion 42, and a second connecting portion 43. 9 201037119 The multi-needle double-annular stitching machine 31 is placed on the upper part of the main body 32 by the above-described suture tension adjustment, and can be switched to the following state: The structure of each state: a plurality of pieces (three in the present embodiment) Face (10), μ nickname is written as "(10) Α"), upper trim line (upper (6) _. bottom line ==, upper trim line and bottom line" force clamping state, and release of the clamping state of the lifting state The state of the moving blade 35 in the direction of the front of the needle plate toward the lower position of the needle plate (hereinafter sometimes referred to as "the forward direction and the direction of the arrow B12 away from the above-mentioned needle drop position p (hereinafter = "reverse direction" B12,,) retreats to cut the upper thread A and the bottom line c. The first pin 3 is moved from (4) to the H-blade main body 32, and the driven wheel 37 is provided at the other end portion and the intermediate portion. The long hole 39 in which the driven wheel 37 is formed is formed on the cam member 40, and is moved by the cam member 40 toward the arrow A11 to displace the swing arm 38 upward; and the cam portion is rotated by 2 The displacement of the direction causes the above-mentioned swing arm to make a downward angular displacement. The portion 42 of the other end portion of the swing arm 38: the suture tension adjusting unit 33 causes the suture tension adjusting unit 4 to move in the clamping state, and the force adjusting unit 33 from the clip In the release state, the movable blade 35' is driven by the drive unit 41 to the above-described second connection unit 43. The movable blade 35 is angularly displaced in the forward direction B11 and the 201037119 in the backward direction B12. The circumference _ "including the substrate 50 and the lengthwise direction I of the substrate 50 perpendicular to the plane of the paste, five in the form of a configuration" is sandwiched by a plurality of (four) intervals (the W clamp (4) on the solid board 50 includes: It is fixed on the base companion piece 5 and the second T piece %; the ampoule is placed on the holding piece 52, and the operation of the clamping solution _53 which protrudes through the 1 holding piece such as the inward side is set (4); the clamping piece 54 and the holding generation are provided. Between the operation amount with the above operation (10)
相對應的夾持力夾持面線A'上飾線帥底線C，從而賦予 面線A、上飾線B和底線c所希望的張力的—對夾持片仏、 55b ’安裝在保持片52上，分別形成了 —對供各面線a、上 飾線B和底線C穿插的通孔細、娜的縫線引導片57。 在上述基板50的同-個面上，一體地設置了形成有各 一對供各面線A、上飾線B和底線〇分別穿過的縫線穿插孔 恤、58b的線道引導部59。各面線A、上飾線B和底線c捲 繞到圖巾沒有表示的捲繞捲筒或奸上，這些面線A、上飾 線B和底線C穿過上述線道引導部59的各縫線穿插孔5以、 58b，從表面一側穿過各縫線引導片57的一個縫線穿插孔 58a到爰面一側後，從長面一侧穿過另一個縫線穿插孔 到表面一側。 穿過上述線道引導部59的各縫線穿插孔58a、58b的各 面線A、上飾線B和底線c從裏面一侧穿過各縫線引導片57 的一個通孔56a到表面一側’經過各夾持片55a、55b之間從 表面一側穿過另一個通孔56b到裏面一侧，分別穿過設置在 縫紉機主體3 2上部的多個（本實施形態中為5個）線道引導部 11 201037119 件6卜62、63、64、65上形成的通孔，各面㈣穿進各邮 的穿線孔中’並且上飾線时進輯金屬件(糸道金具)㈣ 通孔67中。 並且，上述底線C穿過線道引導部59的缝線穿插孔 58a、58b，從裏面一侧穿過缝線引導片57的一個通孔細到 表面-側’經過夾持片55a、55b之間，從表面一側穿過另 -個通孔娜職面—側’從底線鬆弛部69經過底線引導片 70、71、72、73、74導入彎針75。 上述凸輪部件40在面臨上述長孔39的内周部朝另一 個方向A12形成從水準方向向下彎曲的互相平行的第【凸輪 祕和第2凸輪面82，所述第丨凸輪面81在上述&輪部件4〇 朝上述-個方向A11移⑽引導上述從動輪37，所述幻凸 輪面82在上述凸輪部件4〇朝上述另一個方向趙移動時引 導上述從動輪37。 上述驅動部41具有：電磁螺線管83 ;固定在該電磁螺 線管83的插棒式鐵芯84上的連接件85 ; 一端部固定在連接 件85上的連接軸I固定在連接軸86另一端部上的連接塊 87 ; -端部固定在連接塊87上的聯動軸88 ;供聯動轴_ 插’使聯動軸88沿軸線方向朝箭頭Au、八12的方向移動自 由地保持聯動轴88另-端部的引導部件89;保持上述電磁 螺線官83和聯動軸88,固定在縫紉機主體32背面的支架79。 上述聯動軸88上安裝有用來賦予使該聯動軸“從被電 磁螺線管83驅動朝箭頭A11的方向位移了的狀態向朝箭頭 A12的方向回歸的彈力的回歸輔助彈簧。 12 201037119 述引導邛件89具有供上述聯動軸88穿插的引導筒部 分輝從引導筒部分9〇突出的板狀凸緣部9卜上述擺臂38 端W上述第1銷36角位移自由地連接在凸緣部91上。 上述第1連接部42具有配置在下方的-端部用第2銷92 移自由地連接在上述擺臂38的另-端部上的第1連接 部件94 ’ —端部用第3銷95角位移自由地連接在第i連接部 件94的配置在上方的另—端部上的第2連接部件96。