TW201510316A - Thread cutting device and thread cutting method for multi-thread chain stitch sewing machine - Google Patents
Thread cutting device and thread cutting method for multi-thread chain stitch sewing machine Download PDFInfo
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- TW201510316A TW201510316A TW103127207A TW103127207A TW201510316A TW 201510316 A TW201510316 A TW 201510316A TW 103127207 A TW103127207 A TW 103127207A TW 103127207 A TW103127207 A TW 103127207A TW 201510316 A TW201510316 A TW 201510316A
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
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- D05B65/00—Devices for severing the needle or lower thread
- D05B65/02—Devices for severing the needle or lower thread controlled by the sewing mechanisms
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Abstract
Description
本發明係關於一種雙環縫合縫紉機之切線裝置及切線方法，於例如拼縫縫紉機等之雙環縫合縫紉機之規定的縫製動作結束後，切斷於縫製布料的背面側突出之針線部及線鉤線部。 The present invention relates to a thread cutting device and a thread cutting method for a double-loop stitching sewing machine, which are cut off at a needle thread portion and a thread hook portion protruding from the back side of the sewing fabric after a predetermined sewing operation of a double loop sewing machine such as a seam sewing machine is completed. .
例如，以雙針雙環縫合縫紉機為例而進行說明，則如圖11(A)、(B)及圖12所示，該雙針雙環縫合縫紉機具備：左右之針1a、1b，其保持左右之針線NTa、NTb且相對於針板2而上下地往返運動；線鉤3，其能夠保持線鉤線LT而於與前述針1a、1b的上下往返運動路徑略正交之方向進行進退動作，且於進出動作時，捕捉由前述針1a、1b在針板2下形成之針線圈NTa'、NTb'；及切線裝置4，其能夠在靠近前述針板2及線鉤3之朝向左前方之進出位置P1、與較該進出位置P1更靠右後方之退避位置P2之間往返驅動移動，於規定的縫製動作結束後，即於縫合完成時，自前述退避位置P2移動至前述進出位置P1；利用前述線鉤3所保持之線鉤線LT，使前述針線圈NTa'、NTb'成圈，藉此，如圖13所示，於縫製布料W上形成規定長度的雙環縫合縫M。 For example, a double-needle double-loop sewing machine will be described as an example. As shown in FIGS. 11(A), (B) and 12, the double-needle double-loop sewing machine includes left and right needles 1a and 1b, which hold left and right. The needle threads NTa and NTb reciprocate up and down with respect to the needle plate 2, and the wire hook 3 can hold the wire hook line LT and advance and retreat in a direction slightly orthogonal to the vertical reciprocating path of the needles 1a and 1b, and During the in-out operation, the needle stitches NTa' and NTb' formed under the needle plate 2 by the needles 1a, 1b are captured; and the thread cutting device 4 is capable of coming in and out of the left-hand front of the needle plate 2 and the wire hook 3; The position P1 and the retracted position P2 located further to the right rear side than the entry and exit position P1 are reciprocally driven to move, and after the predetermined sewing operation is completed, that is, when the suturing is completed, the retracted position P2 is moved to the inward and outward position P1; The thread hook line LT held by the wire hook 3 loops the needle stitches NTa' and NTb', whereby a double-loop stitching M of a predetermined length is formed on the sewing fabric W as shown in FIG.
前述切線裝置4於在縫製布料W上形成規定長度的雙環縫合縫M之縫合完成時，如圖13所示，切斷於縫製布料W的背面側突出之 針線部NTa1、NTb1及線鉤線部LT1，該切線裝置4具有：可動切刀5；固定切刀6；平板彈簧製的線鉤線夾持構件7，其配置於前述可動切刀5的下部，且於與可動切刀5之間彈性地夾持已切斷之線鉤線部LT的端部；及線夾持輔助彈簧8，其用於調整該線鉤線夾持構件7的夾持力。而且，具備往返驅動移動機構9，其使包含前述可動切刀5、固定切刀6、線鉤線夾持構件7及線夾持輔助彈簧8之切線裝置4在前述退避位置P2與前述進出位置P1之間往返驅動移動，並且於切線裝置4移動至前述進出位置P1為止之後，僅使可動切刀5在落針位置的靠一側之外部位置(進出位置)與落針位置的靠另一側之外部位置之間往返驅動移動。 When the sewing of the double-loop suture M having a predetermined length on the sewing fabric W is completed, as shown in FIG. 13, the cutting device 4 is cut to protrude from the back side of the sewing fabric W. The thread cutting portions NTa1, NTb1 and the wire hooking portion LT1 having the movable cutter 5, the fixed cutter 6, and the flat hook spring-clamping member 7 disposed in the lower portion of the movable cutter 5 And elastically clamping the end of the cut wire hook portion LT between the movable cutter 5; and a wire clamping assist spring 8 for adjusting the clamping of the wire hook wire clamping member 7 force. Further, the reciprocating drive mechanism 9 is provided, and the tangential device 4 including the movable cutter 5, the fixed cutter 6, the wire hook wire holding member 7, and the wire holding assist spring 8 is at the retracted position P2 and the aforementioned entry and exit position. The movement between the P1 is reciprocated, and after the tangential device 4 has moved to the aforementioned entry and exit position P1, only the outer position (in and out position) of the movable cutter 5 on the side of the needle drop position and the needle drop position are placed on the other side. The reciprocating drive moves between the outer positions of the sides.
再者，前述往返驅動移動機構9的構成與後述之本發明之實施形態中的往返驅動移動機構相同，因此，對於相對應之構成構件標記與本發明之實施形態中的往返驅動移動機構相同的符號。 Further, the configuration of the shuttle drive mechanism 9 is the same as that of the shuttle drive mechanism in the embodiment of the present invention to be described later. Therefore, the corresponding component member mark is the same as the shuttle drive mechanism in the embodiment of the present invention. symbol.
作為具有如上所述之基本構成之雙環縫合縫紉機之切線裝置4，先前已知有日本實公平6-32072號公報所揭示之構成之切線裝置。該習知之雙環縫合縫紉機之切線裝置4如圖11(A)、(B)及圖12所示，於可動切刀5前端的側緣部形成有線鉤線捕捉部10，其於該可動切刀5自前述落針位置的靠另一側之外部位置向靠一側之外部位置返行驅動移動時，鉤掛捕捉於前述縫製布料W的背面側突出之線鉤線部LT1，並且於較該線鉤線捕捉部10更靠前述可動切刀5的基端之側緣部形成有針線捕捉部11，其於該可動切刀5自前述落針位置的靠另一側之外部位置向靠一側之外部位置返行驅動移動時，依序鉤掛捕捉於前述縫製布料W的背面側突出之左 右之針線部NTa1、NTb1。 As a tangential device 4 of the double-loop stitching sewing machine having the basic configuration as described above, a tangential device having the configuration disclosed in Japanese Patent Publication No. Hei 6-32072 is known. As shown in Figs. 11(A), (B) and 12, the thread cutting device 4 of the conventional double-loop sewing machine has a wire hook catching portion 10 formed at a side edge portion of the front end of the movable cutter 5, and the movable cutter is used for the movable cutter. 5, when returning from the outer position of the other side of the needle drop position to the outer position of the one side, the hook line portion LT1 that protrudes on the back side of the sewing cloth W is hooked, and The thread hook catching portion 10 is further provided with a needle thread catching portion 11 at a side edge portion of the proximal end of the movable cutter 5, and the movable cutter 5 is placed at an outer position from the other side of the needle drop position. When the external position of the side is driven by the return drive, the hook is sequentially caught and caught on the back side of the sewing fabric W. Right needle thread portions NTa1, NTb1.
其次，對上述習知之雙環縫合縫紉機的切線裝置4之切線動作進行說明。 Next, the tangential operation of the thread cutting device 4 of the above-described conventional double loop sewing machine will be described.
