201215728 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種安裝於縫紉機之被縫製物之切斷裝 置，且尤其關於一種不論有無縫製均可切斷布、皮革等被 縫製物之縫幼機之被縫製物切斷裝置。 【先前技術】 為了切斷由縫紉機縫製之布端，例如專利文獻丨所揭 示，提出包含布端裁斷裝置之縫紉機。根據如此之縫紉 機，可於切斷布端之後，與此連動地依序進行縫製。 先前之附有布端裁斷裝置之平縫機中之縫紉針、旋梭及 布端裁斷裝置之標準配置例係示於例如圖丨中。此處，縫 紉針1係自作業者側觀察，於右側設置有凹口部la，且安 裝於省略圖示之針桿之前端，進行升降動作。再者，收容 於縫紉機架2中之供布裝置之布之傳送方向係圖中箭線a之 方向。而且，旋梭3係自作業者側觀察’配置於穿過縫紉 針1之落針位置之供布方向L之右側，且於鉛垂面内進行旋 轉之垂直旋梭。而且，該垂直旋梭3係使梭尖3&在與供布 方向A相同之方向上進入縫紉針丨之右側，且於縫紉針j之 右側捕捉縫紉線4之線圈4a。布端裁斷裝置5係藉由與縫製 動作同步地上下受到進退驅動之活動裁刀5a、與固定地安 裝於該活動裁刀5a之下方之固定裁刀5b之協動，而依序裁 斷布端者’且於縫紉針1之落針位置之右側配置在沿著與 供布方向A相反之方向僅距離落針位置適當距離之位置 上’依序地縫製該位置上經裁斷之布。 156885.doc 201215728 ^^成係示於圖心圖2所示之構成係附有布端裁斷 縫匆機之切斷機構。該縫幼機係自作業者側觀察， ::1之凹口部1a朝向右側配置。又，藉由將自上方觀察 沿者順時針方向旋轉驅動之水平旋梭6配置於沿著穿過針'1 之落針位置之供布方向之線L之右側，而使梭尖“以沿著 供布方向A之方向進入縫幼針!之右側，且於縫紉針!之右 “捕捉縫鲂線4之縫紉線圈4a。而且’布端裁斷裝置5係在 料位置之右側配置於沿著與供布方向域反之方向距離 洛針位置適當距離之位置。 圖3係表示又’―構成1布端裁斷裝置係安裝於平縫 機。使縫匆針！之凹口部㈣作業者側觀察，朝向左側配 置°又’旋梭7係自作業者側觀察’配置於穿過針！之落針 位置之供布方向線L之左側’且自上方觀察沿著順時針方 向且圖中箭線B之方向進行水平旋轉之水平旋梭。而且， 該水平旋梭7係使梭心以與供布方向A反向之方向進入縫 幼針1之左側，從而於縫幼針!之左側捕捉縫切線4之縫幼 線圈4a。而且’布端裁斷裝置5係於料位置之右側靠近 上述水平旋梭7進行配置。 圖4所示之構成係前文引用之專利文獻α揭示之構成， 此處，布端切斷裝置係安裝㈣幼機中。使縫匆❸之凹 口部la自作業者側觀察配置於右側。Λ，將自上方觀察時 沿著逆時針方向且圖中箭線Ε之方向受到旋轉驅動之水平 旋梭8配置於穿過縫紉針丨之落針位置之供布方向線l之左 側，且使梭尖8a以沿著供布方向a之方向進入縫紉針丨之右 156885.doc 201215728 側，從而於縫紉針1之右側捕捉縫紉線4之線圈4a。布端裁 斷裝置5係於落針位置之右側，靠近上述水平旋梭8進行配 置。 如此之布端切斷裝置5係由例如圖5所示之裁刀驅動機構 進行驅動。該驅動機構係專利文獻2中提出之構成。藉由 縫紉機之上軸11之旋轉運動，固定於該上軸丨丨之偏心凸輪 12之偏心量使驅動桿13產生擺動運動。該運動係經由連桿 14、15使裁刀驅動連桿16進行上下之往復運動。驅動側之 裁斷裁刀1 7係與裁刀驅動連桿〗6 一體地上下往復移動，且 藉由該上下之往復移冑’而利用肖固定裝備於嚙合位置之 固定側之裁斷裁刀18之協動，裁斷傳送至該位置之布。 上述圖1及圖2之共.前夕糾女士 α吐丨…仙„„201215728 6. TECHNOLOGICAL FIELD OF THE INVENTION [Technical Field] The present invention relates to a cutting device for a sewn object attached to a sewing machine, and more particularly to a seam of a sewn material such as a cloth or a leather which can be cut whether it is seamless or not. Sewing device cutting device for the machine. [Prior Art] In order to cut off the cloth end sewn by the sewing machine, for example, as disclosed in the patent document, a sewing machine including a cloth end cutting device is proposed. According to such a sewing machine, after the cloth ends are cut, the sewing can be sequentially performed in conjunction with this. A standard arrangement example of the sewing needle, the hook and the cloth end cutting device in the former sewing machine with the cloth end cutting device is shown, for example, in the drawing. Here, the sewing needle 1 is viewed from the operator side, and the notch portion 1a is provided on the right side, and is attached to the front end of the needle bar (not shown) to perform the lifting operation. Further, the conveying direction of the cloth feeding device accommodated in the sewing frame 2 is in the direction of the arrow a in the drawing. Further, the hook 3 is a vertical hook that is disposed on the right side of the supply direction L passing through the needle drop position of the sewing needle 1 and is rotated in the vertical plane as viewed from the operator side. Further, the vertical hook 3 causes the shuttle tip 3& to enter the right side of the sewing needle in the same direction as the supply direction A, and catches the stitch 4a of the sewing thread 4 on the right side of the sewing needle j. The cloth end cutting device 5 sequentially cuts the cloth end by collaborating with the movable cutter 5a that is driven up and down in synchronization with the sewing operation and the fixed cutter 5b fixedly mounted below the movable cutter 5a. And disposed on the right side of the needle drop position of the sewing needle 1 at a position that is at an appropriate distance from the needle drop position in the direction opposite to the supply direction A, and sequentially cuts the cut cloth at the position. 156885.doc 201215728 ^^ The system shown in Figure 2 is attached to the cutting mechanism with a cloth end cutting seam machine. The slitting machine is viewed from the operator side, and the notch portion 1a of ::1 is disposed toward the right side. Further, the horizontal hook 6 that is rotationally driven in the clockwise direction from the upper side is disposed on the right side of the line L along the supply direction of the needle drop position through the needle '1, so that the tip of the shuttle In the direction of the supply direction A, enter the right side of the sewing needle!, and on the right side of the sewing needle! "Capture the sewing coil 4a of the sewing thread 4. Further, the cloth end cutting device 5 is disposed at a position on the right side of the material position at an appropriate distance from the needle position in the opposite direction to the supply direction. Fig. 3 is a view showing that the constituting 1 cloth end cutting device is attached to the sewing machine. Make a rush of needles! The notch (4) is viewed from the operator's side, and is arranged toward the left side. The 'snap shuttle 7 is viewed from the operator's side. The horizontal hook of the supply direction direction line L of the needle drop position and the horizontal hook that rotates horizontally in the clockwise direction and in the direction of the arrow B in the figure. Further, the horizontal hook 7 is such that the bobbin enters the left side of the slit needle 1 in a direction opposite to the supply direction A, thereby catching the seam young stitch 4a of the slit line 4 on the left side of the slit needle! Further, the cloth end cutting device 5 is disposed on the right side of the material position near the horizontal hook 7 described above. The configuration shown in Fig. 4 is a constitution disclosed in the above-mentioned patent document α, and here, the cloth end cutting device is installed in (4) a baby machine. The notch portion la which makes the seam is hurried is arranged on the right side as viewed from the operator side. Λ, the horizontal hook 8 that is rotationally driven in the counterclockwise direction and in the direction of the arrow Ε in the figure when viewed from above is disposed on the left side of the supply direction line l passing through the needle drop position of the sewing needle, and The tip 8a enters the right side of the sewing needle 156885.doc 201215728 in the direction of the supply direction a, thereby catching the stitch 4a of the sewing thread 4 on the right side of the sewing needle 1. The cloth end cutting device 5 is attached to the right side of the needle drop position and is disposed adjacent to the horizontal hook 8 described above. Such a cloth end cutting device 5 is driven by, for example, a cutter driving mechanism as shown in Fig. 5 . This drive mechanism is a configuration proposed in Patent Document 2. By the rotational movement of the upper shaft 11 of the sewing machine, the amount of eccentricity of the eccentric cam 12 fixed to the upper shaft causes the drive lever 13 to swing. This movement causes the cutter drive link 16 to reciprocate up and down via the links 14, 15. The cutting cutter 7 on the driving side and the cutter driving link 6 are integrally reciprocated up and down, and the cutting cutter 18 equipped on the fixed side of the meshing position is fixed by the vertical reciprocating movement. Coordination, cutting the cloth delivered to the location. Above Figure 1 and Figure 2. The eve of the eve of the α α α spit... 仙 „„
乂 β m市Ij寻問題。乂 β m city Ij search problem.