The corresponding clamping force grips the upper thread A' to sew the thread bottom line C, thereby imparting the desired tension to the upper thread A, the upper trimming line B and the lower thread c - the holding sheets 55, 55b' are mounted on the holding piece At 52, a suture guide piece 57 for the through hole fine and the Na, which is inserted through each of the upper thread a, the upper decorative thread B, and the lower thread C, is formed. On the same surface of the substrate 50, a pair of stitch guides for forming a pair of suture insertion jacks and 58b through which the upper thread A, the upper trim B, and the bottom thread respectively pass are integrally provided. 59. Each of the upper thread A, the upper decorative thread B, and the lower thread c are wound around a winding reel or a smear not shown in the drawing, and the upper thread A, the upper decorative thread B, and the lower thread C pass through the respective guide portions 59 The suture insertion holes 5, 58b are inserted through the suture insertion hole 58a of the respective suture guiding pieces 57 from the surface side to the side of the crotch surface, and then inserted through the other suture from the long side Hole to the side of the surface. Each of the upper thread A, the upper decorative line B, and the lower thread c passing through the respective suture insertion holes 58a, 58b of the above-described lane guiding portion 59 passes through a through hole 56a of each of the suture guiding pieces 57 from the inner side to the surface. One side passes through the other through-holes 56b to the inner side from the surface side through the respective holding pieces 55a, 55b, and passes through a plurality of the upper portions of the sewing machine main body 3 2 (in this embodiment, five) ) The guide hole 11 is formed in the through hole formed on the 62, 63, 64, and 65, and the surface (4) is inserted into the threading hole of each post' and the metal piece (the gong) is added to the upper line (4) In the through hole 67. Further, the above-mentioned bobbin thread C passes through the suture insertion holes 58a, 58b of the lane guide 59, and passes through a through hole of the suture guiding piece 57 from the inner side to the surface-side 'passing the holding pieces 55a, 55b Between the two, the through-hole guides 70, 71, 72, 73, 74 are introduced from the surface side through the other through-holes. The cam member 40 forms, in the inner peripheral portion facing the long hole 39, in the other direction A12, a mutually parallel second cam portion 82 which is bent downward from the horizontal direction, and the second cam surface 81 is in the above The wheel member 4 turns (10) toward the above-described direction A11 to guide the driven wheel 37, and the phantom cam surface 82 guides the driven wheel 37 when the cam member 4 is moved toward the other direction. The driving portion 41 has an electromagnetic solenoid 83, a connecting member 85 fixed to the plunger 84 of the electromagnetic solenoid 83, and a connecting shaft I whose one end is fixed to the connecting member 85 is fixed to the connecting shaft 86. The connecting block 87 on the other end; the interlocking shaft 88 whose end is fixed to the connecting block 87; and the interlocking shaft _ inserting the moving shaft 88 in the direction of the arrow Au and the octa 12 in the axial direction to freely maintain the interlocking shaft A guide member 89 at the other end portion; a holder 79 that holds the electromagnetic solenoid 83 and the interlocking shaft 88 and is fixed to the back surface of the sewing machine main body 32. A return assist spring for imparting an elastic force for returning the interlocking shaft "from the state of being displaced by the electromagnetic solenoid 83 toward the arrow A11 toward the direction of the arrow A12 is attached to the interlocking shaft 88. 