首先，如圖12(a)所示，於縫合完成時，在切線裝置4移動至落針位置的靠一側之外部位置即進出位置P1為止後，如圖12(b)所示，僅可動切刀5自前述進出位置P1向落針位置的靠另一側之外部位置，朝箭頭x方向往行驅動移動。藉由該往行驅動移動，如圖12(c)所示，可動切刀5前端側的線鉤線捕捉部10越過架在線鉤3的前端附近與縫製布料W的背面側之間的線鉤線部LT1後，可動切刀5的移動方向立即反轉，由前述線鉤線捕捉部10鉤掛捕捉線鉤線部LT1。繼而，如圖12(d)所示，可動切刀5自前述落針位置的靠另一側之外部位置向前述進出位置P1，朝箭頭y方向返行驅動移動，於該返行驅動移動時，於縫製布料W的背面側突出之左右之針線部NTa1、NTb1被針線捕捉部11鉤掛捕捉。接著，可動切刀5進一步向箭頭y方向返行驅動移動，藉此，如圖12(e)所示，前述針線捕捉部11所捕捉之針線部NTa1、NTb1及線鉤線捕捉部10所捕捉之線鉤線部LT1因各捕捉部11、10與固定切刀6之滑動接觸而被切斷。其後，如圖12(f)所示，針1a、1b向針板2的上方移動，並且保持於線鉤3之線鉤線LT的端部彈性地夾持於可動切刀5與線鉤線夾持構件7之間，以準備下一次縫製。 First, as shown in Fig. 12 (a), when the thread cutting device 4 is moved to the outer position of the needle drop position, that is, the entry and exit position P1, as shown in Fig. 12 (b), only the movable portion 4 is movable. The cutter 5 is driven to move in the direction of the arrow x from the aforementioned entry/exit position P1 to the outer position on the other side of the needle drop position. As shown in FIG. 12(c), the line hook line catching portion 10 on the distal end side of the movable cutter 5 passes over the line hook between the vicinity of the front end of the wire hook 3 and the back side of the sewing fabric W. Immediately after the line portion LT1, the moving direction of the movable cutter 5 is reversed, and the line hook line catching portion 10 hooks the catching line hook portion LT1. Then, as shown in FIG. 12(d), the movable cutter 5 is driven to move in the direction of the arrow y from the outer position on the other side of the needle drop position to the entrance and exit position P1, and the movement is driven by the return drive. The left and right needle thread portions NTa1 and NTb1 protruding from the back side of the sewing fabric W are caught by the needle thread catching portion 11. Then, the movable cutter 5 is further driven to move in the direction of the arrow y, whereby the needle thread portions NTa1, NTb1 and the thread hook line capturing portion 10 captured by the needle thread catching portion 11 are captured as shown in Fig. 12(e). The wire hooking portion LT1 is cut by sliding contact between the respective catching portions 11 and 10 and the fixed cutter 6. Thereafter, as shown in Fig. 12 (f), the needles 1a, 1b are moved upward of the needle plate 2, and the ends of the hook lines LT held by the hooks 3 are elastically clamped to the movable cutter 5 and the thread hooks. Between the wire clamping members 7, to prepare for the next sewing.
具有如上所述之構成且進行如上所述之切線動作之日本實公平6-32072號公報所揭示之習知之雙環縫合縫紉機的切線裝置在縫合完成時，能夠藉由可動切刀5與固定切刀6之滑動接觸，自動地切斷於縫製布 料W的背面側突出之針線部NTa1、NTb1及線鉤線部LT1，並且能夠以不使上述各線剩餘長度存在偏差之方式，將上述針線部NTa1、NTb1及線鉤線部LT1切斷為大致平均化之長度。 The tangential device of the conventional double-loop sewing machine disclosed in Japanese Laid-Open Patent Publication No. Hei 6-32072, which has the above-described configuration and which performs the tangential operation as described above, can be used with the movable cutter 5 and the fixed cutter when the sewing is completed. 6 sliding contact, automatically cut off the sewing cloth The needle thread portions NTa1 and NTb1 and the wire hooking portion LT1 protruding from the back side of the material W can be cut into the needle thread portions NTa1 and NTb1 and the wire hooking portion LT1 so as not to vary the remaining length of each of the wires. The length of the average.
然而，於習知之切線裝置4之情形時，針線部NTa1、NTb1及線鉤線部LT1的切斷位置為以不進入至針1a、1b的上下往返運動路徑內之方式而離開落針位置之位置，即較右針1b更靠右側之外部位置，因此，如圖13所示，於切斷後，自縫製布料W背面側的左右之針線部NTa1、NTb1及線鉤線部LT1的縫合完成部分算起之線剩餘長度變長。 However, in the case of the conventional tangential device 4, the cutting positions of the needle thread portions NTa1, NTb1 and the wire hooking portion LT1 are separated from the needle drop position so as not to enter the vertical reciprocating path of the needles 1a, 1b. The position is the outer position on the right side of the right needle 1b. Therefore, as shown in Fig. 13, after the cutting, the stitching completion portions of the left and right needle thread portions NTa1, NTb1 and the thread hook line portion LT1 on the back side of the sewing fabric W are cut. The remaining length of the calculated line becomes longer.
又，對於上述習知之切線裝置，認為為了縮短針線部NTa1、NTb1及線鉤線部LT1之切斷後的線剩餘長度，使利用可動切刀5與固定切刀6之滑動接觸而進行切斷之位置盡可能地靠近落針位置。然而，即便於該情形時，仍鉤掛捕捉針線部NTa1、NTb1而使其移動至固定切刀6所處之切斷位置為止，將針線部NTa1、NTb1切斷，因此，於使針線部NTa1、NTb1的線剩餘長度縮短之方面自然有限度。尤其，左側的針線部NTa1的線剩餘長度較右側的針線部NTb1的線剩餘長度變長之程度僅左右之針1a、1b的間距。因此，以往之實際情形並非是使切斷位置盡可能地靠近落針位置，而是如圖5(B)所示，將固定切刀6的前端刃緣部與右針1b的上下運動路徑之間隔開了充分的距離d1之位置設定為切斷位置，藉此，使各線成為適合於利用後述之剪刀等切斷之線剩餘長度。 Further, in the above-described conventional thread cutting device, it is considered that the remaining length of the thread after the cutting of the needle thread portions NTa1, NTb1 and the hook line portion LT1 is shortened, and the movable cutter 5 is brought into sliding contact with the fixed cutter 6 to be cut. Position as close as possible to the needle drop position. However, even in this case, the catching needle portions NTa1 and NTb1 are hooked and moved to the cutting position where the fixed cutter 6 is placed, and the needle thread portions NTa1 and NTb1 are cut. Therefore, the needle thread portion NTa1 is cut. The length of the remaining length of the line of NTb1 is naturally limited. In particular, the remaining line length of the left needle thread portion NTa1 is longer than the line remaining length of the right needle thread portion NTb1 by only the pitch of the left and right needles 1a and 1b. Therefore, in the past, the actual situation is not that the cutting position is as close as possible to the needle drop position, but as shown in Fig. 5(B), the front end edge portion of the fixed cutter 6 and the up and down movement path of the right needle 1b are fixed. The position at which the sufficient distance d1 is spaced apart is set as the cutting position, whereby the respective lines are made to have a remaining length suitable for cutting by scissors or the like which will be described later.
如此，則於縫合完成時，會在縫製布料W的背面側殘留較長之針線部NTa1、NTb1及線鉤線部LT1，縫合完成之縫製物的美觀程度不佳。因此，於縫合完成後，進行手工作業例如使用剪刀等，以使線剩餘長 度變短之方式切斷縫製布料W的背面側的各線部，但於該情形時存在如下問題：不僅每當一個縫製物之縫合完成時，需要進行用以切斷線之煩雜的手工作業，導致縫製作業效率降低，而且因剪刀等而損傷縫製布料W之可能性高。 In this way, when the stitching is completed, the long stitch portions NTa1, NTb1 and the thread hook portion LT1 remain on the back side of the sewing fabric W, and the stitched finished product is not aesthetically pleasing. Therefore, after the suturing is completed, manual work such as using scissors or the like is performed to make the line remaining long. When the degree is shortened, the respective line portions on the back side of the sewing fabric W are cut. However, in this case, there is a problem in that not only the sewing of one sewing material is completed, but also the complicated manual work for cutting the thread is required. The sewing work efficiency is lowered, and the possibility of damaging the sewing fabric W due to scissors or the like is high.
本發明係鑒於上述實際情況而成之發明，其目的在於提供如下雙環縫合縫紉機之切線裝置及切線方法，於縫合完成時，能夠自動地將縫製布料的背面側的針線部及線鉤線部切斷為平均化之長度，而且即便不進行導致作業效率降低之煩雜的手工作業，亦能夠縮短線之剩餘長度，從而提高縫合完成之縫製物的美觀程度。 The present invention has been made in view of the above-described actual circumstances, and an object of the invention is to provide a thread cutting device and a tangential cutting method for a double loop sewing machine which can automatically cut a needle thread portion and a thread hook portion on the back side of a sewing fabric when the stitching is completed. The length of the averaging is broken, and the remaining length of the thread can be shortened even if the complicated manual work that causes the work efficiency to be lowered is not performed, thereby improving the aesthetic appearance of the stitched finished stitch.