反撚而產生縫紉線斷 如上所述之問題進行考 I紉線4使用普通之z撚線之情形 I緣於與線之搓撚方向相反之方 果，縫紉線4容易產生反撚，且 頭或細線潼亂等縫製不良。 156885.doc 201215728 圖4所不之構成解決了因圖1、圖2及圖3而產生之問題， 但旋梭及其驅動機構變成專用之構成，在成本方面產生新 問題。另一方面，於圖3或圖4所示之雙針平縫機中，無法 配置布端切斷裝置’上述雙針平縫機係自上方觀察時沿著 ，時針方向或逆時針方向受到水平旋轉之旋梭分別配置於 洛針位置之左右’且於沿著與供布方向直交之方向上配置 有2根針，左右針與旋梭分別協動地形成2條平行之縫合 線。 進而’除上述問題以外，由於先前之附有布端切斷裝置 ^縫妨機係將上述裁斷裁刀之驅動機構自縫初機之驅動系 中去除故而’必需將其組裝於縫勿機本體之機架。因 成為布端切斷裝置組|於縫匆機本體中之專用縫纺 對於不$要切斷裝置之使用者而言，經濟性負擔增 本案申。月人係蓉於上述問題，而以提供如下之縫初機之 端刀斷裝置為目的’提出包含旋轉刀之縫紉機之布端切 斷裝置（專利文獻3)，該縫幼機之布端切斷裝置可自縫幼線 以特定之均-寬度切斷被縫製物，且不論旋梭之配置位置 可均可於梭附近设定切斷裝置，即便於旋梭配置於落 針位置之左右之雙針縫匆機中，亦可與縫製同時地以均一 f度切斷被縫製物’進而，藉由使布端切斷裝置成為與縫 刀機本體獨立之早7〇，而於此後能夠可裝卸地安裝該布端 切斷裝置。 [先前技術文獻】 156885.doc 201215728 [專利文獻] [專利文獻1]曰本專利特開2003-1 81178號公報 [專利文獻2]曰本專利特開2003-1 81177號公報 [專利文獻3]曰本專利特開2007-37650號公報 【發明内容】 [發明所欲解決之問題] 然而’本案申請人提出之縫紉機之布端切斷裝置係旋轉 刀與固定刀安裝於切斷裝置，且自布、皮革等被縫製物之 端部進行切斷者，存在無法自被縫製物之正中間附近之中 途而非自端部進行切斷之問題。因此，存在必需切斷之部 位以外之部分亦切斷、或需要強度之部分亦切斷，從而多 餘地切除被縫製物、或無法保持強度之問題。又，於圖i 至圖3之實施例中，可藉由活動裁刀5a之突入而自中途強 行進行切斷，但需要靜態之突入力，故因材料不同而難以 突入0 本案發明係鑒於上述問題進行研究而成者，其第1目自 在於提供-種不論有無縫製，又，不論材料之厚度或们 如何’均可藉由使活動裁刀一面旋轉一面突入，而自被· 製物之任意位置進行切斷之縫紉機之被縫製物切斷裝置 又’除上述目的以外，本案發明之第2目的在於提供__ 可支樓活動架（旋轉刀）之旋轉中支軸方向（橫方向）之^ 置’限制旋轉刀（活動架）之橫方向（旋轉中支軸方向）h 晃動)’從而可進行穩定且有效之切斷之縫幼機之* 縫製物切斷裳置。進而，除上述目的以外，本案發明之, 156885.doc 201215728 3目的在於提供-種設置有切斷時打開旋轉刀之切斷部， 且非切斷時關閉旋轉刀之切斷部之蓋體構件，從而提昇安 全性之縫紉機之被縫製物切斷裝置。進而，除上述目的以 外，本案發明之第4目的在於提供一種於非切斷位置上不 使旋轉刀旋轉’且當靠近切斷位置時旋轉刀進行旋轉，從 而進-步提昇安全性之縫纺機之被縫製物切斷裝置。又， 除上述目的以外，本案發明之第5目的在於提供一種可使 旋轉刀穩线定位於非切斷位置與切斷位置之被縫製物切 斷裝置。it而，除上述目的以外，本案發明之以目的在 於提供一種於使旋轉刀自非切斷位置移動至切斷位置之作 動機機中設置接通、斷開開關’使縫_本體之動作與驅 動機構之動作分開，即便非缝製時亦可進行切斷之被縫製 物切斷裝置。 [解決問題之技術手段] 為了達成上述第1目的，本案技術方案丨記載之縫紉機之 被縫製物切斷裝置之特徵在於；其係切斷被縫製物者，且 包含固定地安裝於縫紉機本體之固定架、及可活動地安裝 於固定架之活動架；於活動架可轉動地設置有旋轉刀，於 固定架設置有：驅動機構，其經由動力傳遞部驅動上述旋 轉刀；及作動機構，其以使旋轉刀自被縫製物之非切斷位 置移動至被縫製物之切斷位置之方式，使活動架作動； 且，於設置於固定縫紉機本體之底座部側之針板，設置有 與上述旋轉刀協動而切斷被縫製物之固定刀。 為了達成上述第2目的，本案技術方案2記載之縫紉機之 156885.doc 201215728 被縫製物切斷裝置之特徵在於：於上述固定架，設置有可 抵接於上述活動架而支撐旋轉刀之旋轉中支軸方向之位置 之支撐機構。 為了達成上述第3目的，本案技術方案3記載之縫紉機之 被縫製物切斷裝置之特徵在於：於上述縫紉機本體，設置 有與活動架之作動連動而開閉旋轉刀之切斷部之蓋體構 件且上述蓋體構件構成為旋轉刀位於非切斷位置時關閉 旋轉刀之切斷部，旋轉刀位於切斷位置時打開旋轉刀之切 斷部。 為了達成上述第4目的，本案技術方案4記載之縫紉機之 被縫製物切斷裝置之特徵在於：於上述固定架，設置有與 活動架之作動連動而接通、斷開驅動旋轉刀之驅動機構之 第1開關機構，且第丨開關機構構成為，若以使旋轉刀自非 切斷位置移動至切斷位置之方式使活動架作動，則第1開 關機構接通，將驅動機構驅動，而使旋轉刀旋轉；若以使 旋轉刀自切斷位置移動至非切斷位置之方式使活動架作 動，則第1開關機構斷開，使驅動機構之驅動停止，而使 旋轉刀之旋轉停止。 為了達成上述第5目的，本案技術方案5記載之缝紉機之 被縫製物切斷裝置之特徵在於：於上述固定架，設置有將 上述作動機構疋位於旋轉刀之非切斷位置與切斷位置之定 位機構。 為了達成上述第6目的，本案技術方案6記載之縫幼機之 被縫製物切斷裝置之特徵在於：於上述作動機構，設置有 156885.doc 201215728 第2開關機構’且上述第2開關機構係構成為，於斷開時， 即便第1開關機構接通亦不會使驅動機構驅動；於接通 時’若第1開關機構接通’則驅動機構進行驅動，而使旋 轉刀進行旋轉。 [發明之效果] 本案發明之縫紉機之被縫製物切斷裝置係包含固定地安 裝於縫紉機本體之固定架、及可活動地安裝於固定架之活 動架，且於活動架中可轉動地設置有旋轉刀，於固定架中 设置有驅動機構，其經由動力傳遞部驅動上述旋轉刀；及 作動機構，其以使旋轉刀自被縫製物之非切斷位置移動至 被縫製物之切斷位置之方式，使活動架作動；且，於設置 於固定縫紉機本體之底座部側之針板，設置有與上述旋轉 刀協動地切斷被縫製物之固定刀。本案發明之縫紉機之被 縫製物切斷襄置具有如下之效果：若使驅動機構驅動，則 7動力傳遞部，旋轉刀進行旋轉，若藉由作動機構而使 活動架作動，且使旋轉刀自非切斷位置移動至切斷位置 時，則於載置於底座部之被縫製物上旋轉刀與固定刀協 動u不順有無縫紉機本體之縫製，均可自任意位置切斷被 縫製物’故可有效地切斷被缝製物，而不會多餘地切除被 縫製物。 本案發明之縫紉機之被縫製物切斷裝置具有如下之效 果由於在上述固定架設置有可抵接於上述活動架支樓旋 轉刀之旋轉中支轴方向之位置之支揮機構，故而，可限制 # ^ (旋轉刀）相對固定架之橫方向（旋轉令支軸方向）上 156885.doc 201215728 之移動（晃動），從而可進行穩定且有效之切斷。即，若旋 轉刀於橫方向上進行移動，且與固定刀分離，則難以切斷 被縫製物，若旋轉刀壓接於固定刀，則摩擦阻力變大，導 致驅動機構之負荷増Α，但由於藉由支標機構來限制旋轉 刀（活動架）之橫方向（旋轉中支轴方向）上之移動（晃動卜故 而，可使旋轉刀與固定刀之間隔始終保持固定，從而有可 進行平穩之切斷。 本案發明之縫紉機之被縫製物切斷裝置係於上述縫紉機 本體°又置有與活動架之作動連動地開閉旋轉刀之切斷部 之蓋體構件，且上述蓋體構件構成為旋轉刀位於非切斷位 置時，關閉旋轉刀之切斷部，旋轉刀位於切斷位置時打 開旋轉刀之切斷部。如此般，本案發明之縫紉機之被縫製 物切斷裝置設置有關閉非切斷位置上之旋轉刀之切斷部之 蓋體構件，故而具有安全性較高之效果。即，由於在設置 於底座部側之針板上設置有固定刀，因此，於旋轉刀位於 底座部附近之位置（切斷位置）上時，手不會碰到旋轉刀， 而於旋轉刀位於與底座部分離之位置（非切斷位置）時，手 成夠娅到旋轉刀。本案發明之縫紉機之被縫製物切斷裝置 係蓋體構件將位於非切斷位置上之旋轉刀之切斷部關閉， 故而具有不會碰到旋轉刀，安全性極高之效果。 本案發明之縫紉機之被縫製物切斷裝置係於上述固定架 上設置有與活動架之作動連動地接通、斷開驅動旋轉刀之 驅動機構之第⑽關機構，且第⑽關機構構成為若以使旋 轉刀自非切斷位置移動至切斷位置之方式，使活動架作 156885.doc •12- 201215728 動則第1開關機構接通，使驅動機構驅動，從而使旋轉 轉若以使方疋轉刀自切斷位置移動至非切斷位置之方 式，使活動架作動，則第1開關機構斷開，使驅動機構之 驅動停止’從而使旋轉刀之旋轉停止。如此般，由於本案 發明之縫紉機之被縫製物切斷裝置係旋轉刀於非切斷位置 上不進行旋轉，但靠近切斷位置時第1開關機構接通，旋 轉刀進行旋轉，故具有安全性進一步提高之效果。 本案發明之縫紉機之被縫製物切斷裝置係於上述固定架 上ο又置有將上述作動機構定位於旋轉刀之非切斷位置與切 斷位置之定位機構，因此，具有可藉由定位機構而將旋轉 刀穩定地定位於非切斷位置與切斷位置之效果。 本案發明之縫紉機之被縫製物切斷裝置係於上述作動機 構設置有第2開關機構，且上述第2開關機構構成為於斷開 時，即便第1開關機構接通亦不會使驅動機構驅動，而於 接通時，若第1開關機構接通，則驅動機構進行驅動，使 旋轉刀旋轉。本案發明之縫紉機之被縫製物切斷裝置係使 縫紉機本體之動作與驅動機構之動作分開，故具有即便非 縫製時亦可切斷被縫製物之效果。 【實施方式】 縫紉機之被縫製物切斷裝置20係包含固定地安裝於縫幼 機本體21b之固定架41、及可活動地安裝於固定架41之活 動架42。於活動架42可轉動地設置有旋轉刀34。於固定架 41設置有驅動機構37，其係經由動力傳遞部36驅動上述旋 轉刀34 ;及作動機構43 ’其係以使旋轉刀34自被縫製物之 156885.doc -13- 201215728 非切斷位置pi移動至被縫製物之切斷位置P2之方式，使活 動架42作動。於設置於固定縫紉機本體21b之底座部“側 之針板32，設置有與上述旋轉刀34協動地切斷被縫製物之 固定刀38。縫紉機之被縫製物切斷裝置2〇係若將驅動機構 37驅動’則經由動力傳遞部36，旋轉刀34進行旋轉，且若 藉由作動機構43而使活動架42作動，使旋轉刀34自非切斷 位置P1移動至切斷位置1>2，則於載置於底座部22之被縫製 物上旋轉刀3 4與固定刀38進行協動，不論有無縫紉機本體 21b之縫製，均可自任意位置切斷被縫製物，從而可有效 地切斷被縫製物，而不會多餘地切除被縫製物。 縫紉機之被縫製物切斷裝置2〇係於上述固定架41，設置 有可抵接於上述活動架42，支撐旋轉刀34之旋轉中支轴35 方向之位置之支撲機構71，因此’可限制活動架42(旋轉 刀34)相對固定架41之橫方向（旋轉中支軸方向）之移動（晃 動）’從而可進行穩定且有效之切斷。即，若旋轉刀34於 橫方向上移動，與固定刀38分離，則將難以切斷被縫製 物，若旋轉刀34壓接於固定刀，則摩擦阻力變大，導致驅 動機構37之負荷增大’但因藉由支撐機構71來限制旋轉刀 34(活動架42)之橫方向（旋轉中支軸方向）之移動（晃動），故 而’可將旋轉刀34與固定刀38之間隔始終保持為固定，從 而可進行平穩之切斷。 縫紉機之被縫製物切斷裝置20係於上述活動架42，設置 有與活動架42之作動連動地開閉旋轉刀34之切斷部之蓋體 構件8 0。上述盏體構件8 0係構成為旋轉刀3 4位於非切斷位 156885.doc ⑧ 201215728 置P1時關閉旋轉刀34之切斷部，旋轉刀34位於切斷位置P2 時打開力疋轉刀3 4之切斷部。如此般，縫初機之被縫製物切 斷裝置20因設置有關閉非切斷位置ρι上之旋轉刀34之切斷 部之蓋體構件80，故安全性較高。即，由於在設置於底座 部22側之針板32設置有固定刀38，因此’當旋轉刀34位於 底座部22附近之位置（切斷位置p2)時，手不會碰到旋轉刀 34 ’當旋轉刀34位於離開底座部22之位置（非切斷位置ρι) 時，手能夠碰到旋轉刀34。縫紉機之被縫製物切斷裴置2〇 因蓋體構件80將位於非切斷位置P1之旋轉刀34之切斷部關 閉，而不會觸碰旋轉刀34，故安全性極高。 縫幼機之被縫製物切斷裝置2〇係於上述固定架4丨，設置 有與活動架42之作動連動地接通、斷開驅動旋轉刀34之驅 動機構37之第1開關機構44。第！開關機構料係構成為若以 使旋轉刀34自非切斷位置P1移動至切斷位置p2之方式，使 活動架42作動，則第1開關機構44接通，將驅動機構37進 行驅動，使旋轉刀34旋轉，若以使旋轉刀34自切斷位置p2 移動至非切斷位置P1之方式，使活動架42作動，則第i開 關機構44斷開，使驅動機構37之驅動停止，從而使旋轉刀 34之彡疋轉停止。如此般，縫紉機之被縫製物切斷裝置係 於非切斷位置P1上旋轉刀34不進行旋轉，而若靠近切斷位 置P2，則第1開關機構44接通，旋轉刀34進行旋轉，因 此，安全性進一步變高。 縫紉機之被縫製物切斷裝置2〇係於上述固定架41，設置 有將上述作動機構43定位於旋轉刀34之非切斷位置ρι與切 156S85.doc 201215728 斷位置P2之定位機構46。如此般，縫紉機之被縫製物切斷 裝置20設置有定位機構46，故而，可藉由定位機構46而將 旋轉刀34穩定地定位於非切斷位置p 1與切斷位置p2。 縫紉機之被縫製物切斷裝置20係於上述作動機構43設置 有第2開關機構68。上述第2開關機構68係構成為於斷開 時’即便第1開關機構44接通驅動機構37亦不進行驅動， 於接通時’若第1開關機構44接通則驅動機構37進行驅 動，使旋轉刀34旋轉。縫紉機之被縫製物切斷裝置2〇係使 縫紉機本體21b之動作與驅動機構37之動作分開，故即便 非縫製時亦可切斷被縫製物。 進而’對縫紉機之被縫製物切斷裝置進行詳細說明。圖 6係表示附有被縫製物切斷裝置之縫紉機之整體構成者。 縫紉機21係載置於底座部22上，且於該底座部22之下側安 裝有被縫製物切斷控制箱23。進而，該縫紉機2 1包含驅動 用馬達控制器24與電源開關25，進而，於底座部22之下端 安裝有縫紉機驅動踏板26。於上述被縫製物切斷控制箱23 安裝有切換開關27，並且於縫紉機2 1之上部安裝有旋轉刀 用開關28。 如此般，於底座部22之台面22a上配置有縫紉機21，於 下方配置有缝紉機驅動馬達控制器24，而且，於下部配置 有縫紉機驅動踏板26。又’電源開關25及被縫製物切斷控 制箱2 3係搭載於底座部2 2之下部’尤其被縫製物切斷控制 箱23安裝有可將縫紉機運轉過程中之切斷模式與旋轉刀研 磨模式進行切換之切換開關27 ’且將旋轉刀研磨模式時可 -16- 156885.doc ⑧ 201215728 進行作動之旋轉刀用開關28搭載於縫紉機21上。 於圖ό中於縫紉機21之機頭21a部分可升降地安裝有針桿 29，並且以位於上述針桿29之右側之方式配置有切斷裝置 . 20。藉由該切斷裝置20 ’而與縫紉針及旋梭之縫製動作連 動或獨立地切斷布、皮革等被縫製物。 圖7〜圖9係表示上述機頭部分之詳情者，於機頭21a之下 部，垂直地安裝有針桿29 ^於該針桿29之下端部固著有針 托29a。又，於針桿29之側部垂直地配置有壓腳桿3〇，於 該壓腳桿30之前端部安裝有壓布件3〇a。又，於壓腳桿％ 之惻部安裝有上供布桿31，於該上供布桿31固著有上供布 機構31a。又，沿著被縫製物之移動面於底座部22配置有 針板32，且於上述針板32之下側安裝有下供布機構。 繼而，利用圖7〜圖9說明圖6所示之切斷裝置2〇之構成， 該切斷裝置20包含旋轉刀34、旋轉轴35、驅動㈣及驅動 馬達37»又，該切斷裝置2〇包含撐桿393、39b、^“及固 疋撐上述驅動馬達37係安裝於馬達安裝固定架， 旋轉刀34係安裝於活動架42。進而，該旋轉裝置包含上升 桿43、第1開關機構44、旋轉刀研磨裝置仏及上升桿擋片 46 〇 固著有針托29a之針桿29與固著有上供布機構3U之上供 布桿31係分別可升降及擺動地配置於縫幼機21之頭仏部 分。又，固著有壓布件30a之壓腳桿3〇係可上下運動地配 置於縫幼機21。又，馬達安襄固定架41係藉由以自作業者 側觀察分別可於前後方向、上下方向、左右方向進行位置 156885.doc 201215728 調整之方式構成之固定撐桿39a、39b、39c及40，而固定 於縫紉機21之機頭21a部分。 於馬達安裝固定架41中，可活動地安裝有活動架42。於 活動架42中，可轉動地設置有固著有旋轉刀科之旋轉軸 35。如圖9所示’固定架41係包含側壁4U、41b，且於一 側壁41 b固定有驅動馬達3 7。又，活動架42係設置於上述 側壁41a、41b間，且包含側板、42b。再者，勿庸置 疑，亦可於固定架41及活動架42設置將各自覆蓋之蓋體。 如圖10(a)、（b)所示，於馬達安裝固定架41及活動架42 中，6又置有藉由安裝於馬達安裝固定架之驅動馬達37來 驅動旋轉刀34之捲繞傳動機構。 捲繞傳動機構係包含安裝於驅動馬達37之輸出軸之驅動 輪53.、女裝於$疋轉刀34之旋轉軸35之從動輪61、導輪57、 導輪54以及架設於驅動輪53、導輪57、導輪54及從動輪^ 上之上述驅動帶36。如此般，驅動帶36係由位於中間之導 輪57、54進行導引，藉此，形成特定之傳動路徑。繼而， 為了使如此之之驅動帶36不鬆弛，而將張力輪58配置於中 間並且藉由張力补59上之報59a而自側方擠壓驅動帶 36，藉此’防止驅動帶36之鬆弛。 活動架42係於上部設置有第！支軸55，於中間部配置有 第2支軸56，於下部安裝有旋轉軸35。上述導輪”係可轉 動地安裝於第i支軸55。上述導輪54係可轉動地安裝於第2 支軸56。上述從動輪61係固定地設置於旋轉軸”。如圖 10、11所不，第1支軸55之兩端係自活動架42之側板42a、 156885.doc . ⑧ 201215728 42b突出，由形成於固定架41之上部導引槽4ic、4k導 弓丨。第2支軸56之兩端亦自活動架42之側板42&、4孔突 出，由形成於固定架4i之下部導引槽41d、41d導引。因 此，如圖11所示’活動架42係以自作業者側觀察時旋轉刀 34之部分可於上下方向與前後方向上移動之方式安裝於馬 達安裝固定架41。 如圖7所示，第2支軸56之兩端係可轉動地設置於連桿構 件62、62之下部，上述連桿構件62、62係上部可轉動地安 裝於固定架41之側壁4la、41b。第1支轴55之一端係卡合 於呈大致U字狀之凹部43a，上述凹部433係形成於中間部 藉由支軸60而可轉動地安裝於固定架41之一側壁之上 升桿43之下部。如圖1〇所示，於上升桿43之上部，設置有 包含卡止棘爪66之定位桿65及於卡止方向上對卡止棘爪Μ 施力之螺旋彈簧等彈性構件67。於固定架41之側壁41b， 藉由螺絲等而固定有上升桿擋片46。於該上升桿擋片46 , 形成有使上述定位桿65之卡止棘爪66卡止之卡止凹部 46a。進而，於上升桿43 ,配置有由定位桿65進行接通、 斷開之第2開關機構68。 切斷裝置20係如圖i〇(b)所示，於上述定位桿65之卡止 棘爪66卡止於上升桿擋片46之一側時，將旋轉刀34定位於 非切斷位置pl，且如圖10(a)所示，於上述定位桿65之卡止 棘水66卡止於上升桿擋片46之卡止凹部46a時，將旋轉刀 34定位於切斷位置p2。 如圖13、14所示，於固定架41之側壁41 a之下部，藉由 156885.doc 201215728 螺絲等而固定有支撑板7 0。於支撐板7 Ο，設置有支撑螺絲 71。支撐螺絲71係於前端72設置未圖示之接觸滾珠，且藉 由螺帽73來調節前端72之突出量《支撐螺絲71係前端72即 接觸滾珠可與活動架4 2之側板4 2 a接觸，限制活動架4 2之 於旋轉軸35之軸方向上之移動，支撐旋轉刀34之切斷位 置。於活動架4?之侧板42b，藉由連結構件76而固定有覆 蓋旋轉刀34之上部之旋轉刀上蓋體75。旋轉刀上蓋體75之 上部形成導引緣77。於機頭21a之下部，可轉動地安裝有 蓋體構件80。 蓋體構件80係形成為大致u字狀，且包含大致水平延伸 之上構件81、上端連設於上構件81之一端且於上下方向上 延伸之中間構件82、及一端連接於中間構件82之下端且於 大致水平方向上延伸之下構件83。於下構件83，一體地形 成有覆蓋旋轉刀34之下部之旋轉刀下蓋體85。於上構件 81 ’形成有軸承板8 6。軸承板8 6係經由支轴8 9可轉動地連 結於固定在機頭21 a之下部之軸承片87。因此，蓋體構件 80可以支軸89為中心傾轉。又，於軸承板86，設置有滑接 於上述旋轉刀上蓋體75之導引緣77而受導引之導引軸9!。 導引軸91係受到安裝於支軸89之螺旋彈簧等彈性構件”予 以彈壓，而始終滑接於旋轉刀上蓋體75之導引緣77。 以藉由驅動帶36對旋轉軸35傳遞驅動馬達37之驅動之方 式構成。再者，藉由與旋轉刀34之協動而切斷縫製材料之 固定刀38係形成於針板32，由固定刀38與旋轉刀34構成之 切斷點係以自作業者侧觀察可配置於上供布機構3 1 a之右 156885.doc •20- 201215728 :巨：固定於針托29a之未圖示之縫勿針之落針點相距固 =離之位置之方式構成。又’構成為設置於上升桿43之 =:爪66成為與上升桿檔片4㈣合之狀態，使活動架a 與該作動連動而自作業者側來看於上下及前後移動。進 如圖U所示’於固定架41，配置藉由第1支軸55而接 L、斷開之第1開關機構44。—旋轉刀研磨裝㈣可自退 避位置於作業者方向上旋轉，且於研磨時磨石位於可與旋 轉刀34接觸之位置上’藉由未圖示之彈簧而退避至退避位 置0 繼而， 12所示， 對被縫製物切斷控制箱23之構成進行說明。如圖 該裝置分別包含斷路器47、轉接㈣、及繼電器 49，連接於繼電器49之切換開關27係 動信號線50與恆定輸出信號線5丨之方式連接。 以可切換為縫紉機驅 於圖12所示之方塊圖中，自將電源供給至㈣機驅動用 馬達控制器24之電源開關25 ’經由斷路器47，將總電源供 給至轉接器48。進而，將經轉接器48予以轉換電壓之電源 供給至繼電器49。另-方面，以可選擇自縫初機驅動用馬 逹控制器24輸出之縫紉機驅動時之輸出信號（例如鼓風信 號）50及恆定輸出信號51中之任一個之方式，將該等連接 於切換開關27之固定接點’而該開關27之活動接點係連接 於繼電器49之信號側。又，於恆定輸出信號線51之切換開 關27與縫幼機驅動馬達控制器24之間，插入有主旋轉開關 28。另一方面，於兩信號共通使用之正信號線52側，將第 1開關機構44連接於縫初機驅動馬達控制器μ與繼電器49 156885.doc -21· 201215728 之中間。進而，將第2開關機構68連接於縫紉機驅動信號 線50及恆定輪出信號線5丨之縫紉機驅動用馬達控制器“與 主旋轉開關28之間。繼而，藉由各信號而經由繼電器49進 行時序控制，而將由轉接器48供給之電源供給至驅動馬達 37。 於以上之構成中可以下述之方式進行使用。如圖1〇(b) 所示，旋轉刀34位於底座部22之台面22a之上方位置（非切 斷位置P1)時為非切斷狀態。