12 201037119 The member 89 has a plate-like flange portion 9 through which the guide cylinder portion penetrating the interlocking shaft 88 protrudes from the guide cylinder portion 9b. The swing arm 38 end W is angularly displaced to the flange portion 91 by the first pin 36. The first connecting portion 42 has a first connecting member 94' that is disposed at a lower end portion of the swing arm 38 and is disposed at a lower end portion of the lower end portion of the swing arm 38. The angular displacement of 95 is freely connected to the second connecting member 96 disposed on the other end portion of the i-th connecting member 94.
上述第2連接部件96的另一端部固定在大致水準配置 的轉動軸97上，用來減上賴線張力纏單元33的各失 持器51的夾持解除銷53的推壓片99固定在轉動轴π上。該 推壓片99通·壓上述鱗解_53解除各线器51料 2夾持片％、说的夾持力，釋放各面線A、上飾線 底線C的張力。 上述第2連接部43包括：第3連接部件ι〇ι ;約連接部 件此第5連接部件⑻；將第3連接部物的—端部角: 移自由地連接在上述連接塊87上的第4細4;角位移 地連接第3連接部細的另—端部和⑽接部件1〇2的— j部的第5鎖105 ;角位移自由地連接第4連接部件102的另 一端部和第5連接部件1G3的—端部的第6卿6;角位移自 =1?接部件1〇2的兩端部之間的部分連接在縫 體32上的第7銷1〇7;角位移自由地連接第5連接部件 103的另-端部和可動刀片35的中間部分的第8銷1〇8。 上述可動刀片35的-端部用第9銷1〇9角位移自由地連 接在上述針板34的裏面。上述第！〜第9銷36、％、％、_ 13 201037119 〜109也可以由例如帶銷螺栓實現。並且，上述可動刀片35 的另一端部在作為角位移中心的第9銷109—側設置有面線 旋梭(針糸7 7々）35a和底線旋梭（小一八糸"7 7，）35b。 第4A圖〜第4E圖為用來說明缝紉機的剪線裝置3〇的動 作的圖’第4A圖表示可動刀片35即將進入右面線A的線環 中之前的狀態；第4B圖表示右面線A1被面線旋梭35a的外 周部推擴開的狀態；第4C圖表示右面線A1不能完全抵抗面 線旋梭35a外周部‘向寬度方向兩側的推擴力而被剪斷的狀 態’第4D圖表示右面線A1、中央面線A2和左面線A3不能 完全抵抗面線旋梭35a的向外推擴力而被剪斷，底線C越過 面線旋梭35a的外周部嵌入剪線器刃部的狀態，第4E圖表示 可動刀片35正常地進入面線八丨〜A3和底線c的各線環中的 狀態。另外，這裏就用可動刀片35剪斷的面線A1〜A3和底 線C進行說明，不作為可動刀片35剪斷對象的上飾線B的說 明省略。 真 I 你a又罝於縫紉機主體 32上部的缝線張力調整單元财著面線A1〜A3、上飾線0 和底線C而賦予上述這些面線A1〜A3、上輕B和底線❻ 力的夾持狀態下，如第4A圖所示在各針s(參照第3圖如 在大致上死,_狀態下，可動刀片35在針板Μ的下 近落針位置p的箭頭B11的方向前進，如第4β圖所示= A1被面線旋梭35a的外周部推擴開。 ,、''' 此時如果$線裝置3G解除 線A1〜A3和底線C的爽_能—張力以早元33對面 爽持狀的時機和可動 14 201037119 彳4«作的賴沒相整到最恰#㈣機，轉夾持狀態 -的話’則在縫製時的張力被賦予面線A1〜A3上的狀態下可 動刀片35朝箭頭B11的方向前進，推擴開面線線環 。此時， 如果不在適當的時機解除縫線張力難單元33對面線 A3和底線C夹持的狀態的話，則如第扣圖所示右面線^不 能完全抵抗面線旋梭35a外周部的推擴力而被剪斷了。並 且，中央面線A2和左面線幻被面線旋梭祝的外周部推擴 0 開，底線^皮推到面線旋梭35a的外周部上。 而且，當可動刀片35繼續朝箭頭B11的方向前進時，如 第4D圖所不’中央面線A2和左面線八3不能夠$全抵抗面線 旋梭35a外周部的推擴力而被剪斷，底線c越過面線旋梭祝 的外周部而嵌入剪線器刃部。 如果在這樣縫線張力調整單元33夾著各縫線的狀態下 剪斷面線A1〜A3的話，則面線八卜…的張力急劇釋放， 在其反作用下麵線被拉回到縫線張力調整單元一側。結果 〇 從針的穿線孔到剪斷的面線的剪斷端部的長度變短，當為 了進行下一次縫製而再次賦予張力並開始針的上下運動 時，面線被從針的穿線孔拔出，產生不能順暢地進行缝製 這樣的問題。並且，當底線c像上述那樣被面線旋梭35&的 剪線器刃部另斷時，底線c的堵在彎針的穿線孔中的剪斷端 部不能被退避的可動刀片Μ和壓線彈簧（圖中沒有表示）保 持，當開始下一次縫製動作時，底線(^皮從彎針75拔出來。 為了防止產生這樣的問題，在凸輪部件4〇上形成長孔 39，在面臨該長孔39的内周面上形成第丨和第2凸輪面“、 15 2〇l〇37li9 82，強制地使從動輪37在長孔39内被第1和第2凸輪面81、 82引導從動’能夠準確地將剪線裝置3〇帶來的缝線張力調 整單元33的夾持解除的時機調整到可動刀片35朝箭頭B11 的方向前進途中的適當時機，能夠像第4E圖所示那樣，可 動刀片35在最適當的時機解除各面線A1〜A3和底線C的夾 持狀態’使各面線A1〜A3和底線C鬆弛後，剪斷面線A1〜 A3和底線C。 因此，能夠使各面線A1〜A3為離開各針S的穿線孔適 當的長度，底線C能夠用可動刀片和壓線彈簧（圖中沒有表 示）保持，防止下一次縫製動作開始時縫線拔出，不會產生 上述那樣的問題。 在本實施形態這樣的剪線裝置3〇中，在擺臂38的一端 泮與另一端部的中間部分設置有從動輪37，在將該從動輪 37移動自由地嵌入凸輪部件4〇的長孔邛中的狀態下由於 通過使凸輪部件4G朝—個方向Au位移能夠使擺臂38向一 個方向角位移’通過使凸輪部件4〇朝另一個方向Ai2位移能 夠使擺臂38向另外—個方向角位移，因此利用上述凸輪部 件40朝-個方向Au和另—個方向Ai2的位移能夠使擺臂 第連接牛94和第2連接部件96聯動，能夠以高的回 應特性使縫線張力調整單元33從失鮮㈣解除狀態 中的4何個向另一個動作，能夠在可動刀片％前進途中 的最^田時機㊅精度地解除面線Α和底線C的夾持狀態。 第5圖為表示本發明其他實施形態的縫幼機的剪線裝 置30a的結構的分解透視圖。另外，與上述實施形態相對應 16 201037119 的部分添加拍同的附圖標記，並省略說明避免重複。本實 施形態的縫切機的剪線裝置他包括縫線張力調整單元 33可動刀片35、從動輪37、從動輪引導部件⑵、巴輪部 件40、驅動部41、第丨連接部42和第2連接部43。 上述從動輪引導部件121被固定在支架79上，設置有允 許從動輪37朝第i方向η和與第i方向η相反的第2方向⑵立 移、並且阻止上述從動輪37朝與上述第i和第2方向门、以 〇 $叉的方㈣、Κ2位移的從動輪引導部12〇。其中，上述 帛1方向η與使上述縫絲力調整單元33從夾持狀態向夹 持解除，態動作的方向相對應，第2方㈣與使上述縫線張 . 力5周整早凡3 3從夾持解除狀態向夾持狀態動作的方向相對 應。 上述凸輪部件40形成將上述從動輪37移動自由地嵌入 的長孔39，通過朝箭頭幻的方向位移，使上述從動輪⑺月 上述第1方向η位移，並且通過朝箭頭κ2的方向位移，使從 ◎ 動輪37朝第2方向12位移。