為了實現上述目的，本發明之雙環縫合縫紉機之切線裝置具備：針，其保持針線且上下地往返運動；線鉤，其能夠保持線鉤線而於與上述針的上下往返運動路徑略正交之方向進行進退動作，且於進出動作時，捕捉由上述針於針板下形成之針線圈；及線切斷用之可動切刀，其能夠在上述針板上的落針位置的靠一側之外部位置、及與上述落針位置的上述靠一側之外部位置相反的靠另一側之外部位置之間往返驅動移動，於利用上述線鉤所保持之線鉤線使上述針線圈成圈，且於縫製布料上形成雙環縫合縫之規定的縫製動作結束後，切斷於上述縫製布料的背面側突出之針線部及線鉤線；其特徵在於：於上述可動切刀上形成有刃部，其由該可動切刀自上述落針位置的靠一側之外部位置向上述靠另一側之外部位置往行驅動移動時，於上述落針位置或落針位置附近鍘切切斷於上述縫製布料的背面側突出之針線部；並且形成有線鉤線捕捉部，其由該可動切刀自上述 落針位置的靠另一側之外部位置向上述靠一側之外部位置返行驅動移動時，鉤掛捕捉於上述縫製布料的背面側突出之線鉤線部；上述雙環縫合縫紉機之切線裝置具備：固定切刀，其於較上述落針位置的靠一側之外部位置更靠另一側之位置，藉由與上述線鉤線捕捉部之間的滑動接觸而切斷該線鉤線捕捉部所捕捉之上述線鉤線部；及線鉤線夾持構件，其配置於上述可動切刀的下部，且於與上述可動切刀之間彈性地夾持因上述線鉤線捕捉部與上述固定切刀之滑動接觸而被切斷之線鉤線的端部；上述固定切刀及線鉤線夾持構件係以如下方式構成：各自的前端部於不進入至上述針的上下往返運動路徑內之範圍內，位於最接近上述落針位置之位置。 In order to achieve the above object, a thread cutting device for a double loop sewing machine of the present invention includes: a needle that holds a needle thread and reciprocates up and down; and a thread hook that can hold a thread hook line and is slightly orthogonal to a path of up and down reciprocating motion with the needle The direction advances and retreats, and during the movement, the needle coil formed by the needle under the needle plate is captured; and the movable cutter for thread cutting can be placed on one side of the needle drop position on the needle plate An external position and a reciprocating driving movement between the outer position on the other side opposite to the outer position of the needle drop position, and the stitching of the needle is looped by the hook line held by the hook And after the sewing operation for forming the double loop stitching on the sewing fabric is completed, the needle thread portion and the thread hook line protruding on the back side of the sewing cloth are cut, and a blade portion is formed on the movable cutter. When the movable cutter is driven to move from the outer position on the one side of the needle drop position to the outer position on the other side, in the vicinity of the needle drop position or the needle drop position Earnestly off the back surface to the fabric sewn thread portion of the projection side; and forming a cable hook-line capture unit, consisting of the moving knife from above When the outer position of the other side of the needle drop position is driven to move toward the outer position on the one side, the thread hooking portion that protrudes on the back side of the sewing fabric is hooked; the thread cutting device of the double loop sewing machine has a fixed cutter that cuts the line hook line capturing portion by sliding contact with the line hook line catching portion at a position closer to the other side than the outer side position of the needle drop position And the wire hook wire clamping member is disposed at a lower portion of the movable cutter, and is elastically sandwiched between the movable cutter and the wire hook catching portion and the fixing An end portion of the wire hook line that is cut by the sliding contact of the cutter; the fixed cutter and the wire hook wire clamping member are configured such that the respective front end portions do not enter the upper and lower reciprocating path of the needle Within the range, it is located closest to the above-mentioned needle drop position.
又，本發明之雙環縫合縫紉機之切線方法係如下雙環縫合縫紉機之切線方法，其具備：針，其保持針線且上下地往返運動；線鉤，其能夠保持線鉤線而沿著與上述針的上下往返運動路徑略正交之方向進行進退動作，且於進出動作時，捕捉由上述針於針板下形成之針線圈；及可動切刀，其能夠在上述針板上的落針位置的靠一側之外部位置、及與上述落針位置的上述靠一側之外部位置相反的靠另一側之外部位置之間往返驅動移動；其特徵在於：於利用上述線鉤所保持之線鉤線使上述針線圈成圈，且於縫製布料上形成雙環縫合縫之規定的縫製動作結束後，當上述可動切刀自上述落針位置的靠一側之外部位置向上述靠另一側之外部位置往行驅動移動時，將形成於上述可動切刀之刃部推碰至在上述縫製布料的背面側突出之針線部，於落針位置或落針位置附近鍘切切斷上述針線部；並且當上述可動切刀自上述落針位置的靠另一側之外部位置向上述靠一側之外部位置返行驅動移動時，藉由形成於上述可動切刀之線鉤線捕捉部，鉤掛捕 捉於上述縫製布料的背面側突出之線鉤線部，當上述可動切刀向上述靠一側之外部位置返行驅動移動時，藉由固定切刀與上述線鉤線捕捉部之滑動接觸而切斷該已捕捉之線鉤線部，上述固定切刀係以如下方式構成：於較上述靠一側之外部位置更靠另一側之位置，前端部於不進入至上述針的上下往返運動路徑內之範圍內，位於最接近上述落針位置之位置；並且，被切斷之線鉤線的端部彈性地夾持於上述可動切刀與配置於該可動切刀下部之線鉤線夾持構件之間。 Moreover, the tangential method of the double loop stitching sewing machine of the present invention is a tangential cutting method of a double loop stitching sewing machine, comprising: a needle that holds a needle thread and reciprocates up and down; and a thread hook that can hold the thread hook line along the needle The up-and-down reciprocating motion path advances and retreats in a direction orthogonal to the orthogonal direction, and captures a needle coil formed by the needle under the needle plate during the entering and exiting motion; and a movable cutter capable of resting on the needle drop position on the needle plate An outer position of one side and a reciprocating driving movement between the outer position of the other side opposite to the outer position of the needle drop position; and the line hook line held by the hook After the sewing of the needle coil is completed and the predetermined sewing operation for forming the double loop stitching on the sewing fabric is completed, the movable cutter is moved from the outer position on the side of the needle drop position to the outer position on the other side. When the row is driven to move, the blade portion formed on the movable cutter is pushed to the needle thread portion protruding on the back side of the sewing cloth, and is located near the needle drop position or the needle drop position. Cutting and cutting the needle thread portion; and when the movable cutter is driven to move from the outer position on the other side of the needle drop position to the outer position on the one side, the thread hook line formed on the movable cutter Capture department a wire hooking portion that protrudes from the back side of the sewing cloth, and when the movable cutter is driven to move toward the outer side of the one side, the fixed cutter is in sliding contact with the wire hook catching portion. Cutting the caught wire hook portion, the fixed cutter is configured to be positioned on the other side of the outer side of the one side, and the front end portion does not enter the upper and lower reciprocating motion of the needle Within the range of the path, located at the position closest to the needle drop position; and the end portion of the cut line hook wire is elastically clamped between the movable cutter and the wire hook clamp disposed at the lower portion of the movable cutter Hold between components.
根據具有如上所述之特徴之本發明之雙環縫合縫紉機之切線裝置及切線方法，於規定的縫製動作後(縫合完成後)，在將固定切刀配置固定於較落針位置的靠一側之外部位置更靠另一側之位置的狀態下，使可動切刀自落針位置的靠一側之外部位置向前述靠另一側之外部位置往行驅動移動，藉此，能夠將該可動切刀的刃部退碰至在縫製布料的背面側上突出之針線部，於落針位置或落針位置附近鍘切切斷該針線部，針線部成為自縫製布料的背面至可動切刀的刃部的通過位置為止之長度，從而能夠縮短縫製布料的背面之針線部的剩餘長度。 According to the tangential device and the tangential method of the double loop sewing machine of the present invention having the above-described features, after the predetermined sewing operation (after the sewing is completed), the fixed cutter is fixed to the side of the needle drop position. In a state where the outer position is further on the other side, the movable cutter is driven to move from the outer position on the one side of the needle drop position to the outer position on the other side, whereby the movable cutter can be moved The blade portion is returned to the needle thread portion protruding on the back side of the sewing fabric, and the needle thread portion is cut and cut at the needle drop position or the needle drop position, and the needle thread portion is formed from the back surface of the sewing fabric to the blade portion of the movable cutter. By the length of the position, the remaining length of the needle thread portion on the back side of the sewing fabric can be shortened.
另一方面，當可動切刀自落針位置的靠另一側之外部位置向靠一側之外部位置返行驅動移動時，於縫製布料的背面側突出之線鉤線部被線鉤線捕捉部鉤掛捕捉後，能夠藉由固定切刀與線鉤線捕捉部之滑動接觸而切斷該線鉤線部，該固定切刀係以如下方式構成：於較前述靠一側之外部位置更靠另一側之位置，前端部(刃部的前端緣)於不進入至針的上下往返運動路徑內之範圍內，位於最接近落針位置之位置，線鉤線部成為自縫製布料的背面至固定切刀與線鉤線捕捉部之滑動接觸切斷位置為止之 長度，從而亦能夠盡可能縮短縫製布料的背面之線鉤線部的剩餘長度。 On the other hand, when the movable cutter is driven to move backward from the outer position on the other side from the other side of the needle drop position, the thread hook line portion protruding on the back side of the sewing fabric is caught by the thread hook line. After the hooking is captured, the wire hook portion can be cut by the sliding contact of the fixed cutter with the wire hook catching portion, and the fixed cutter is configured to be closer to the outer side than the one side On the other side, the front end portion (the front end edge of the blade portion) is located at the position closest to the needle drop position within a range that does not enter the upper and lower reciprocating path of the needle, and the line hook portion becomes the back surface of the self-sewing cloth to The fixed cutter and the hook line catching portion are in sliding contact with the cutting position The length, and thus the remaining length of the thread hook portion of the back side of the sewing fabric, can be shortened as much as possible.