此時，上升桿43於上方支撐 活動架42，定位桿65之卡止棘爪66與上升桿擋片46之一側 卡合。因此’旋轉刀34藉由卡止棘爪66與上升桿擋片46， 而定位於非切斷位置P1。於旋轉刀34定位於非切斷位置ρι 時，如圖11所示，第i支軸55自第1開關機構44分離，因而 第1開關機構44斷開。又，如圖14所示，固定於活動架42 之旋轉刀上蓋體75之導引緣77將蓋體構件80之導引軸91頂 起’使得蓋體構件80之旋轉刀下蓋體85於下方（順時針方 向）旋轉，從而覆蓋（關閉）旋轉刀34之切斷部。因此，於旋 轉刀34位於上方時，旋轉刀下蓋體85將旋轉刀34覆蓋，從 而防止與旋轉刀34不慎接觸。 若抵抗彈性構件67之彈性而將定位桿65關閉，則第2開 關機構68接通’卡止棘爪66自上升桿檔片46之一側脫離， 上升桿43便可以支軸60為中心轉動。如圖i 〇(a)所示，若沿 著逆時針方向轉動上升桿43，則經由第1支軸55將活動架 42下推，使得固定於活動架42之旋轉刀上蓋體乃移動至下 方’藉由彈性構件92而壓接於旋轉刀上蓋體75之導引緣77 156885.doc ⑧ •22- 201215728 之蓋體構件80之導引軸91亦移動至下方，如圖15所示，蓋 體構件80之旋轉刀下蓋體85旋轉至上方（逆時針方向），從 而將旋轉刀34之切斷部打開（開啟）。 又’若沿著逆時針方向轉動上升桿43，則經由第1支軸 55將活動架42下推，使旋轉刀下蓋體85打開，因此，旋轉 刀34與设置於底座部22之台面22a之針板32上之固定刀38 接觸。即，旋轉刀34移動至切斷位置P2，成為可進行切斷 之狀態。此時，定位桿65之卡止棘爪66卡止於上升桿擋片 46之卡止凹部46a，使旋轉刀34定位於切斷位置？2。於旋 轉刀34定位於切斷位置P2時，如圖ls所示，第i支軸“與 第1開關機構44接觸，使得第！開關機構44接通。再者，若 關閉定位桿65，則第2開關機構68接通，若打開定位桿 65 ’則第2開關機構68斷開》又’於固定架41設置有可抵 接於活動架42而支撐旋轉刀34之旋轉中支軸35方向（左右 方向）上之位置之支撐螺絲71。支撐螺絲71係藉由螺帽73 來調節前端72之突出量，前端72即接觸滾珠係抵接於活動 架42之側板42a，限制活動架42(旋轉刀34)相對於固定架41 於旋轉軸35之軸方向（左右方向）上之移動（晃動），從而支 撐旋轉刀34之切斷位置P2。 如圖10(b)所示，若於旋轉刀34定位於非切斷位置…之 狀態下，操作圖6之縫紉機驅動踏板26，則藉由縫紉機驅 動馬達控制器24而將縫紉機21驅動，從而可對未圖示之被 縫製物進行未伴隨切斷作業之縫製作業。於旋轉刀34定位 於非切斷位置P1之狀態時，第i開關機構44斷開，因此， 156885.doc •23· 201215728 傳送至繼電器49之信號被切斷，使得電流不會流入至驅動 馬達37 ’旋轉刀34便不會旋轉。 如圖10(a)所示’於旋轉刀34定位於切斷位置P2之狀態 下’藉由操作縫紉機驅動踏板26，而如上所述，利用縫切 機驅動馬達控制器24將縫紉機21驅動，對未圖示之被縫製 物開始縫製作業。由於第1開關機構44接通，故而與此同 時地自縫紉機驅動馬達控制器24向圖12所示之縫紉機驅動 輸出信號線50傳送輸出。此時，如圖12所示，於切換開關 27切換至信號線5〇侧之情形時，將與縫紉機2〖之驅動同步 之控制仏號供給至繼電器49。繼而，自電源開關25經由斷 路器47供給至轉接器48之驅動電壓經轉換而流入至繼電器 49。而藉由與上述縫紉機21之驅動同步之縫紉機驅動信號 線5〇，自轉接器48供給之電力流入至驅動馬達37，於是與 縫紉機21之驅動同步地使驅動馬達37旋轉驅動。 如圖⑷所示，該驅動馬達37之旋轉力係經由驅動㈣ 傳遞至固定於旋轉軸35之旋轉刀34,藉此，旋轉刀Μ與縫 幼機2i之驅動同步地進行旋轉運動，且與固定刀π協動地 於切斷點縫製被縫製物，且同時地切斷被縫製物。 如上所述，如圖10⑻所示，由於旋轉刀34處於定位於 非切斷位置P1之狀態，&而’若關閉定位桿65則卡止棘爪 66之卡止被解除’第2開關機構⑽接通。於此 f作上升桿43使活動架42移動至下方，使旋轉刀二移動至 = = P2’則第1支軸55將第1開關機構44接通，使驅動 達7進行旋轉驅動。如圖1〇⑷所示，該驅動馬達37之旋 156885.doc -24· 201215728 轉力係經由驅動帶36傳遞至固定於旋轉軸35之旋轉刀34， 使得旋轉刀34—面下降一面切斷被縫製。若藉由上升桿43 之操作使旋轉刀34上升，則第1開關機構44斷開從而中止 旋轉。如此般，切斷裝置20可伴隨著旋轉刀34之下降而使 旋轉刀34旋轉驅動，因此，可自被縫製物之任意位置進行 切斷。 另一方面，於將圖12所示之切換開關27切換至恆定輸出 信號線51側之情形時，當無論縫鲂機21是否驅動，使旋轉 刀用開關28接通時，旋轉指令信號流向繼電， 果，藉由經由斷路器47及轉接器48朝向驅動馬達37之電力 供給而使該驅動馬達37驅動。其結果，使旋轉刀Μ進行旋 轉。此時，可藉由於旋轉刀研磨裝置45中利用彈簧之回復 力使磨石接觸於旋轉刀34，而研磨旋轉刀34。 以上藉由圖示之實施形態說明了本案發明，但本案發明 並不限定於上述實施形態，可於本案發明之技術性思想範 圍内進行錄變I例如於上述實施形態中，❹傳送帶 36作為用以驅㈣轉刀34之料機構’但亦可代替傳送帶 =而使用齒輪排進行驅動。χ，亦可代替圖12所示之繼電 器49，而使用定序器控制驅動馬達37。 被縫製物切斷裝置2G可於縫幼針i之附近設定配置旋轉 刀34之切斷位置’因此，可維持著縫製品質，無論被縫製 物為何種形狀’均可與縫製大致同時或獨立地自縫初線以 均：？度自任意位置切斷被縫製物，從而可提高被縫製物 之-質及生產率1’無需準備設置有被縫製物切斷機構 156885.doc •25· 201215728 之專用縫紉機，可藉由於現有之縫紉機隨後追加被縫製物 切斷裝置20，而提供具有被縫製物切斷功能之縫紉機，因 此’可削減縫紉機本體之成本。 [產業上之可利用性] 本案發明可廣泛用作可安裝於縫紉機且與縫製大致同時 或獨立於縫製地切斷被縫製物之被縫製物切斷裝置。 【圖式簡單說明】 圖1係表示先則之布端裁斷裝置之主要部分立體圖。 圖2係另一先前之布端裁斷裝置之主要部分立體圖。 圖3係又一先前之布端裁斷裝置之主要部分立體圖。 圖4係又一先前之布端裁斷裝置之主要部分立體圖。 圖5係先前之布端裁斷裝置中之裁斷裁刀驅動機構之正 視圖。 圖6係表示本案發明之縫紉機之一實施形態之整體正視 圖。 圖7係圖6之縫紉機之機頭之正視圖。 圖8係圖7之機頭之右側視圖。 圖9係圖7之機頭之左側視圖。 圖10係本案發明之被縫製物切斷裝置之說明圖，圖丨〇(甸 係旋轉刀位於切斷位置時之正視圖，圊1〇(b)係旋轉刀位於 非切斷位置（上升位置）時之正視圖。 圖11係圖10之被縫製物切斷裝置之後視圖。 圖1 2係表示被縫製物切斷裝置之控制裝置之構成之方塊 圖0 156885.doc % ⑧ 201215728 圖13係被縫製物切斷裝置之主要部分立體圖。 圖14係圖13之被縫製物切斷裝置之非切斷時之說明圖。 圖15係圖13之被縫製物切斷裝置之切斷時之說明圖。 【主要元件符號說明】 1 針 1 a 凹口部 2 縫紉機架 3 垂直旋梭 3a 梭尖 4 縫紉線 4a 線圈 5 布端裁斷裝置 5a 活動裁刀 5b 固定裁刀 6 水平旋梭 6a 梭尖 7 水平旋梭 7a 梭尖 8 水平旋梭 8a 梭尖 11 上轴 12 偏心凸輪 13 驅動桿 14 連桿 156885.doc -27- 連桿 裁刀驅動連桿 裁斷裁刀 裁斷裁刀（固定側） 被縫製物切斷裝置 縫紉機 機頭 縫紉機本體 底座咅P 台面 被缝製物切斷控制箱 縫紉機驅動馬達控制器 電源開關 缝紉機驅動踏板 切換開關 旋轉刀用開關 針桿 針托 壓腳桿 壓布件 上供布桿 上供布機構 針板 下供布機構 ⑧ -28- 201215728 34 旋轉刀 35 旋轉轴 36 驅動帶（動力傳遞部） 37 驅動馬達（驅動機構） 38 固定刀 39a 固定撐桿 39b 固定撐桿 39c 固定撐桿 40 固定撐桿 41 馬達安裝固定架 41a 側壁 41b 側壁 41c 上部導引槽 41d 下部導引槽 42 活動架 42a 側板 42b 側板 43 上升桿（作動機構） 43a 凹部 44 第1開關機構 45 旋轉刀研磨裝置 46 上升桿擋片（定位機構) 46a 卡止凹部 47 斷路器 156885.doc .29- 轉接器 繼電器 縫幼機驅動信號線 恒定輸出信號線 正信號線 驅動輪 導輪 第1支軸 第2支軸 導輪 張力輪 張力桿 輥 支軸 從動輪 連桿構件 定位桿 卡止棘爪 彈性構件 第2開關機構 支樓板 支撐螺絲（支撐機構） 前端 螺帽 ⑧ -30- 201215728 75 旋轉刀上蓋體 76 連結構件 77 導引緣 80 蓋體構件 81 上構件 82 中間構件 83 下構件 85 旋轉刀下蓋體 86 軸承板 87 軸承片 89 支軸 91 導引軸 92 彈性構件 PI 非切斷位置 P2 切斷位置 156885.doc -31 ·The sewing thread is broken and the problem as described above is tested. I. The thread 4 uses the ordinary z-line. The result is the opposite of the direction of the line. The sewing thread 4 is prone to rumbling, and the head Or poor sewing, such as fine lines. 156885. Doc 201215728 The configuration of Fig. 4 solves the problems caused by Fig. 1, Fig. 2 and Fig. 3, but the hook and its drive mechanism become a dedicated structure, which creates new problems in terms of cost. On the other hand, in the double needle sewing machine shown in Fig. 3 or Fig. 4, the cloth end cutting device cannot be disposed. The above-mentioned double needle sewing machine is horizontally or counterclockwise when viewed from above. The rotary hooks are respectively disposed on the left and right sides of the needle position, and two needles are disposed in a direction orthogonal to the supply direction, and the left and right needles and the hook respectively cooperate to form two parallel stitches. Furthermore, in addition to the above problems, since the previously attached cloth end cutting device is used to remove the driving mechanism of the cutting knife from the driving system of the sewing machine, it is necessary to assemble it into the sewing machine body. The rack. Because it becomes a cloth end cutting device group|Special sewing in the body of the sewing machine. For users who do not need to cut the device, the economic burden is increased. In order to provide the end cutting device of the sewing machine as follows, the present invention proposes a cloth end cutting device for a sewing machine including a rotary knife (Patent Document 3), and the cloth end of the sewing machine is cut. The breaking device can cut the sewn object at a specific uniform width from the sewing line, and the cutting device can be set near the shuttle regardless of the position of the hook, even if the hook is disposed at the left and right positions of the needle drop position. In the double stitch sewing machine, the sewn object can be cut at a uniform f degree simultaneously with the sewing, and further, the cloth end cutting device can be made 7 独立 earlier than the main body of the sewing machine, and thereafter can be The cloth end cutting device is attached and detached. [Previous Technical Literature] 156885. [Patent Document 1] [Patent Document 1] Japanese Laid-Open Patent Publication No. 2003-1 81178 [Patent Document 2] Japanese Patent Laid-Open Publication No. 2003-1 81177 [Patent Document 3] Japanese Patent Laid-Open No. 2007- Japanese Patent Publication No. 37650 [Draft of the Invention] [Problems to be Solved by the Invention] However, the cloth end cutting device of the sewing machine proposed by the applicant of the present invention is a rotary knife and a fixed knife attached to the cutting device, and the sewing material such as cloth and leather is sewn. If the end portion is cut, there is a problem that it cannot be cut from the vicinity of the middle of the object to be sewn, and not from the end portion. Therefore, there is a problem that the portion other than the portion to be cut is also cut, or the portion requiring the strength is cut, so that the object to be sewn is excessively removed, or the strength cannot be maintained. Further, in the embodiment of FIGS. i to 3, the cutting can be forcibly performed from the middle by the penetration of the movable cutter 5a, but static penetration force is required, so that it is difficult to protrude due to different materials. The problem is that the first one is to provide - regardless of the seamless system, and regardless of the thickness of the material or how they can be made by making the movable cutter rotate while protruding into the body, In addition to the above object, the second object of the present invention is to provide a __ supportable movable frame (rotary blade) in the direction of the pivot (horizontal direction) of the sewing machine cutting device for cutting the sewing machine at any position. The setting 'limits the horizontal direction of the rotary blade (moving frame) (the direction of the pivot in the middle of the rotation) h is swaying', so that the sewing machine can be stably and effectively cut. Further, in addition to the above objects, the invention of the present invention, 156885. Doc 201215728 3 The purpose of the present invention is to provide a cover member in which a cutting portion for opening a rotary blade is opened at the time of cutting, and a cutting member for closing the rotary blade is not cut, thereby improving the safety of the sewing machine. Device. Further, in addition to the above object, a fourth object of the present invention is to provide a sewing