並且，上述凸輪部件4〇—體地形The other end portion of the second connecting member 96 is fixed to the rotating shaft 97 disposed substantially at the level, and the pressing piece 99 for reducing the pinching release pin 53 of each of the disengagement members 51 of the line tension wrap unit 33 is fixed. Rotate the axis π. The pressing piece 99 is pressed and pressed to release the above-mentioned scale solution _53, and the tension of the respective sheets 51 and 2 is clamped, and the tension of each of the upper thread A and the upper thread C is released. The second connecting portion 43 includes: a third connecting member ι〇ι; a connecting member; the fifth connecting member (8); and an end portion of the third connecting portion: a portion that is detachably connected to the connecting block 87 4 thin 4; angularly displaced to connect the other end of the third connecting portion and (5) the fifth lock 105 of the -j portion of the connecting member 1〇2; the angular displacement is freely connected to the other end of the fourth connecting member 102 and The sixth pin 6 of the end portion of the fifth connecting member 1G3; the angular displacement from =1, the portion between the both end portions of the connecting member 1〇2 is connected to the seventh pin 1〇7 on the slit body 32; angular displacement The other end portion of the fifth connecting member 103 and the eighth pin 1〇8 of the intermediate portion of the movable blade 35 are freely connected. The end portion of the movable blade 35 is freely coupled to the inside of the needle plate 34 by angular displacement of the ninth pin 1 〇 9 . Above! The ninth pin 36, %, %, _ 13 201037119 ～ 109 can also be realized by, for example, a pin bolt. Further, the other end portion of the movable blade 35 is provided with a needle thread hook (needle 7 7 々) 35a and a bottom thread hook on the side of the ninth pin 109 as the center of angular displacement (small one 糸 糸 " 7 7, ) 35b. 4A to 4E are views for explaining the operation of the thread trimmer 3 缝纫 of the sewing machine. FIG. 4A shows a state immediately before the movable blade 35 enters the wire loop of the right line A; FIG. 4B shows the right line A1. The state in which the outer peripheral portion of the upper thread bobbin 35a is expanded and expanded; and the fourth line C1 shows that the right side line A1 cannot completely resist the state in which the outer peripheral portion of the upper thread hook 35a is pushed to the both sides in the width direction. 4D shows that the right line A1, the center line A2, and the left line A3 cannot be completely sheared against the outward pushing force of the upper thread hook 35a, and the bottom line C is inserted into the cutter edge over the outer circumference of the upper thread hook 35a. In the state of the portion, FIG. 4E shows a state in which the movable blade 35 normally enters each of the wire loops of the upper thread gossip ~ A3 and the lower thread c. Here, the upper threads A1 to A3 and the lower thread C which are cut by the movable blade 35 will be described here, and the description of the upper decorative thread B which is not to be cut by the movable blade 35 will be omitted. True I, the suture tension adjusting unit on the upper part of the main body 32 of the sewing machine, the upper thread A1 to A3, the upper thread 0 and the lower thread C, are given to the upper threads A1 to A3, the upper light B and the lower thread. In the clamped state, as shown in Fig. 4A, in each of the needles s (refer to Fig. 3, as in the substantially dead state, the movable blade 35 advances in the direction of the arrow B11 of the lower needle drop position p of the needle plate p. As shown in the 4th figure, A1 is enlarged by the outer peripheral portion of the upper thread hook 35a. ,, ''' At this time, if the line device 3G releases the line A1 to A3 and the bottom line C, the tension is early. The timing