因此，於縫合完成時，無需煩雜的手工作業例如使用剪刀等，以使線剩餘長度縮短之方式切斷縫製布料的背面側的各線部，會產生如下效果：不僅能夠提高縫製作業效率，而且能夠提高縫合完成之縫製物的美觀程度而無因剪刀等損傷縫製布料之虞。 Therefore, when the sewing is completed, it is possible to cut the respective line portions on the back side of the sewing fabric so that the remaining length of the thread is shortened without complicated work, for example, using scissors, etc., and it is possible to improve not only the sewing work efficiency but also the sewing work efficiency. The aesthetics of the sewn finished stitch is improved without any damage to the fabric by scissors or the like.
於本發明之雙環縫合縫紉機之切線裝置中，較佳為上述可動切刀的針線切斷用刃部係以使該刃部的前端緣位於可動切刀的板厚方向的上表面側之方式而形成。此時，與以使刃部的前端緣位於可動切刀的板厚方向的下表面側之方式而形成上述可動切刀的針線切斷用刃部之情形相比較，能夠以可動切刀的略板厚之量，進一步縮短由可動切刀的刃部鍘切切斷之針線部的線剩餘長度。 In the thread cutting device of the double-loop sewing machine of the present invention, it is preferable that the needle cutting blade portion of the movable cutter is such that the front end edge of the blade portion is located on the upper surface side in the thickness direction of the movable cutter. form. In this case, the movable cutter can be slightly compared with the case where the cutting edge portion of the movable cutter is formed so that the front end edge of the blade portion is located on the lower surface side in the thickness direction of the movable cutter. The amount of the plate thickness further shortens the remaining length of the thread of the needle thread portion cut by the blade portion of the movable cutter.
又，於本發明之雙環縫合縫紉機之切線裝置及切線方法中，較佳為於藉由上述可動切刀而鍘切切斷針線部時，藉由針線按壓裝置將針線按壓保持於針板的上方部。於該情形下，當將針線部推碰至可動切刀的刃部而將該針線部鍘切切斷時，能夠對針線賦予一定之張力且維持該張力，因此，能夠於落針位置或落針位置附近，確實且鋒利地切斷針線部。 Further, in the tangential device and the tangential method of the double-loop stitching sewing machine according to the present invention, it is preferable that the needle thread pressing device presses the needle thread to the upper portion of the needle plate when the needle thread portion is cut and cut by the movable cutter. . In this case, when the needle thread portion is pushed to the blade portion of the movable cutter and the needle thread portion is cut and cut, the needle thread can be given a certain tension and the tension can be maintained. Therefore, the needle drop position or the needle drop can be achieved. Near the position, the needle thread is cut off sharply and sharply.
又，於本發明之雙環縫合縫紉機之切線裝置及切線方法中，較佳為控制規定的縫製動作完成前的至少一針之縫製動作時的縫製布料的輸送量，使該輸送量小於此前之縫製動作時的縫製布料的輸送量。於該情形時，最後的縫合縫的針線部之位置向布料輸送方向與針的上下運動路徑相隔之隔距小於通常的輸送量之情形下之隔距，該最後的縫合縫的針線部連接於縫製布料的背面且於針板的下表面突出，因此，即便未增大可動切 刀的刃部的長度，對於較短的刃部而言，仍能夠確實地將該刃部推碰至各針線部，從而鍘斷各針線部。 Moreover, in the thread cutting device and the tangential cutting method of the double loop sewing machine of the present invention, it is preferable to control the conveying amount of the sewing fabric at the time of the sewing operation of at least one stitch before the completion of the predetermined sewing operation, so that the conveying amount is smaller than the previous sewing. The amount of sewing cloth that is transported during operation. In this case, the position of the needle thread portion of the last seam is spaced apart from the upper and lower movement path of the needle by a distance smaller than the normal conveyance amount, and the needle thread portion of the last seam is connected to Sewing the back of the fabric and protruding on the lower surface of the needle plate, so even if it is not enlarged, it can be moved The length of the blade portion of the blade can surely push the blade portion to each of the needle thread portions for the short blade portion, thereby breaking the needle thread portions.
進而，於本發明之雙環縫合縫紉機之切線裝置中，較佳為，上述針於與縫製進行方向正交之方向而並排設置有複數根，上述固定切刀配置於如下位置，該位置最大限度地接近於複數根針中的最接近上述落針位置的靠一側之外部位置之針。 Further, in the thread cutting device of the double loop sewing machine of the present invention, it is preferable that the needles are arranged in parallel in a direction orthogonal to the direction in which the sewing is performed, and the fixed cutter is disposed at a position that maximizes A needle that is close to the outer position of one side of the plurality of needles that is closest to the needle drop position.
1a、1b‧‧‧針 1a, 1b‧‧ needle
2‧‧‧針板 2‧‧‧ needle board
3‧‧‧線鉤 3‧‧‧ line hook
4‧‧‧切線裝置 4‧‧‧Thread cutting device
5‧‧‧可動切刀 5‧‧‧ movable cutter
5e‧‧‧刃部 5e‧‧‧blade
6‧‧‧固定切刀 6‧‧‧Fixed cutter
6e‧‧‧刃緣部 6e‧‧‧Edge
7‧‧‧線鉤線夾持構件 7‧‧‧Line hook wire clamping member
10‧‧‧線鉤線捕捉部 10‧‧‧Line hook line capture department
50‧‧‧針線按壓裝置 50‧‧‧Needle pressing device
NTa、NTb‧‧‧針線 NTa, NTb‧‧ needles
NTa1、NTb1‧‧‧突出且被切斷之針線部 NTa1, NTb1‧‧‧ protruding and severed needlework
LT‧‧‧鉤線 LT‧‧‧ hook line
LT1‧‧‧突出且被切斷之線鉤線部 LT1‧‧‧ protruding and cut line hook line
W‧‧‧縫製布料 W‧‧‧Sewing fabric
M‧‧‧雙環縫合縫 M‧‧‧ Double loop stitching
圖1係本發明之實施形態之雙環縫合縫紉機整體的外觀立體圖。 Fig. 1 is a perspective view showing the overall appearance of a double loop sewing machine according to an embodiment of the present invention.
圖2係說明上述雙環縫合縫紉機的切線裝置中的往返驅動移動機構的構成之分解立體圖。 Fig. 2 is an exploded perspective view showing the configuration of a reciprocating drive moving mechanism in the thread cutting device of the double loop sewing machine.
圖3表示藉由上述往返驅動移動機構使切線裝置後退至退避位置之狀態，(A)為主要部分之俯視圖，(B)為沿著圖2(A)的A-A線之縱剖面圖。 Fig. 3 shows a state in which the tangential device is moved back to the retracted position by the reciprocating drive moving mechanism, (A) is a plan view of a main portion, and (B) is a longitudinal cross-sectional view taken along line A-A of Fig. 2(A).
圖4表示藉由上述往返驅動移動機構使切線裝置進出於進出位置，且可動切刀往行驅動移動至最左方為止之狀態，(A)為主要部分之俯視圖，(B)為沿著圖3(A)的B-B線之縱剖面圖。 4 is a view showing a state in which the tangential device is moved in and out of the position by the reciprocating drive moving mechanism, and the movable cutter is driven to the leftmost position, (A) is a plan view of the main portion, and (B) is a view along the figure. 3 (A) longitudinal section of the BB line.
圖5為說明本實施形態之情形下與習知情形下的切線裝置中的固定刃及線鉤線夾持構件的前端與右針的上下運動路徑之位置關係之詳情的比較圖，(A)為本實施形態之情形，(B)為習知之情形。 Fig. 5 is a view for explaining a comparison of the positional relationship between the front end of the fixed blade and the hook line holding member and the vertical movement path of the right needle in the tangential device in the case of the present embodiment, (A) In the case of this embodiment, (B) is a conventional case.
圖6係切線裝置中的可動切刀之放大俯視圖。 Figure 6 is an enlarged plan view of the movable cutter in the tangential device.
圖7(a)~(f)係依序對切線裝置的切線動作進行說明之主要部分立體圖。 7(a) to 7(f) are principal part perspective views for explaining the tangential operation of the tangential device in order.