machine that does not rotate the rotary blade at a non-cutting position and rotates the rotary blade when approaching the cutting position, thereby further improving safety. Machine sewing device cutting device. Further, in addition to the above object, a fifth object of the present invention is to provide a workpiece cutting device which can stably position a rotary blade at a non-cutting position and a cutting position. In addition to the above objects, an object of the present invention is to provide an action of turning on and off a switch to move and rotate a rotary knife from a non-cutting position to a cutting position. The action of the mechanism is separated, and the sewn material cutting device can be cut even when it is not sewn. [Means for Solving the Problems] In order to achieve the above-described first object, the sewing object cutting device for a sewing machine according to the present invention is characterized in that the object to be sewn is cut and fixedly attached to the sewing machine body. a fixed frame and a movable frame movably mounted to the fixed frame; a rotating blade rotatably disposed on the movable frame; the fixed frame is provided with: a driving mechanism that drives the rotating blade via a power transmission portion; and an actuating mechanism The movable frame is actuated so that the rotary blade moves from the non-cutting position of the object to be sewn to the cutting position of the object to be sewn; and the needle plate provided on the side of the base portion of the fixed sewing machine body is provided with the rotation The knife cooperates to cut the fixed knife of the sewn object. In order to achieve the above second object, the sewing machine of the second aspect of the present invention is 156885. Doc 201215728 The workpiece cutting device is characterized in that the fixing frame is provided with a support mechanism that can abut against the movable frame to support the position of the rotation axis in the rotation direction of the rotary blade. In the sewing machine main body cutting device according to the third aspect of the invention, the sewing machine main body is provided with a cover member that opens and closes the cutting portion of the rotary cutter in conjunction with the movement of the movable frame. Further, the lid member is configured to close the cutting portion of the rotary blade when the rotary blade is at the non-cutting position, and to open the cutting portion of the rotary blade when the rotary blade is at the cutting position. In order to achieve the above-mentioned fourth object, the sewing machine cutting device according to the fourth aspect of the invention is characterized in that the fixing frame is provided with a driving mechanism that opens and closes the driving rotary blade in conjunction with the movement of the movable frame. The first switching mechanism is configured such that when the movable frame is actuated to move the rotary blade from the non-cutting position to the cutting position, the first switching mechanism is turned on, and the driving mechanism is driven to When the movable blade is actuated to move the rotary blade from the cutting position to the non-cut position, the first switching mechanism is turned off, the driving of the drive mechanism is stopped, and the rotation of the rotary blade is stopped. According to a fifth aspect of the invention, in the sewing material cutting device of the sewing machine according to the fifth aspect of the invention, the fixing frame is provided with the operating mechanism being disposed at a non-cutting position and a cutting position of the rotating blade. Positioning mechanism. In order to achieve the above-mentioned sixth object, the sewing material cutting device of the slitting machine according to the sixth aspect of the present invention is characterized in that the actuating mechanism is provided with 156885. Doc 201215728 The second switching mechanism 'and the second switching mechanism are configured such that, when the first switching mechanism is turned on, the driving mechanism is not driven; when the first switching mechanism is turned on, the first switching mechanism is turned on. The drive mechanism is driven to rotate the rotary knife. [Effect of the Invention] The sewing material cutting device of the sewing machine according to the present invention includes a fixing frame fixedly attached to the sewing machine body, and a movable frame movably mounted to the fixing frame, and is rotatably provided in the movable frame a rotary cutter having a drive mechanism that drives the rotary cutter via a power transmission portion; and an actuating mechanism that moves the rotary cutter from a non-cut position of the workpiece to a cut position of the workpiece to be sewn The movable frame is actuated, and a fixed blade that cuts the object to be sewn in cooperation with the rotary blade is provided on the needle plate provided on the side of the base portion of the fixed sewing machine body. The workpiece cutting device of the sewing machine according to the present invention has an effect that when the driving mechanism is driven, the power transmitting portion and the rotating blade rotate, and the movable frame is actuated by the actuating mechanism, and the rotating blade is driven by When the cutting position is moved to the cutting position, the rotary knife and the fixed knife cooperate with each other on the workpiece to be placed on the base portion, and the sewing machine body can be sewn from any position. The sewn material is effectively cut without excessively cutting the sewn material. The sewing material cutting device for a sewing machine according to the present invention has the following effects: since the fixing frame is provided with a support mechanism that can abut against the position of the rotation axis in the rotation of the movable frame branch rotary blade, the restriction mechanism can be restricted. # ^ (rotary knife) relative to the transverse direction of the fixed frame (rotation of the fulcrum direction) on the 156885. Doc 201215728's movement (sloshing) for stable and efficient cutting. In other words, when the rotary blade moves in the lateral direction and is separated from the fixed blade, it is difficult to cut the object to be sewn. If the rotary blade is pressed against the fixed blade, the frictional resistance is increased, and the load on the drive mechanism is reduced. Since the movement of the rotary blade (moving frame) in the lateral direction (the direction of the fulcrum in the rotation) is restricted by the fulcrum mechanism, the interval between the rotary knives and the fixed knives can be always kept constant, so that smoothing is possible The sewing material cutting device of the sewing machine according to the present invention is a cover member that opens and closes the cutting portion of the rotary blade in conjunction with the movement of the movable frame, and the cover member is configured as When the rotary blade is in the non-cutting position, the cutting portion of the rotary blade is closed, and when the rotary blade is in the cutting position, the cutting portion of the rotary blade is opened. Thus, the sewing device of the sewing machine of the present invention is provided with the closing device. Since the cover member of the cutting portion of the rotary blade is cut at the position, the safety is high. That is, since the fixed blade is provided on the needle plate provided on the base portion side, Therefore, when the rotary blade is located at a position (cutting position) near the base portion, the hand does not touch the rotary blade, and when the rotary blade is located at a position separated from the base portion (non-cut position), the hand is sufficient. In the sewing machine, the workpiece cutting device of the sewing machine of the present invention closes the cutting portion of the rotary blade located at the non-cutting position, so that the sewing blade does not hit the rotary blade, and the safety is extremely high. The sewing material cutting device of the sewing machine according to the present invention is provided with the (10) closing mechanism that opens and closes the driving mechanism that drives the rotary blade in conjunction with the movement of the movable frame, and the (10) closing mechanism is formed on the fixing frame. In order to move the rotary knife from the non-cutting position to the cutting position, the movable frame is made 156885. Doc •12- 