of the opposite side of the element 33 and the movable 14 201037119 彳 4 « 的 相 到 最 最 最 ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( In the state, the movable blade 35 advances in the direction of the arrow B11, and the upper thread loop is opened and expanded. At this time, if the sewing thread tension unit 33 is not clamped to the upper thread A3 and the bottom thread C at an appropriate timing, The right line ^ shown in the buckle diagram cannot be completely cut against the pushing force of the outer peripheral portion of the upper thread hook 35a, and the center line A2 and the left line are cut. The outer peripheral portion of the imaginary hem hook is pushed open by 0, and the bottom thread is pushed onto the outer peripheral portion of the upper thread hook 35a. Further, when the movable blade 35 continues to advance in the direction of the arrow B11, as shown in Fig. 4D The center line A2 and the left line 八3 cannot be cut by the pushing force of the outer peripheral portion of the upper hook hook 35a, and the bottom line c is inserted over the outer peripheral portion of the upper thread bobbin and is embedded in the cutter cutter blade. If the cross-sectional lines A1 to A3 are cut in such a state that the suture tension adjusting unit 33 sandwiches the respective sutures, the tension of the upper thread is rapidly released, and the thread is pulled back to the suture tension under the reaction. The unit side is adjusted. As a result, the length from the threading hole of the needle to the shearing end of the cut needle line becomes shorter, and when the tension is again applied for the next sewing and the needle is moved up and down, the needle line is When the threading hole of the needle is pulled out, there is a problem that the sewing cannot be smoothly performed. Further, when the thread line c is broken by the thread cutter blade of the upper thread hook 35 & as described above, the bottom thread c is blocked by the looper. The movable blade and the pressing line of the shearing end in the threading hole cannot be retracted The spring (not shown) is held, and when the next sewing operation is started, the bottom thread is pulled out from the looper 75. In order to prevent such a problem, a long hole 39 is formed in the cam member 4〇, in the face of the The inner circumferential surface of the long hole 39 is formed with a second and second cam surface ", 15 2 〇 l 〇 37li9 82, forcibly guiding the driven wheel 37 to the first and second cam faces 81, 82 in the long hole 39. The timing of releasing the grip of the thread tension adjusting unit 33 by the thread trimming device 3〇 can be accurately adjusted to an appropriate timing when the movable blade 35 advances in the direction of the arrow B11, and can be as shown in FIG. 4E. When the movable blade 35 releases the nip state of each of the upper threads A1 to A3 and the lower thread C at the most appropriate timing, the respective upper threads A1 to A3 and the lower thread C are relaxed, and the cross-sectional lines A1 to A3 and the lower thread C are cut. Therefore, each of the upper threads A1 to A3 can be an appropriate length from the threading hole of each needle S, and the bottom thread C can be held by the movable blade and the crimping spring (not shown) to prevent the suture from being pulled out at the start of the next sewing operation. Out, there will be no such problems. In the thread trimming device 3A according to the present embodiment, the driven wheel 37 is provided at an intermediate portion between the one end end and the other end portion of the swing arm 38, and the driven wheel 37 is movably inserted into the long hole of the cam member 4〇. In the state of the cymbal, the swing arm 