圖8係自縫製布料的背面側觀察縫合完成及線切斷後之縫合縫構造之圖。 Fig. 8 is a view showing the stitching structure after completion of stitching and thread cutting from the back side of the sewn fabric.
圖9係自縫製布料的背面側觀察藉由其他實施形態之雙環縫合縫紉機形成之縫合縫構造之圖。 Fig. 9 is a view showing a structure of a seam formed by a double loop stitching sewing machine of another embodiment from the back side of the sewn fabric.
圖10係應用於如圖9所示之縫合縫構造時的切線裝置中的可動切刀之放大俯視圖。 Fig. 10 is an enlarged plan view of the movable cutter in the tangential device applied to the suture seam structure shown in Fig. 9.
圖11係表示習知之雙環縫合縫紉機的切線裝置整體進出於進出位置之狀態，(A)為主要部分的俯視圖，(B)為沿著圖11(A)的C-C線之縱剖面圖。 Fig. 11 is a plan view showing a state in which the tangential device of the conventional double-loop stitching sewing machine is entirely moved in and out, (A) is a plan view of a main portion, and (B) is a longitudinal sectional view taken along line C-C of Fig. 11(A).
圖12(a)~(f)係依序對習知之切線裝置的切線動作進行說明之主要部分立體圖。 12(a) to (f) are main part perspective views for explaining the tangential operation of the conventional tangential device.
圖13係自縫製布料的背面側觀察藉由習知之雙環縫合縫紉機的切線裝置形成之縫合完成及線切斷後之縫合縫構造之圖。 Fig. 13 is a view showing the completion of the stitching by the tangential device of the conventional double-loop stitching sewing machine and the stitching structure after the thread cutting, from the back side of the sewn fabric.
以下，基於圖式說明本發明之實施形態。再者，於本實施形態中，對與習知之雙環縫合縫紉機相同的構成要素標記相同符號而進行說明。 Hereinafter, embodiments of the present invention will be described based on the drawings. In the present embodiment, the same components as those of the conventional double-loop stitching sewing machine will be denoted by the same reference numerals and will be described.
圖1係本發明之雙針雙環縫合縫紉機整體的外觀立體圖。該雙針雙環縫合縫紉機中，縫紉機臂部21與縫紉機梭床22自縫紉機本體20的上部及下部向左側方，彼此略平行地延伸設置。於縫紉機臂部21的內部，裝入有縫紉機主軸、使左右的針1a、1b上下往返運動之針驅動機構、使壓布腳23上下往返運動之壓布腳驅動機構或向上述各驅動機構傳遞動力之動 力傳遞機構等，但由於該等驅動機構與動力傳遞機構已眾所周知，故而省略說明。 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing the overall appearance of a double needle double loop sewing machine of the present invention. In the double needle double loop sewing machine, the sewing machine arm portion 21 and the sewing machine shuttle 22 are extended from the upper portion and the lower portion of the sewing machine body 20 to the left side, and extend in parallel with each other. Inside the sewing machine arm portion 21, a sewing machine main shaft, a needle driving mechanism for reciprocating the left and right needles 1a and 1b, and a pressing device driving mechanism for reciprocating the pressing foot 23 up and down or to the respective driving mechanisms are incorporated. Dynamic movement Force transmission mechanism or the like, but since these drive mechanisms and power transmission mechanisms are well known, description thereof will be omitted.
於縫紉機梭床22的上表面部，固定有具有形成落針位置之落針槽部之針板2，於該針板2的下方部的縫紉機梭床22內，裝入有線鉤3、切線裝置4及往返驅動移動機構9等，該線鉤3保持線鉤線LT且沿著與前述針1a、1b的上下往返運動路徑略正交之左右方向進行進退動作，該往返驅動移動機構9使該切線裝置4的固定切刀6的刃緣部6e在如圖4(A)、(B)所示之朝向左前方之進出位置P1、與如圖3(A)、(B)所示之較前述進出位置P1更靠右後方之退避位置P2之間往返驅動移動，並且於切線裝置4已移動至前述進出位置P1之狀態下，僅使後述之可動切刀5在落針位置的靠一側(右側)之外部位置與靠另一側(左側)之外部位置之間，沿著x-y方向呈直線地往返驅動移動，上述朝向左前方之進出位置P1係靠近前述針板2及線鉤3之位置，且係後述之抵接構件34抵接於後述之擋止構件33時之位置。 A needle plate 2 having a needle drop groove portion for forming a needle drop position is fixed to an upper surface portion of the sewing machine shuttle 22, and a wire hook 3 and a thread cutting device are incorporated in the sewing machine shuttle 22 at a lower portion of the needle plate 2 4 and the reciprocating drive moving mechanism 9 or the like, the wire hook 3 holds the wire hook line LT and advances and retracts in a horizontal direction orthogonal to the vertical reciprocating movement path of the needles 1a and 1b, and the reciprocating driving mechanism 9 The edge portion 6e of the fixed cutter 6 of the thread trimming device 4 is at the left-front entry and exit position P1 as shown in Figs. 4(A) and (B), as shown in Figs. 3(A) and (B). The entry and exit position P1 is moved back and forth between the retracted position P2 at the right rear side, and in a state where the thread cutting device 4 has moved to the above-described entrance and exit position P1, only the movable cutter 5, which will be described later, is on the side of the needle drop position. The outer position of the (right side) and the outer position of the other side (left side) are linearly reciprocatingly driven along the xy direction, and the left-front front entry and exit position P1 is adjacent to the needle plate 2 and the wire hook 3 The position is a position at which the abutting member 34 to be described later abuts against the stopper member 33 to be described later.
上述構成之雙針雙環縫合縫紉機利用前述線鉤3所保持之線鉤線LT，形成前述針1a、1b在針板2下形成之針線圈NTa'、NTb'，藉此，如圖7所示，於縫製布料W上形成規定長度之雙環縫合縫M。 The double-needle double-loop stitching sewing machine having the above configuration forms the needle stitches NTa' and NTb' formed under the needle plate 2 by the needle hooks LT held by the wire hooks 3, whereby the needle stitches NTa' and NTb' formed under the needle plate 2 are formed as shown in FIG. A double-loop stitching M of a predetermined length is formed on the sewing fabric W.
前述切線裝置4係以如下方式構成：該切線裝置4能夠透過前述往返驅動移動機構9，在靠近前述針板2及線鉤3之前述進出位置P1、與較該進出位置P1更靠右後方之退避位置P2之間往返驅動移動。而且，切線裝置4具有：切線用之可動切刀5，其於規定的縫製動作結束後，即於縫合完成時，切斷於前述縫製布料W的背面側突出之左右之針線部NTa1、 NTb1及線鉤線部LT1；固定切刀6，其刃緣部6e於前述進出位置P1處，在不進入至前述左右之針1a、1b中的右針1b的上下往返運動路徑內之範圍內，配置於最接近落針位置之位置；平板彈簧製的線鉤線夾持構件7，其配置於前述可動切刀5的下部，且於與可動切刀5之間彈性地夾持已切斷之線鉤線部LT的端部；及線夾持輔助彈簧8，其用於調整該線鉤線夾持構件7的夾持力。 The tangential device 4 is configured such that the tangential device 4 can pass through the reciprocating drive mechanism 9 so as to be closer to the right rear side than the entry and exit position P1 of the needle plate 2 and the wire hook 3 and the entry and exit position P1. The reciprocating drive movement between the retracted positions P2. Further, the thread cutting device 4 includes a movable cutter 5 for tangential cutting, which is cut at the left and right needle thread portions NTa1 protruding from the back side of the sewing fabric W after completion of the sewing operation, that is, when the sewing is completed. NTb1 and the wire hooking portion LT1; the fixed cutter 6 whose blade edge portion 6e is within the range of the up-and-down reciprocating path of the right needle 1b of the left and right needles 1a, 1b at the above-described entry and exit position P1 Arranged at a position closest to the needle drop position; a wire hook wire clamping member 7 made of a flat spring is disposed at a lower portion of the movable cutter 5 and elastically clamped and cut between the movable cutter 5 and the movable cutter 5 An end portion of the wire hooking portion LT; and a wire holding assist spring 8 for adjusting the clamping force of the wire hook wire holding member 7.
此處，對本實施形態之情形下之前述進出位置P1處的前述固定切刀6及線鉤線夾持構件7之位置、與習知情形下之前述進出位置P1處的固定切刀6及線鉤線夾持構件7之位置的關係，參照圖5(A)、(B)之比較圖，具體地進行說明。 Here, the position of the fixed cutter 6 and the hook line holding member 7 at the entry and exit position P1 in the case of the present embodiment, and the fixed cutter 6 and the line at the aforementioned entry and exit position P1 in the conventional case are used. The relationship of the position of the hook wire holding member 7 will be specifically described with reference to a comparative diagram of FIGS. 5(A) and (B).