201215728 When the first switch mechanism is turned on, the drive mechanism is driven, so that the rotation is turned so that the square turn tool moves from the cut position to the non-cut position, and the movable frame is actuated. The switching mechanism is opened to stop the drive of the drive mechanism, thereby stopping the rotation of the rotary cutter. In the sewing machine cutting device of the present invention, the rotary cutter does not rotate at the non-cutting position, but the first switching mechanism is turned on when the cutting position is approached, and the rotary cutter rotates, thereby providing safety. Further improve the effect. In the sewing machine of the present invention, the sewing device cutting device is attached to the fixing frame, and a positioning mechanism for positioning the operating mechanism at the non-cutting position and the cutting position of the rotating blade is provided, thereby having a positioning mechanism The effect of stably positioning the rotary blade at the non-cutting position and the cutting position. In the sewing material cutting device of the sewing machine according to the present invention, the second switching mechanism is provided in the operating mechanism, and the second switching mechanism is configured to prevent the driving mechanism from being driven even when the first switching mechanism is turned on. When the first switching mechanism is turned on at the time of turning on, the driving mechanism is driven to rotate the rotating blade. In the sewing machine cutting device of the sewing machine of the present invention, since the operation of the sewing machine main body is separated from the operation of the driving mechanism, the sewing object can be cut even when not sewn. [Embodiment] The sewing material cutting device 20 of the sewing machine includes a fixing frame 41 fixedly attached to the sewing machine body 21b, and a movable frame 42 movably attached to the fixing frame 41. A rotary blade 34 is rotatably provided to the movable frame 42. The mounting mechanism 41 is provided with a driving mechanism 37 for driving the rotating blade 34 via the power transmitting portion 36; and the actuating mechanism 43' is adapted to cause the rotating blade 34 to be self-sewn. Doc -13- 201215728 The movable frame 42 is actuated in such a manner that the non-cutting position pi moves to the cutting position P2 of the workpiece. The needle plate 32 provided on the side of the base portion of the fixed sewing machine body 21b is provided with a fixed blade 38 for cutting the object to be sewn in cooperation with the rotary blade 34. The sewing device cutting device 2 of the sewing machine will be When the drive mechanism 37 is driven, the rotary blade 34 is rotated via the power transmission unit 36, and the movable frame 42 is actuated by the actuating mechanism 43, and the rotary blade 34 is moved from the non-cutting position P1 to the cut position 1> Then, the rotary blade 34 and the fixed blade 38 are engaged with each other on the workpiece to be placed on the base portion 22, and the sewing object can be cut from any position regardless of the sewing machine body 21b, so that the workpiece can be cut efficiently. The sewn object is cut without excessively cutting the sewn object. The sewn object cutting device 2 of the sewing machine is attached to the holder 41, and is provided to be abuttable against the movable frame 42 to support the rotation of the rotary blade 34. The support mechanism 71 at the position of the support shaft 35 can therefore be used to limit the movement (sloshing) of the movable frame 42 (the rotary blade 34) with respect to the lateral direction (the direction of the rotation of the support shaft) of the fixed frame 41, thereby being stable and effective. Cut off When the blade 34 moves in the lateral direction and is separated from the fixed blade 38, it is difficult to cut the object to be sewn. When the rotary blade 34 is pressed against the fixed blade, the frictional resistance is increased, and the load on the drive mechanism 37 is increased. By the support mechanism 71, the movement (sloshing) of the lateral direction (the rotation of the movable shaft 42) of the rotary blade 34 (the movable frame 42) is restricted, so that the interval between the rotary blade 34 and the fixed blade 38 can be always kept constant. The sewing machine cutting device 20 of the sewing machine is attached to the movable frame 42 and is provided with a cover member 80 that opens and closes the cutting portion of the rotary blade 34 in conjunction with the movement of the movable frame 42. The body member 80 is configured such that the rotary knife 34 is located at the non-cutting position 156885. Doc 8 201215728 When P1 is set, the cutting portion of the rotary blade 34 is closed, and when the rotary blade 34 is at the cutting position P2, the cutting portion of the rotary cutter 34 is opened. As described above, the workpiece cutting device 20 of the sewing machine is provided with the lid member 80 that closes the cutting portion of the rotary blade 34 on the non-cutting position ρ, so that the safety is high. That is, since the fixed blade 38 is provided on the needle plate 32 provided on the side of the base portion 22, "when the rotary blade 34 is located at a position near the base portion 22 (cut position p2), the hand does not hit the rotary blade 34' When the rotary blade 34 is located away from the base portion 22 (non-cut position ρι), the hand can hit the rotary blade 34. The sewn object cutting device 2 of the sewing machine is closed because the lid member 80 closes the cutting portion of the rotary blade 34 at the non-cutting position P1 without touching the rotary blade 34, so that the safety is extremely high. The sewn object cutting device 2 of the slitting machine is attached to the holder 4, and is provided with a first switching mechanism 44 that opens and closes the driving mechanism 37 that drives the rotary blade 34 in conjunction with the movement of the movable frame 42. The first! The switch mechanism is configured such that when the movable frame 42 is actuated to move the rotary blade 34 from the non-cutting position P1 to the cut position p2, the first switch mechanism 44 is turned on, and the drive mechanism 37 is driven to When the rotary blade 34 rotates and the movable frame 42 is actuated to move the rotary blade 34 from the cutting position p2 to the non-cutting position P1, the i-th switch mechanism 44 is turned off, and the drive of the drive mechanism 37 is stopped. The rotation of the rotary blade 34 is stopped. In this manner, the workpiece cutting device of the sewing machine is not rotated by the rotary blade 34 at the non-cutting position P1, and when the cutting position P2 is approached, the first switching mechanism 44 is turned on, and the rotary blade 34 is rotated. The security is further higher. The sewing machine cutting device 2 is attached to the fixing frame 41, and is provided with the non-cutting position ρι and 156S85 for positioning the operating mechanism 43 at the rotating blade 34. Doc 201215728 Positioning mechanism 46 for position P2. As a result, the sewing device cutting device 20 of the sewing machine is provided with the positioning mechanism 46. Therefore, the rotary blade 34 can be stably positioned by the positioning mechanism 46 at the non-cutting position p1 and the cutting position p2. The sewing device cutting device 20 of the sewing machine is provided with the second switching mechanism 68 in the above-described operating mechanism 43. The second switch mechanism 68 is configured such that when the first switch mechanism 44 is turned on, the drive mechanism 37 is not driven, and when the switch is turned on, the drive mechanism 37 is driven when the first switch mechanism 44 is turned on. The rotary blade 34 rotates. The sewing machine cutting device 2 of the sewing machine separates the operation of the sewing machine main body 21b from the operation of the driving mechanism 37, so that the sewn material can be cut even when not sewn. Further, the sewing machine cutting device for the sewing machine will be described in detail. Fig. 6 is a view showing the overall configuration of a sewing machine with a workpiece cutting device. The sewing machine 21 is placed on the base portion 22, and the workpiece cutting control box 23 is mounted on the lower side of the base portion 22. Further, the sewing machine 2 1 includes a drive motor controller 24 and a power switch 25, and further, a sewing machine drive pedal 26 is attached to the lower end of the base portion 22. A switch 27 is attached to the workpiece cutting control box 23, and a rotary blade switch 28 is attached to the upper portion of the sewing machine 21. In this manner, the sewing machine 21 is disposed on the table top 22a of the base portion 22, the sewing machine drive motor controller 24 is disposed below, and the sewing machine drive pedal 26 is disposed at the lower portion. Further, the 'power switch 25 and the sewn material cutting control box 2 3 are mounted on the lower portion of the base portion 2 2'. In particular, the sewn object cutting control box 23 is attached to the cutting mode and the rotary knife grinding during the operation of the sewing machine. The mode switch switch 27' and the rotary knife grinding mode can be -16-156885. Doc 8 201215728 The rotary knife switch 28 that is activated is mounted on the sewing machine 21. In the figure, a needle bar 29 is attached to the head 21a of the sewing machine 21 so as to be movable up and down, and a cutting device is disposed on the right side of the needle bar 29. 