38 can be angularly displaced in one direction by displacing the cam member 4G in one direction Au. By swinging the cam member 4 另一个 in the other direction Ai2, the swing arm 38 can be moved in another direction. The angular displacement is such that the displacement of the cam member 40 in the one direction Au and the other direction Ai2 enables the swing arm connecting cow 94 and the second connecting member 96 to interlock, and the stitch tension adjusting unit can be made with high response characteristics. From the four of the depletion (4) release states to the other, it is possible to accurately cancel the nip state of the upper thread Α and the lower thread C at the most time of the movable blade %. Fig. 5 is an exploded perspective view showing the structure of a thread trimming device 30a of a slitting machine according to another embodiment of the present invention. In addition, the same reference numerals are attached to the portions corresponding to the above-described embodiments, and the description is omitted to avoid redundancy. The thread trimmer of the seam cutting machine of the present embodiment includes a suture tension adjusting unit 33, a movable blade 35, a driven wheel 37, a driven wheel guide member (2), a wheel member 40, a driving portion 41, a second connecting portion 42, and a second Connection portion 43. The driven wheel guide member 121 is fixed to the bracket 79, and is provided with a second direction (2) that allows the driven wheel 37 to move in the i-th direction η opposite to the i-th direction η, and prevents the driven wheel 37 from facing the ith The driven wheel guide portion 12 that is displaced from the second direction door, the square (four), and the Κ2. The 帛1 direction η corresponds to a direction in which the sewing force adjustment unit 33 is released from the nip state to the nip, and the second side (four) and the stitching force are five weeks long. 3 corresponds to the direction in which the gripping state is moved to the gripping state. The cam member 40 is formed with a long hole 39 in which the driven wheel 37 is movably inserted, and is displaced in the direction of the arrow, so that the driven wheel (7) is displaced in the first direction η, and is displaced in the direction of the arrow κ2. The displacement from the ◎ moving wheel 37 in the second direction 12 is obtained. And, the cam member 4 has a topography
Ml抑· 36a結合在引導部件89的凸緣軸上的 臂38a的另一端部上。上述從動輪观安裝在上述第1連接 部42的第2銷92上。 上述第1連接部42將上述臂38a另-端部的位移——即 上述從動輪37的位移傳遞給上述縫線張力調整單元幻，使 述縫線張力調整單元33從上述夾持狀態向上述灸持解除 動作或者使上述縫線張力調整單元Μ從上述失持解除 狀態向上述夾持狀態動作。 17 201037119 上述第2連接部43將上述驅動 •+-^-#,77 Η ^ 1的驅動力傳遞給上 述了動刀片35’使上述可動刀片35朝 钥則進方向以及後退 方向B12位移。在本實施形態中， A a 由 攻第1連接部42用第1 連接部件94實現。 这樣的_機时線裝置3_從動輪料部件Μ允 許從動輪37朝第味如和糾仙位移、並且阻止上述 從動輪37㈣^和第2方_、财又的箭柳、κ2的方 向位移’在將從動輪37移動自由地嵌人凸輪部件仙的長孔 39中的狀許，凸輪部件個方他㈣移使上述從 動輪37朝第】方向η位移，凸輪部件4〇向另—個方向κ2的位 移使上述從動輪37鮮2方向職移，從㈣夠高精度地切 換縫線張力調整單元33的祕狀態和祕解除狀態。 並且，由於將從動輪37嵌入凸輪部件40的長孔39中， 用第1凸輪面81和第2凸輪面82承載該從動輪37而構成，因 此即使作業者的手或周圍的物體等不小心接觸而產生的衝 擊力作用於第1和第2連接部42、43，從動輪37也會與第^口 第2凸輪面82中的某一個或者兩者抵接，能夠防止離縫線張 力調整單元33最近的第2連接部件96位移，並解除了面線 A、上飾線Β和底線C的夾持狀態這樣的問題。 本發明能夠以不脫離其精神和主要特徵的各種形態來 實施。因此’上述實施形態所有點只不過是一個例子，本 發明的範圍為權利要求所述的範圍，並不受說明書文本的 任何限制。而且’屬於權利要求範圍内的變形或變更都在 本發明的範圍之内。 18 201037119 【圖式簡單說明3 第1圖為表示本發明一個實施形態的缝紉機的剪線裝 置的結構的系統圖； 第2圖為縫紉機的剪線裝置的分解透視圖； 第3圖為設置了剪線裝置的縫紉機的透視圖； ❹ 〇 第4Α圖〜第4Ε圖為用來說明縫紉機的剪線裝置的動 作的說明圖，第4Α圖表示可動刀片即將進入右面線的線環 中之前的狀態；第4Β圖表示右面線被面線旋梭的外周部推 擴開的狀態；第4C圖表示右面線不能完全抵抗面線旋梭外 周部向寬度方向兩側的推擴力而被剪斷的狀態，第4D圖表 示右面線、中央面線和左面線不能完全抵抗面線旋梭的向 外推擴力而被剪斷，底線越過面線旋梭的外周部嵌入剪線 器刃部的狀態，第4Ε圖表示可動刀片正常地進入面線和底 線的各線環中的狀態； 第5圖為表示本發明其他實施形態的縫紉機的剪線裝 置的結構的分解透視圖； 第6圖為表示現有技術的縫幼機的剪線裝置的結構的 透視圖。 