圖5(A)表示本實施形態之情形下之固定切刀6及線鉤線夾持構件7之位置，圖5(B)表示習知情形下之該等構件之位置。於本實施形態之情形下，如圖5(A)所示，以使固定切刀6的刃緣部6e的前端及線鉤線夾持構件7的前端部7e與右針1b的上下運動路徑之間的隔距d盡可能接近於零，且較習知之隔距d1更小(d<d1)之方式，即以位於最大限度地接近於右針1b的上下運動路徑之位置之方式，與圖5(B)所示之習知情形相比較，向左方伸長地形成固定切刀6及線鉤線夾持構件7。 Fig. 5(A) shows the positions of the fixed cutter 6 and the hook line holding member 7 in the case of the present embodiment, and Fig. 5(B) shows the positions of the members in the conventional case. In the case of the present embodiment, as shown in Fig. 5(A), the tip end portion of the blade edge portion 6e of the fixed cutter 6 and the front end portion 7e of the thread hook line holding member 7 and the vertical movement path of the right needle 1b are provided. The gauge d between the two is as close as possible to zero, and is smaller than the conventional gauge d1 (d<d1), that is, in a manner to be located closest to the up and down motion path of the right needle 1b, In comparison with the conventional case shown in Fig. 5(B), the fixed cutter 6 and the hook line holding member 7 are formed to be elongated to the left.
如圖6所示，前述可動切刀5由在左右方向上較長之帶狀板材構成，於靠近該由較長之帶狀板材構成之可動切刀5前端之位置，以使刃部5e的前端緣位於前述帶狀板材的板厚方向的下表面側之方式而形成有該刃部5e，該刃部5e於該可動切刀5自前述進出位置P1即落針位置之靠一側(右側)之外部位置向靠另一側(左側)之外部位置往行驅動移動時， 在落針位置或落針位置附近，依序鍘切切斷在前述針板3上的縫製布料W的背面側突起之左右之針線部NTb1、NTa1。 As shown in Fig. 6, the movable cutter 5 is formed of a strip-shaped plate material which is long in the left-right direction, and is located close to the front end of the movable cutter 5 which is formed of a long strip-shaped plate material so that the blade portion 5e The blade portion 5e is formed on the lower surface side in the thickness direction of the strip-shaped plate material, and the blade portion 5e is on the side of the movable cutter 5 from the entry and exit position P1, that is, the needle drop position (right side) When the external position is driven to the outside of the other side (left side), In the vicinity of the needle drop position or the needle drop position, the right and left needle thread portions NTb1, NTa1 of the back side projection of the sewing fabric W on the needle plate 3 are cut and cut in order.
又，於前述由較長之帶狀板材構成之可動切刀5的前端部，形成有線鉤線捕捉部10，該線鉤線捕捉部10於該可動切刀5自前述落針位置的靠另一側(左側)之外部位置向靠一側(右側)之外部位置返行驅動移動時，鉤掛捕捉於前述針板2上的縫製布料W的背面側突出之線鉤線部LT1，使該線鉤線捕捉部10所捕捉之線鉤線部LT1移動至較前述落針位置的靠一側(右側)之外部位置更靠另一側(右側)之位置為止，藉由前述線鉤線捕捉部10與前述固定刃6的刃緣部6e之滑動接觸而切斷該線鉤線部LT1。 Further, a wire hook line catching portion 10 is formed at a front end portion of the movable cutter 5 composed of a long strip-shaped plate material, and the wire hook wire catching portion 10 is attached to the movable cutter 5 from the needle drop position When the outer position of the one side (left side) is driven back to the outer side of the one side (right side), the hook line portion LT1 that protrudes on the back side of the sewing fabric W on the needle board 2 is hooked. The line hook line portion LT1 captured by the line hook line capturing portion 10 moves to a position closer to the other side (right side) than the outer position of the one side (right side) of the needle drop position, and is caught by the aforementioned hook line The portion 10 is in sliding contact with the blade edge portion 6e of the fixed blade 6, and the wire hook portion LT1 is cut.
往返驅動移動機構9係以圖2、圖3(A)、(B)及圖4(A)、(B)所示之方式構成，該往返驅動移動機構9使前述切線裝置4在前述進出位置P1與前述退避位置P2之間往返驅動移動，並且於切線裝置4已移動至前述進出位置P1之狀態下，僅使前述可動切刀5在落針位置的靠一側(右側)之外部位置與靠另一側(左側)之外部位置之間，沿著x-y方向呈直線地往返驅動移動。 The shuttle drive mechanism 9 is configured as shown in FIGS. 2, 3(A), and (B) and FIGS. 4(A) and 4(B), and the reciprocating drive mechanism 9 causes the thread cutting device 4 to be in the aforementioned entry and exit position. P1 moves back and forth between the retracted position P2 and the outer position of the movable cutter 5 on the side (right side) of the needle drop position in a state where the thread cutting device 4 has moved to the above-described entry and exit position P1. Between the outer positions on the other side (left side), the movement is linearly reciprocated along the xy direction.
亦即，前述可動切刀5的右端部下表面透過螺釘23而固定於可動切刀台24。於該可動切刀台24的長度方向(左右方向)的略中央部形成有U字狀的缺口部25，並且於包夾該缺口部25之左右位置，沿著可動切刀台24的長度方向而形成有較長之左右一對狹縫26a、26b。 That is, the lower surface of the right end portion of the movable cutter 5 is fixed to the movable cutter table 24 via the screw 23. A U-shaped notch portion 25 is formed at a substantially central portion in the longitudinal direction (left-right direction) of the movable cutter table 24, and is disposed along the longitudinal direction of the movable cutter table 24 at a position to the left and right of the notch portion 25 A pair of slits 26a and 26b are formed to have a long length.
前述固定切刀6配置於前述可動切刀5的上表面，切刀台導引件27及前述線鉤線夾持構件7的右端部重合配置於該固定切刀6的右端 部下表面，該等固定切刀6、切刀台導引件27及線鉤線夾持構件7透過螺釘28而固定於固定切刀台29的左端部。前述可動切刀台24藉由插通至前述固定切刀台29背面(下表面)之有帽螺栓48、與自左右一對連桿40a、40b的上表面側***至該左右一對連桿40a、40b的一端部之附突緣之圓柱狀螺帽31a、31b，在前述附突緣之圓柱狀螺帽31a、31b容許前述左右一對連桿40a、40b的一端部轉動之狀態下，且在能夠於前述可動切刀台24的左右一對狹縫26a、26b之長度範圍內滑動移動之狀態下受到夾持。 The fixed cutter 6 is disposed on the upper surface of the movable cutter 5, and the cutter head guide 27 and the right end portion of the wire hook wire clamping member 7 are disposed to overlap the right end of the fixed cutter 6. On the lower surface, the fixed cutter 6, the cutter table guide 27, and the wire hook wire holding member 7 are fixed to the left end portion of the fixed cutter table 29 via the screw 28. The movable cutter table 24 is inserted into the pair of left and right links by a cap bolt 48 that is inserted into the back surface (lower surface) of the fixed cutter table 29 and an upper surface side of the pair of left and right links 40a and 40b. The cylindrical nuts 31a and 31b having the flanges at one end of the 40a and 40b, in a state in which the cylindrical nuts 31a and 31b having the flanges allow the one end portions of the pair of left and right links 40a and 40b to rotate. Further, it is sandwiched in a state in which it can slide in the length range of the pair of left and right slits 26a and 26b of the movable cutter table 24.
前述左右一對連桿40a、40b的另一端部透過附突緣之套筒41a、41b、平頭螺釘42a、42b而螺固於裝置安裝台30，該附突緣之套筒41a、41b自前述左右一對連桿40a、40b的上表面側***且容許於左右一對連桿40a、40b的另一端部內轉動，藉此，前述可動切刀台24及固定切刀台29以能夠隨著左右一對連桿40a、40b的搖動運動而在左右方向上往返移動之狀態，支持於裝置安裝台30。 The other end portions of the pair of right and left links 40a, 40b are screwed to the device mounting base 30 through the flanges 41a, 41b and the grub screws 42a, 42b, and the flanges 41a, 41b are attached to the flanges. The upper surface sides of the pair of right and left links 40a and 40b are inserted and allowed to rotate in the other end portions of the pair of right and left links 40a and 40b, whereby the movable cutter table 24 and the fixed cutter table 29 can be adjusted The state in which the pair of links 40a and 40b are reciprocated in the left-right direction is supported by the device mounting table 30.