20. By the cutting device 20', the object to be sewn such as cloth or leather is cut in conjunction with or independently of the sewing operation of the sewing needle and the hook. Figs. 7 to 9 show details of the above-described head portion, and a needle bar 29 is vertically attached to the lower portion of the handpiece 21a. A needle holder 29a is fixed to the lower end portion of the needle bar 29. Further, a presser bar 3〇 is vertically disposed on a side portion of the needle bar 29, and a presser member 3〇a is attached to an end portion of the presser bar 30. Further, an upper supply bar 31 is attached to the crotch portion of the presser bar %, and the upper supply mechanism 31a is fixed to the upper supply bar 31. Further, a needle plate 32 is disposed on the base portion 22 along the moving surface of the object to be sewn, and a lower cloth supply mechanism is attached to the lower side of the needle plate 32. Next, the configuration of the cutting device 2 shown in FIG. 6 will be described with reference to FIGS. 7 to 9. The cutting device 20 includes a rotary blade 34, a rotary shaft 35, a drive (four), and a drive motor 37», and the cutting device 2 The ram includes the struts 393, 39b, and the fixed drive motor 37 is attached to the motor mounting bracket, and the rotary blade 34 is attached to the movable frame 42. Further, the rotating device includes the rising rod 43 and the first switching mechanism. 44. Rotary knife grinding device 上升 and rising rod stopper 46 Between the needle bar 29 for holding the needle holder 29a and the cloth supply rod 31 for fixing the upper cloth supply mechanism 3U, the cloth rod 31 can be lifted and swayed separately Further, the presser bar 3 to which the presser member 30a is fixed is disposed in the slit machine 21 so as to be movable up and down. Further, the motor mount bracket 41 is viewed from the operator side. The position can be 156885 in the front-rear direction, the up-and-down direction, and the left-right direction. Doc 201215728 The fixed stays 39a, 39b, 39c and 40 which are configured to be fixed are fixed to the head 21a of the sewing machine 21. In the motor mounting bracket 41, a movable frame 42 is movably mounted. In the movable frame 42, a rotary shaft 35 to which a rotary knife is fixed is rotatably provided. As shown in Fig. 9, the fixing frame 41 includes side walls 4U, 41b, and a driving motor 37 is fixed to a side wall 41b. Further, the movable frame 42 is disposed between the side walls 41a and 41b and includes side plates 42b. Furthermore, it is needless to say that the cover 41 and the movable frame 42 can be provided with covers to cover each. As shown in FIGS. 10(a) and (b), in the motor mounting bracket 41 and the movable frame 42, a winding drive for driving the rotary blade 34 by a drive motor 37 attached to the motor mounting bracket is disposed. mechanism. The winding drive mechanism comprises a drive wheel 53 mounted on the output shaft of the drive motor 37. The driven wheel 61 of the rotating shaft 35 of the rotary cutter 34, the guide pulley 57, the guide pulley 54, and the above-mentioned driving belt 36 which are mounted on the driving wheel 53, the guide pulley 57, the guide pulley 54, and the driven pulley. In this manner, the drive belt 36 is guided by the intermediate guide wheels 57, 54 thereby forming a particular drive path. Then, in order to prevent the drive belt 36 from slacking, the tension pulley 58 is disposed in the middle and the drive belt 36 is pressed from the side by the tension 59a on the tension compensation 59, thereby preventing the slack of the drive belt 36. . The movable frame 42 is provided with the first part on the upper part! The support shaft 55 has a second support shaft 56 disposed at an intermediate portion thereof and a rotary shaft 35 attached to a lower portion thereof. The guide wheel is rotatably attached to the i-th shaft 55. The guide pulley 54 is rotatably attached to the second support shaft 56. The driven wheel 61 is fixedly disposed on the rotary shaft. As shown in Figures 10 and 11, the two ends of the first support shaft 55 are from the side plates 42a, 156885 of the movable frame 42. Doc . 8 201215728 42b protrudes and is guided by the guide grooves 4ic, 4k formed on the upper portion of the holder 41. Both ends of the second support shaft 56 are also protruded from the side plates 42 & 4 of the movable frame 42 and guided by the guide grooves 41d and 41d formed at the lower portions of the fixed frame 4i. Therefore, as shown in Fig. 11, the movable frame 42 is attached to the motor mounting bracket 41 so that the portion of the rotary blade 34 can be moved in the vertical direction and the front-rear direction when viewed from the operator side. As shown in FIG. 7, the two ends of the second support shaft 56 are rotatably disposed at the lower portions of the link members 62, 62, and the upper portions of the link members 62, 62 are rotatably attached to the side walls 41a of the fixed frame 41, 41b. One end of the first support shaft 55 is engaged with a concave portion 43a having a substantially U-shape, and the concave portion 433 is formed at an intermediate portion of the rising rod 43 rotatably attached to one side wall of the fixed frame 41 by the support shaft 60. Lower part. As shown in Fig. 1A, an elastic member 67 such as a positioning rod 65 including a locking pawl 66 and a coil spring that biases the locking pawl in the locking direction is provided on the upper portion of the rising rod 43. The rising rod stopper 46 is fixed to the side wall 41b of the fixing frame 41 by screws or the like. In the rising lever stopper 46, a locking recess 46a for locking the locking pawl 66 of the positioning lever 65 is formed. Further, a second switching mechanism 68 that is turned on and off by the positioning lever 65 is disposed on the raising lever 43. As shown in FIG. 2B, the cutting device 20 positions the rotary blade 34 at the non-cutting position pl when the locking pawl 66 of the positioning lever 65 is locked to one side of the rising lever stopper 46. As shown in FIG. 10(a), when the locking spine 66 of the positioning lever 65 is locked to the locking recess 46a of the rising lever stopper 46, the rotary blade 34 is positioned at the cutting position p2. As shown in Figures 13 and 14, on the lower side of the side wall 41a of the holder 41, by 156885. Doc 201215728 A support plate 70 is fixed to the screw or the like. On the support plate 7 Ο, a support screw 71 is provided. The support screw 71 is provided with a contact ball (not shown) at the front end 72, and the protruding amount of the front end 72 is adjusted by the nut 73. The front end 72 of the support screw 71, that is, the contact ball can be in contact with the side plate 4 2 a of the movable frame 4 2 . The movement of the movable frame 4 2 in the axial direction of the rotary shaft 35 is restricted to support the cutting position of the rotary blade 34. The rotary blade upper cover 75 covering the upper portion of the rotary blade 34 is fixed to the side plate 42b of the movable frame 4 by the connecting member 76. The upper portion of the upper cover 75 of the rotary blade forms a leading edge 77. A cover member 80 is rotatably attached to the lower portion of the head 21a. The cover member 80 is formed in a substantially U-shape and includes a substantially horizontally