【主要元件符號說明】 1…剪線裝置 2…氣壓缸 2a…彈簧 3…活塞桿 5…聯動軸 6···凸輪部件 6a…第1凸輪面 6b…第2凸輪面 •推桿 4…連接塊 19 201037119 8…第1銷 36···第1銷 9…第1擺臂 3 6a…螺检 10…第2銷 37…從動輪 11…刀片驅動桿 38…擺臂 12…可動刀片 38a…臂 13…第3銷 39…長孔 14…第4銷 40···凸輪部件 15…第5銷 41…驅動部 16…支架 42…第1連接部 17…支持框 43…第2連接部 18…第6銷 50…基板 19…第2擺臂 51…夾持器 20…從動輪 52…筒狀保持片 21…第7銷 53…夾持解除銷 23…連接桿 54…操作片 30…剪線裝置 55a、55b···夾持片 30a…剪線裝置 56a、56b···通孔 31…多針雙重環縫紉機 57…縫線引導片 32···縫紉機主體 58a、58b…縫線穿插孔 33…縫線張力調整單元 59…線道引導部 34…針板 61、62、63、64、65...線道引 35…可動刀片 導部件 35a…面線旋梭 66…線道金屬件 35b…底線旋梭 67···通孔 20 201037119 69…底線鬆弛部 103…第5連接部件 70、7卜72、73、74…底線引 104…第4銷 導片 105…第5銷Ml 36a is bonded to the other end of the arm 38a on the flange shaft of the guiding member 89. The driven wheel is attached to the second pin 92 of the first connecting portion 42. The first connecting portion 42 transmits the displacement of the other end portion of the arm 38a, that is, the displacement of the driven wheel 37 to the suture tension adjusting unit, and causes the suture tension adjusting unit 33 to move from the gripping state to the above. The moxibustion holding operation or the suture tension adjusting unit 动作 is operated from the above-described disengaged release state to the nip state. 17 201037119 The second connecting portion 43 transmits the driving force of the driving drive +-^-#, 77 Η ^ 1 to the movable blade 35' to displace the movable blade 35 in the forward direction and the backward direction B12. In the present embodiment, A a is realized by the first connecting member 94 by the first connecting portion 42. Such a _ machine timing device 3_ driven wheel member Μ allows the driven wheel 37 to be displaced toward the first taste and the sensation, and blocks the direction of the driven wheel 37 (four) and the second party _, Cai Jian's arrow, κ2 The displacement 'moves in the long hole 39 of the driven wheel 37 that is freely embedded in the cam member, and the cam member moves (4) to move the driven wheel 37 toward the θ direction, and the cam member 4 is tilted toward the other. The displacement of the direction κ2 causes the driven wheel 37 to move in the direction of the fresh direction, and the secret state and the secret release state of the thread tension adjusting unit 33 are switched from (4) with high precision. Further, since the driven wheel 37 is fitted into the long hole 39 of the cam member 40, and the driven wheel 37 is carried by the first cam surface 81 and the second cam surface 82, the operator's hand or surrounding objects are not careless. The impact force generated by the contact acts on the first and second connecting portions 42 and 43, and the driven wheel 37 also comes into contact with one or both of the second and second cam faces 82, thereby preventing the tension adjustment of the stitches. The second connecting member 96 closest to the unit 33 is displaced, and the problem of the nip state of the upper thread A, the upper thread and the bottom thread C is released. The present invention can be embodied in various forms without departing from the spirit and essential characteristics thereof. Therefore, the above-mentioned embodiments are merely examples, and the scope of the present invention is defined by the scope of the claims, and is not limited by the text of the specification. Further variations or modifications within the scope of the claims are intended to be within the scope of the invention. 