再者，附突緣之套筒41a、41b中，右側之附突緣之套筒41b形成為偏心凸輪狀，使得能夠藉由變更右側之連桿40b的兩端孔之間距，以左側之連桿40a的附突緣之套筒41a為支點，對切線裝置4的前述進出位置P1處之可動切刀5的落針部及相對於線鉤3之布料輸送方向上的進出移動起點之位置進行微調整。 Further, in the flanges 41a and 41b with the flanges, the sleeve 41b having the flange on the right side is formed in an eccentric cam shape so that the distance between the ends of the links 40b on the right side can be changed to the left side. The flange 41a of the connecting rod 40a with the flange is a fulcrum, and the needle drop portion of the movable cutter 5 at the aforementioned entry and exit position P1 of the thread cutting device 4 and the position of the movement start point in the cloth conveying direction with respect to the thread hook 3 Make minor adjustments.
於前述固定切刀台29上形成有抵接構件34，該抵接構件34於左右一對連桿40a、40b中的左側之連桿40a的下方位置，抵接於已螺固於前述裝置安裝台30之擋止構件33。 An abutting member 34 is formed on the fixed cutter table 29, and the abutting member 34 abuts on the left side of the pair of left and right links 40a and 40b, and is abutted on the device. The stop member 33 of the table 30.
又，於前述固定切刀台29的長度方向中央部的後部形成有 卡合突起36，該卡合突起36與自較前述可動切刀台24的左端稍微靠右之位置向後方突出之突起35抵接分離，可動切刀台24因該卡合突起36抵接於前述突起35而無法單獨地進一步向右方向移動。而且，前述可動切刀台24以透過彈簧37而總是向左方向移動之方式彈性地受力，該彈簧37螺固於前述裝置安裝台30，且其一端部與前述抵接構件34的右端面彈性接觸。 Further, a rear portion of the center portion in the longitudinal direction of the fixed cutter table 29 is formed. The engaging projection 36 abuts and separates from the projection 35 that protrudes rearward from a position slightly rearward of the left end of the movable cutter table 24, and the movable cutter table 24 abuts against the engaging projection 36. The protrusions 35 are not individually movable in the right direction. Further, the movable cutter table 24 is elastically biased so as to always move in the left direction by the transmission spring 37. The spring 37 is screwed to the device mounting table 30, and one end portion thereof and the right end of the abutting member 34 are provided. Surface elastic contact.
於前述裝置安裝台30中形成有槽46，前述固定切刀台29以於左右方向上自如滑動之方式嵌入至該槽46，該槽46透過配置於周圍之複數個螺釘47而固定於縫紉機梭床22。又，於裝置安裝台30上安裝有驅動桿45，該驅動桿45透過有肩螺釘43而樞支連接於氣缸(圖示省略)的活塞48的前端部，且能夠於裝置安裝台30上，以軸44為中心而沿著箭頭a-b方向驅動搖動，該驅動桿45前端的前端變細之圓形部45a卡合於U字狀的缺口部25，該U字狀的缺口部25形成於前述可動切刀台24的略中央部。 A groove 46 is formed in the device mounting table 30, and the fixed cutter table 29 is slidably inserted into the groove 46 so as to be slidable in the left-right direction, and the groove 46 is fixed to the sewing machine shuttle through a plurality of screws 47 disposed around the periphery. Bed 22. Further, a drive lever 45 is attached to the device mounting base 30. The drive lever 45 is pivotally connected to the front end portion of the piston 48 of the cylinder (not shown) via the shoulder screw 43 and can be mounted on the device mounting base 30. The circular portion 45a whose tip end of the front end of the drive rod 45 is tapered is engaged with the U-shaped notch portion 25, and the U-shaped notch portion 25 is formed in the foregoing, with the shaft 44 being driven to move in the direction of the arrow ab. A slight central portion of the movable cutter table 24 is movable.
根據以上述方式構成之往返驅動移動機構9，如圖3(A)、(B)所示，當驅動桿45因活塞48伸長而向b方向驅動搖動時，切線裝置4抵抗彈簧37的彈性施壓力而向右方移動，卡合突起36與突起35處於抵接狀態，並且左右一對連桿40、41的圓柱狀螺帽31a、31b移動至左右一對狹縫26a、26b內的最靠左側之狀態，固定切刀台29的抵接構件34的左端面與擋止構件33分離。於該狀態下，切線裝置4處於退避位置P2，且以不妨礙線鉤3移動之傾斜姿勢而待機。 According to the reciprocating drive mechanism 9 configured as described above, as shown in FIGS. 3(A) and (B), when the drive lever 45 is driven to swing in the b direction by the extension of the piston 48, the thread trimming device 4 resists the elasticity of the spring 37. The pressure is moved to the right, the engaging projection 36 is in contact with the projection 35, and the cylindrical nuts 31a, 31b of the pair of left and right links 40, 41 are moved to the most in the pair of left and right slits 26a, 26b. In the state of the left side, the left end surface of the abutting member 34 of the fixed cutter table 29 is separated from the stopper member 33. In this state, the thread cutting device 4 is at the retracted position P2, and stands by in an inclined posture that does not hinder the movement of the hooks 3.
其次，如圖4(A)、(B)所示，若驅動桿45因前述活塞48收縮而向a方向驅動搖動，則固定切刀台29的抵接構件34會因彈簧37的 彈性施壓力而向左方移動。隨之，於前述卡合突起36與突起35抵接之狀態下，切線裝置4因左右一對連桿40、41之搖動而減小前述傾斜姿勢之傾斜角度，並且固定切刀台29的抵接構件34的左端面向左方移動直至抵接於擋止構件33為止。藉此，切線裝置4移動至進出位置P1為止，且變為與縫合進行方向略正交之姿勢。 Next, as shown in FIGS. 4(A) and 4(B), when the drive lever 45 is driven to swing in the a direction by the contraction of the piston 48, the abutment member 34 of the fixed cutter table 29 is caused by the spring 37. The elastic pressure exerts and moves to the left. Accordingly, in a state where the engagement projection 36 abuts against the projection 35, the thread cutting device 4 reduces the inclination angle of the tilt posture by the swing of the pair of left and right links 40 and 41, and fixes the offset of the cutter table 29. The left end of the joint member 34 is moved to the left until it abuts against the stopper member 33. Thereby, the thread cutting device 4 moves to the entry and exit position P1, and becomes a posture slightly orthogonal to the sewing progress direction.
若活塞48自該狀態進一步收縮，前述驅動桿45向a方向驅動搖動，則在固定切刀台29停留於前述進出位置P1之狀態下，可動切刀台24通過針板2的落針位置而向左方向(x方向)移動。亦即，僅固定於可動切刀台24之可動切刀5在針板2與線鉤3之間向左行進(往行移動)。此時，前述可動切刀台24及固定切刀台29係以能夠隨著左右一對連桿40a、40b之搖動運動而在左右方向上往返移動之狀態，支持於裝置安裝台30，因此，可動切刀5以藉由左右一對連桿40、41而呈直線地移動之方式受到控制。 When the piston 48 is further contracted from this state and the drive lever 45 is driven to swing in the a direction, the movable cutter table 24 passes the needle drop position of the needle plate 2 in a state where the fixed cutter table 29 stays at the above-described entrance and exit position P1. Move to the left (x direction). That is, only the movable cutter 5 fixed to the movable cutter table 24 travels leftward (moving in the row) between the needle plate 2 and the wire hook 3. In this case, the movable cutter table 24 and the fixed cutter table 29 are supported by the device mounting table 30 in a state in which the movable cutter table 24 and the fixed cutter table 29 are reciprocated in the left-right direction in accordance with the rocking movement of the pair of left and right links 40a and 40b. The movable cutter 5 is controlled to move linearly by the pair of left and right links 40, 41.
其次，前述驅動桿45因活塞48伸長而向b方向驅動搖動，隨之，可動切刀5自行進之最左方之位置向右方向(y方向)移動，向右退回(返行移動)至在前述進出位置P1待機中之固定切刀6的下部為止。活塞48自該狀態進一步收縮，藉此，切線裝置4後退移動至圖3(A)、(B)所示之退避位置P2。 Next, the drive lever 45 is driven to move in the b direction by the extension of the piston 48, and accordingly, the leftmost position of the movable cutter 5 is moved to the right (y direction), and is retracted to the right (returned to the right). The lower portion of the fixed cutter 6 in standby at the aforementioned entry and exit position P1. The piston 48 is further contracted from this state, whereby the thread cutting device 4 moves backward to the retracted position P2 shown in Figs. 3(A) and (B).
除了以上所說明之構成及裝置之外，本實施形態之雙環縫合縫紉機亦具備針線按壓裝置50、緊線裝置。 In addition to the above-described configuration and apparatus, the double loop sewing machine of the present embodiment is also provided with a needle thread pressing device 50 and a thread tightening device.