extending upper member 81, an intermediate member 82 whose upper end is connected to one end of the upper member 81 and extends in the up and down direction, and one end connected to the intermediate member 82. The lower end and the lower member 83 extend in a substantially horizontal direction. The lower member 83 is integrally formed with a rotating knife lower cover 85 covering the lower portion of the rotary blade 34. A bearing plate 86 is formed on the upper member 81'. The bearing plate 86 is rotatably coupled via a support shaft 8 9 to a bearing piece 87 fixed to the lower portion of the head 21a. Therefore, the cover member 80 can be tilted about the support shaft 89. Further, the bearing plate 86 is provided with a guide shaft 9 that is slidably guided to the leading edge 77 of the rotary blade upper cover 75. The guide shaft 91 is biased by an elastic member such as a coil spring attached to the support shaft 89, and is always slidably coupled to the leading edge 77 of the rotary blade upper cover 75. The drive motor is transmitted to the rotary shaft 35 by the drive belt 36. Further, the fixed blade 38 for cutting the sewing material by the cooperation with the rotary blade 34 is formed on the needle plate 32, and the cutting point formed by the fixed blade 38 and the rotary blade 34 is Observed from the operator side can be arranged on the right supply mechanism 3 1 a to the right 156885. Doc •20- 201215728 : Giant: It is fixed in the unillustrated seam of the needle holder 29a. The needle placement point is not so close to the solid position. Further, the configuration is such that the claws 66 are placed in the state of the rising levers 4 (4), and the movable frame a moves in the up and down and the front and rear directions as viewed from the operator side in conjunction with the movement. As shown in Fig. U, the first switch mechanism 44 is connected to the holder 41 by the first support shaft 55. - The rotary knife grinding device (4) is rotatable in the direction of the operator from the retracted position, and the grinding stone is located at a position where it can be in contact with the rotary blade 34 during grinding, and is retracted to the retracted position by a spring (not shown). The configuration of the workpiece cutting control box 23 will be described. As shown in the figure, the device includes a circuit breaker 47, a transfer (four), and a relay 49, and the switch signal 27 connected to the relay 49 is connected to the constant output signal line 5丨. In the block diagram shown in Fig. 12, which can be switched to the sewing machine, the power source is supplied to the adapter 48 via the circuit breaker 47 from the power switch 25' supplied to the (four) machine drive motor controller 24. Further, a power source that converts the voltage via the adapter 48 is supplied to the relay 49. On the other hand, the one of the output signals (for example, the air blowing signal) 50 and the constant output signal 51 when the sewing machine is driven by the sewing machine for driving the horse-riding controller 24 can be selected to be connected to the sewing machine. The fixed contact of the switch 27 is connected and the active contact of the switch 27 is connected to the signal side of the relay 49. Further, a main rotary switch 28 is inserted between the switching switch 27 of the constant output signal line 51 and the slit machine drive motor controller 24. On the other hand, on the positive signal line 52 side common to the two signals, the first switching mechanism 44 is connected to the slit starter drive motor controller μ and the relay 49 156885. Doc -21· 201215728 in the middle. Further, the second switching mechanism 68 is connected between the sewing machine drive signal line 50 and the constant drive output signal line 5 of the sewing machine drive motor controller "and the main rotary switch 28. Then, the signal is transmitted via the relay 49 by each signal. The timing control is performed, and the power supplied from the adapter 48 is supplied to the drive motor 37. In the above configuration, it can be used in the following manner. As shown in Fig. 1(b), the rotary blade 34 is located on the table top of the base portion 22. When the position above 22a (non-cutting position P1) is the non-cut state, at this time, the raising lever 43 supports the movable frame 42 at the upper side, and the locking pawl 66 of the positioning lever 65 and the side of the rising lever blocking piece 46 are stuck. Therefore, the rotary blade 34 is positioned at the non-cutting position P1 by the locking pawl 66 and the rising lever blank 46. When the rotary blade 34 is positioned at the non-cutting position ρι, as shown in FIG. The i-branch 55 is separated from the first switching mechanism 44, and thus the first switching mechanism 44 is turned off. Further, as shown in Fig. 14, the leading edge 77 of the rotating blade upper cover 75 fixed to the movable frame 42 will cover the cover member 80. The guiding shaft 91 is jacked up 'so that the rotating knife lower cover 85 of the cover member 80 is under Rotating (clockwise) to cover (close) the cutting portion of the rotary blade 34. Therefore, when the rotary blade 34 is positioned above, the rotary blade lower cover 85 covers the rotary blade 34, thereby preventing inadvertent contact with the rotary blade 34. If the positioning lever 65 is closed against the elasticity of the elastic member 67, the second switching mechanism 68 is turned on, and the locking pawl 66 is disengaged from one side of the rising lever 46, and the rising lever 43 can be used as the supporting shaft 60. The center rotates. As shown in Fig. 〇(a), if the rising rod 43 is rotated in the counterclockwise direction, the movable frame 42 is pushed down via the first support shaft 55, so that the rotating knife upper cover fixed to the movable frame 42 is Move to the lower side 'by the elastic member 92 to crimp the leading edge 77 of the rotating knife upper cover 75 156885. Doc 8 • 22- 201215728 The guide shaft 91 of the cover member 80 is also moved downward, as shown in Fig. 15, the rotating knife lower cover 85 of the cover member 80 is rotated upward (counterclockwise), thereby rotating The cut portion of the knife 34 is opened (opened). Further, when the lift lever 43 is rotated in the counterclockwise direction, the movable frame 42 is pushed down via the first support shaft 55 to open the rotary cutter lower cover 85. Therefore, the rotary blade 34 and the table surface 22a provided on the base portion 22 are provided. The fixed blade 38 on the needle plate 32 is in contact. In other words, the rotary blade 34 is moved to the cutting position P2 to be in a state where the cutting can be performed. At this time, the locking pawl 66 of the positioning lever 65 is locked to the locking recess 46a of the rising lever stopper 46, and the rotary blade 34 is positioned at the cutting position. 2. When the rotary blade 34 is positioned at the cutting position P2, as shown in FIG. 1c, the i-th shaft "contacts the first switching mechanism 44, so that the first switching mechanism 44 is turned on. Further, if the positioning lever 65 is closed, When the second switching mechanism 68 is turned on, when the positioning lever 65' is opened, the second switching mechanism 68 is turned off, and the mounting bracket 41 is provided with a rotation of the support shaft 35 that can abut against the movable frame 42 and support the rotary blade 34. a support screw 71 at a position (in the left-right direction). The support screw 71 adjusts the amount of protrusion of the front end 72 by the nut 73, and the front end 72, that is, the contact ball system abuts against the side plate 42a of the movable frame 42, restricts the movable frame 42 ( The rotary blade 34) is moved (swayed) in the axial direction (left-right direction) of the fixed shaft 41 with respect to the fixed shaft 41, thereby supporting the cutting position P2 of the rotary blade 34. As shown in Fig. 10(b), if it is rotated When the blade 34 is positioned at the non-cutting position, the sewing machine drive pedal 26 of FIG. 6 is operated, and the sewing machine 21 is driven by the sewing machine drive motor controller 24, so that the workpiece to be sewn (not shown) can be unaccompanied. Cutting the sewing operation of the work. The rotary cutter 34 is positioned at the non-cutting When the state of the position P1 is broken, the i-th switching mechanism 44 is turned off, and therefore, 156885. Doc •23· 201215728 The