18 201037119 [Brief Description of the Drawings] Fig. 1 is a system diagram showing the configuration of a thread trimming device for a sewing machine according to an embodiment of the present invention; Fig. 2 is an exploded perspective view of the thread trimming device of the sewing machine; A perspective view of the sewing machine of the thread trimming device; ❹ 〇 4th to 4th drawings are explanatory diagrams for explaining the operation of the thread trimming device of the sewing machine, and Fig. 4 is a view showing the state before the movable blade is about to enter the wire loop of the right thread Fig. 4 is a view showing a state in which the right line is pushed and expanded by the outer peripheral portion of the upper hook; and Fig. 4C shows that the right line cannot be completely sheared against the pushing force of the outer circumference of the upper hook to the width direction. State, the 4D diagram shows that the right line, the center line, and the left line cannot be completely sheared against the outward pushing force of the upper hook, and the bottom line is inserted into the state of the cutter edge beyond the outer circumference of the upper hook. 4 is a view showing a state in which the movable blade normally enters each of the upper and lower thread loops; and FIG. 5 is an exploded perspective view showing the structure of the thread trimming device of the sewing machine according to another embodiment of the present invention; A perspective view showing the structure of juvenile seam thread trimmer machine of the prior art. [Description of main component symbols] 1...Thread trimming device 2...Pneumatic cylinder 2a...Spring 3...Piston rod 5...Coupling shaft 6···Cam member 6a...First cam surface 6b...Second cam surface•Push rod 4...Connection Block 19 201037119 8...first pin 36···first pin 9...first swing arm 3 6a...thread check 10...second pin 37...driven wheel 11...blade drive lever 38...swing arm 12...movable blade 38a... Arm 13...third pin 39...long hole 14...fourth pin 40···cam member 15...5th pin 41...drive unit 16...bracket 42...first connection portion 17...support frame 43...second connection portion 18 ...the sixth pin 50...the substrate 19...the second swing arm 51...the gripper 20...the driven wheel 52...the cylindrical holding piece 21...the seventh pin 53...the clamping release pin 23...the connecting rod 54...the operating piece 30...cut Wire device 55a, 55b··· holding piece 30a... thread cutting device 56a, 56b···through hole 31...multi-needle double ring sewing machine 57... stitching guide piece 32···sewing machine body 58a, 58b...sewn threading Jack 33... suture tension adjusting unit 59... lane guide 34... needle plate 61, 62, 63, 64, 65... lane guide 35... movable blade guide 35a... upper thread Shuttle 66...way metal piece 35b...bottom wire hook 67···through hole 20 201037119 69...bottom line slack unit 103...5th connecting member 70,7b 72,73,74...bottom line lead 104...4th pin guide piece 105...5th pin
75…彎針 79…支架 81…第1凸輪面 82…第2凸輪面 83…電磁螺線管 84…插棒式鐵芯 85…連接件 86…連接轴 87…連接塊 88…聯動軸 89…引導部件 90…引導筒部分 91…凸緣部 92…第2銷 94…第1連接部件 95…第3銷 %…第2連接部件 97…轉動轴 99…推壓片 100…回歸輔助彈簧 101…第3連接部件 102···第4連接部件 106…第6銷 107·.·第 7銷 108…第8銷 109…第9銷 121…從動輪引導部件 A…夾持面線75...bent needle 79...bracket 81...first cam surface 82...second cam surface 83...electromagnetic solenoid 84...bar core 85...connector 86...connecting shaft 87...connecting block 88...linking shaft 89... Guide member 90...guide cylinder portion 91...flange portion 92...second pin 94...first connection member 95...third pin %...second connection member 97...rotation shaft 99...pushing piece 100...return auxiliary spring 101... Third connecting member 102···fourth connecting member 106...seventh pin 107·.·seventh pin 108...eighth pin 109...ninth pin 121...driven wheel guide member A... clamping upper thread
Al、A2、A3…面線 A1…箭頭 A2…箭頭 A2…中央面線 A3…左面線 A11,A12…箭頭 B卜B2...箭頭 B11…前進方向 B12…後退方向 C…底線 a、C2.·.箭頭 Ρ…位置 S…針 J1…第1方向 J2…第2方向 ία、Κ2…方向 21Al, A2, A3... face line A1... arrow A2... arrow A2... center line A3... left line A11, A12... arrow B b B2... arrow B11... heading direction B12... back direction C... bottom line a, C2. ·.arrow Ρ...position S...needle J1...first direction J2...second direction ία, Κ2...direction 21