signal transmitted to relay 49 is cut off so that current does not flow into drive motor 37. Rotary knife 34 does not rotate. As shown in Fig. 10 (a), in the state where the rotary blade 34 is positioned at the cutting position P2, the sewing machine 21 is driven by the sewing machine drive motor controller 24 by operating the sewing machine to drive the pedal 26 as described above. The sewing operation is started on the sewn material not shown. Since the first switch mechanism 44 is turned on, the output is transmitted from the sewing machine drive motor controller 24 to the sewing machine drive output signal line 50 shown in Fig. 12 at the same time. At this time, as shown in Fig. 12, when the changeover switch 27 is switched to the signal line 5〇 side, the control key synchronized with the drive of the sewing machine 2 is supplied to the relay 49. Then, the driving voltage supplied from the power switch 25 to the adapter 48 via the circuit breaker 47 is converted to flow into the relay 49. On the other hand, the electric power supplied from the adapter 48 flows into the drive motor 37 by the sewing machine drive signal line 5 synchronized with the drive of the sewing machine 21, so that the drive motor 37 is rotationally driven in synchronization with the drive of the sewing machine 21. As shown in (4), the rotational force of the drive motor 37 is transmitted to the rotary blade 34 fixed to the rotary shaft 35 via the drive (4), whereby the rotary cutter rotates in synchronization with the drive of the slitting machine 2i, and The fixed knife π cooperatively sews the object to be sewn at the cutting point, and simultaneously cuts the object to be sewn. As described above, as shown in Fig. 10 (8), since the rotary blade 34 is in the state of being positioned at the non-cutting position P1, & and "If the positioning lever 65 is closed, the locking of the locking pawl 66 is released" second switching mechanism (10) Turn on. Here, the up lever 43 moves the movable frame 42 downward, and when the rotary blade 2 moves to == P2', the first support shaft 55 turns on the first switch mechanism 44, and the drive 7 is rotationally driven. As shown in Fig. 1 (4), the drive motor 37 is rotated 156885. Doc -24· 201215728 The rotation force is transmitted to the rotary blade 34 fixed to the rotary shaft 35 via the drive belt 36, so that the rotary cutter 34 is cut and sewn while being lowered. When the rotary blade 34 is raised by the operation of the raising lever 43, the first switching mechanism 44 is turned off to stop the rotation. In this manner, the cutting device 20 can rotationally drive the rotary blade 34 in association with the lowering of the rotary blade 34, so that the cutting device 20 can be cut from any position of the object to be sewn. On the other hand, when the switch 27 shown in Fig. 12 is switched to the side of the constant output signal line 51, when the rotary blade switch 28 is turned on regardless of whether or not the sewing machine 21 is driven, the rotation command signal flows to The drive motor 37 is driven by electric power supply to the drive motor 37 via the breaker 47 and the adapter 48. As a result, the rotary blade is rotated. At this time, the rotary blade 34 can be ground by bringing the grindstone into contact with the rotary blade 34 by the restoring force of the spring in the rotary blade polishing device 45. The present invention has been described above with reference to the embodiments of the present invention. However, the present invention is not limited to the above-described embodiments, and the recording can be performed within the scope of the technical idea of the present invention. For example, in the above embodiment, the transfer belt 36 is used. In order to drive (four) the material mechanism of the rotary cutter 34, but instead of the conveyor belt = use the gear row to drive. Alternatively, instead of the relay 49 shown in Fig. 12, the sequencer is used to control the drive motor 37. The workpiece cutting device 2G can set the cutting position of the rotary blade 34 in the vicinity of the sewing needle i. Therefore, the quality of the seamed product can be maintained, and the shape of the object to be sewn can be substantially simultaneously or independently of the sewing. Self-stitching the first line to: The workpiece is cut at an arbitrary position, so that the quality and productivity of the object to be sewn can be improved 1', and the object to be sewn is not required to be provided. Doc •25·201215728 The sewing machine with the sewn object cutting function can be provided by the existing sewing machine by adding the sewn object cutting device 20, so that the cost of the sewing machine body can be reduced. [Industrial Applicability] The present invention can be widely used as a workpiece cutting device that can be attached to a sewing machine and that cuts the object to be sewn substantially simultaneously with or independently of sewing. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a main part of a cloth cutting device of the prior art. Figure 2 is a perspective view of the main part of another prior cloth cutting device. Fig. 3 is a perspective view of a main portion of still another prior art cloth cutting device. Figure 4 is a perspective view of a main portion of still another prior art cloth cutting device. Figure 5 is a front elevational view of the cutting cutter drive mechanism of the prior cloth end cutting device. Fig. 6 is a front elevational view showing an embodiment of the sewing machine of the present invention. Figure 7 is a front elevational view of the handpiece of the sewing machine of Figure 6. Figure 8 is a right side view of the handpiece of Figure 7. Figure 9 is a left side view of the handpiece of Figure 7. Fig. 10 is an explanatory view of the workpiece cutting device according to the present invention, and Fig. 10 is a front view of the rotary knife positioned at the cutting position, and 圊1〇(b) is a rotary knife located at the non-cutting position (upward position). Fig. 11 is a rear view of the sewn material cutting device of Fig. 10. Fig. 1 is a block diagram showing the composition of the control device for the sewn material cutting device. Doc % 8 201215728 Fig. 13 is a perspective view of a main part of the sewn material cutting device. Fig. 14 is an explanatory view showing a state in which the workpiece cutting device of Fig. 13 is not cut. Fig. 15 is an explanatory view showing a state in which the workpiece cutting device of Fig. 13 is cut. [Main component symbol description] 1 pin 1 a notch 2 sewing frame 3 vertical hook 3a shuttle tip 4 sewing thread 4a coil 5 cloth end cutting device 5a movable cutter 5b fixed cutter 6 horizontal hook 6a shuttle tip 7 horizontal Hook 7a Shuttle tip 8 Horizontal hook 8a Shuttle tip 11 Upper shaft 12 Eccentric cam 13 Drive rod 14 Link 156885. Doc -27- Link cutter drive link cutting cutter cutting cutter (fixed side) Sewing material cutting device Sewing machine head Sewing machine body base 咅P Countertop sewing machine cutting control box Sewing machine drive motor controller power supply Switch Sewing Machine Drive Pedal Switch Switch Rotary Knife Switch Needle Rod Needle Presser Presser Pressing Plate Supply Plate on Supply Plate Needle Plate Supply Mechanism 8 -28- 201215728 34 Rotary Knife 35 Rotary Axis 36 Drive Belt (Power Transmission part) 37 Drive motor (drive mechanism) 38 Fixing blade 39a Fixing stay 39b Fixing stay 39c Fixing stay 40 Fixing stay 41 Motor mounting bracket 41a Side wall 41b Side wall 41c Upper guide groove 41d Lower guide groove 42 Active Rack 42a side plate 42b side plate 43 ascending rod (actuating mechanism) 43a recess 44 first switch mechanism 45 rotary knife grinding device 46 rising lever block (positioning mechanism) 46a locking recess 47 circuit breaker 156885. Doc . 29- Adapter relay sewing machine drive signal line constant output signal line positive signal line drive wheel guide wheel 1st shaft 2nd axis guide wheel tension wheel tension rod roller support shaft driven wheel link member positioning rod locking ratchet Claw elastic member 2nd switch mechanism Supporting floor support screw (support mechanism) Front end nut 8 -30- 201215728 75 Rotary knife upper cover 76 Connecting member 77 Leading edge 80 Cover member 81 Upper member 82 Intermediate member 83 Lower member 85 Rotation Knife lower cover 86 Bearing plate 87 Bearing piece 89 Support shaft 91 Guide shaft 92 Elastic member PI Non-cutting position P2 Cutting position 156885. Doc -31 ·