如圖1所示，針線按壓裝置50透過托架51而安裝於針板2上方部的縫紉機臂部21。雖省略圖示，但該針線按壓裝置50係以透過氣缸 及彈簧而使前後一對針線按壓板抵接分離之方式構成，於縫合完成之情形下，當前述切線裝置4的可動切刀5鍘切切斷針線部NTa1、NTb1時，於針板2的上方部，藉由一對針線按壓板之抵接而按壓保持針線NTa、NTb。 As shown in FIG. 1, the needle thread pressing device 50 is attached to the sewing machine arm portion 21 at the upper portion of the needle plate 2 via the bracket 51. Although not shown, the needle thread pressing device 50 is a transmission cylinder. And a spring, the front and rear pair of needle thread pressing plates are abutted and separated, and when the sewing is completed, when the movable cutter 5 of the thread cutting device 4 cuts the needle thread portions NTa1 and NTb1, the needle plate 2 is above the needle plate 2 The portion presses and holds the needle threads NTa, NTb by abutment of a pair of needle thread pressing plates.
又，鬆線裝置在前述可動切刀5開始往行驅動移動之同時，使各線張力圓盤52、53(參照圖1)上浮(鬆弛)，從而瞬間送出針線NTa、NTb及線鉤線LT。利用該鬆線裝置使線鉤線LT鬆弛，藉此，能夠在可動切刀5的線鉤線捕捉部5c所鉤掛捕捉之線鉤線LT移動至利用了固定切刀6的刃緣部6e與線鉤線捕捉部5c之滑動接觸之切斷位置為止時，使可動切刀5穩定地移動。又，藉由可動切刀5切斷各線後，當自針板2上取出縫製布料W時，能夠藉由自縫製布料W拔出針線NTa、NTb時之阻力而稍微抽出各針線NTa、NTb，穩定地形成下一個縫合縫。 Further, the loose threading device lifts (relax) the linear tension discs 52 and 53 (see FIG. 1) while the movable cutter 5 starts to move in the row, and instantaneously feeds the needle threads NTa and NTb and the hook line LT. By the loosening device, the thread hook line LT is loosened, whereby the hook line LT hooked and caught by the thread hook line catching portion 5c of the movable cutter 5 can be moved to the edge portion 6e using the fixed cutter 6. When the cutting position of the wire hook line catching portion 5c is in sliding contact, the movable cutter 5 is stably moved. In addition, when the sewing fabric W is taken out from the needle board 2, the needles NTa and NTb can be slightly extracted by the resistance when the needle wires NTa and NTb are pulled out from the sewing fabric W. The next seam is stably formed.
其次，基於圖7說明以上述方式構成之本實施形態之雙針雙環縫合縫紉機的切線裝置4之切線動作。 Next, the tangential operation of the thread cutting device 4 of the double needle double loop sewing machine of the present embodiment configured as described above will be described based on Fig. 7 .
首先，如圖7(a)所示，於縫合完成時，在切線裝置4移動至落針位置的靠一側之外部位置即前述進出位置P1為止後，如圖7(b)所示，僅可動切刀5自前述進出位置P1向落針位置的靠另一側之外部位置，朝箭頭x方向往行驅動移動(向左行進)。於該往行驅動移動時，該可動切刀5的刃部5e依序推碰至在縫製布料W的背面側突出之右針線部NTb1、左針線部NTa1，上述右、左之各針線部NTb1、NTa1於落針位置或落針位置附近被鍘切切斷。藉由該切斷，右、左之各針線部NTb1、NTa1各自如圖8所示，成為自縫製布料W的背面至可動切刀5的刃部5e的通過位置為止之較短的線剩餘長度。 First, as shown in Fig. 7(a), after the suturing device 4 is moved to the outer position on the side of the needle drop position, that is, the above-described entry and exit position P1, as shown in Fig. 7(b), only The movable cutter 5 is driven to move in the direction of the arrow x from the aforementioned entry and exit position P1 to the outer position on the other side of the needle drop position (toward the left). When the drive is moved in the forward direction, the blade portion 5e of the movable cutter 5 is sequentially pushed to the right needle thread portion NTb1 and the left needle thread portion NTa1 which protrude from the back side of the sewing fabric W, and the right and left needle thread portions NTb1 NTa1 is cut and cut at the needle drop position or the needle drop position. By this cutting, each of the right and left needle thread portions NTb1, NTa1 becomes a shorter remaining line length from the back surface of the sewing fabric W to the passing position of the blade portion 5e of the movable cutter 5, as shown in Fig. 8 . .
接著，如圖7(c)所示，可動切刀5前端側的線鉤線捕捉部10越過架在線鉤3的前端附近與縫製布料W的背面側之間的線鉤線部LT1後，可動切刀5的移動方向立即反轉。繼而，如圖7(d)所示，可動切刀5自前述落針位置的靠另一側之外部位置向前述進出位置P1，朝箭頭y方向返行驅動移動(向右退回)。於該返行驅動移動時，於縫製布料W的背面側突出之線鉤線部LT1被線鉤線捕捉部10鉤掛捕捉。接著，可動切刀5進一步向箭頭y方向返行驅動移動，藉此，如圖7(e)所示，前述線鉤線捕捉部10所捕捉之線鉤線部LT1因該捕捉部10與固定切刀6的刃緣部6e之滑動接觸而被切斷。於該切斷時，固定切刀6的刃緣部6e如圖5(A)所示，位於最接近於右針1b的上下運動路徑之位置，因此如圖8所示，切斷後殘留於縫製布料W背面之線鉤線部LT1的長度亦變短。 Then, as shown in FIG. 7(c), the thread hook line catching portion 10 on the distal end side of the movable cutter 5 moves over the line hook line portion LT1 between the vicinity of the front end of the wire hook 3 and the back side of the sewing cloth W, and is movable. The moving direction of the cutter 5 is immediately reversed. Then, as shown in FIG. 7(d), the movable cutter 5 is driven to move backward (returned to the right) toward the arrow y direction from the outer position on the other side of the needle drop position to the entrance and exit position P1. At the time of the return drive driving, the thread hook line portion LT1 protruding on the back side of the sewing fabric W is caught by the hook line catching portion 10. Then, the movable cutter 5 is further driven to move in the direction of the arrow y. Thereby, as shown in FIG. 7(e), the line hook line portion LT1 captured by the line hook line capturing portion 10 is fixed by the capturing portion 10 The blade edge portion 6e of the cutter 6 is slidably contacted and cut. When the cutting is performed, the edge portion 6e of the fixed cutter 6 is located at the position closest to the vertical movement path of the right needle 1b as shown in Fig. 5(A). Therefore, as shown in Fig. 8, the cutting edge remains after sewing. The length of the wire hooking portion LT1 on the back side of the cloth W is also shortened.
其後，如圖7(f)所示，針1a、1b向針板2的上方移動，並且保持於線鉤3之線鉤線LT的端部彈性地夾持於可動切刀5與線鉤線夾持構件7之間，而且，切線裝置4透過往返驅動移動機構9而移動至如圖3(A)、(B)所示之退避位置P2，以不妨礙線鉤3移動之傾斜姿勢成為下一次縫製之待機狀態。 Thereafter, as shown in Fig. 7 (f), the needles 1a, 1b are moved upward of the needle plate 2, and the ends of the hook lines LT held by the hooks 3 are elastically held by the movable cutter 5 and the thread hooks. Between the wire holding members 7, the tangential device 4 is moved to the retracted position P2 shown in Figs. 3(A) and (B) by the reciprocating drive mechanism 9, so that the tilting posture does not hinder the movement of the hooks 3 Standby state of the next sewing.
如上所述，根據本實施形態之雙環縫合縫紉機的切線裝置4，於規定的縫製動作後(縫合完成後)，使可動切刀5自落針位置的靠一側之外部位置向靠另一側之外部位置往行驅動移動，藉此，能夠將該可動切刀5的刃部5e推碰至在縫製布料W的背面側突出之左右之針線部NTb1、NTa1，於落針位置或落針位置附近鍘切切斷該等針線部NTb1、NTa1，且能夠縮短縫製布料W背面的針線部NTb1、NTa1的剩餘長度。 As described above, according to the thread cutting device 4 of the double loop sewing machine of the present embodiment, after the predetermined sewing operation (after the sewing is completed), the movable cutter 5 is moved from the outer side of the needle drop position to the other side. The outer position is driven to move in the row, whereby the blade portion 5e of the movable cutter 5 can be pushed to the left and right needle thread portions NTb1, NTa1 protruding on the back side of the sewing cloth W, at the needle drop position or the needle drop position. The needle thread portions NTb1 and NTa1 are cut and cut in the vicinity, and the remaining length of the needle thread portions NTb1 and NTa1 on the back surface of the sewing cloth W can be shortened.
又，於使可動切刀5自落針位置的靠另一側之外部位置向靠一側之外部位置返行驅動移動時，由形成於該可動切刀5之線鉤線捕捉部10鉤掛捕捉在縫製布料W的背面側突出之線鉤線部LT1後，能夠藉由固定切刀6與線鉤線捕捉部10之滑動接觸而切斷該線鉤線部LT1，亦能夠盡可能地縮短縫製布料W背面之線鉤線部LT1的剩餘長度，上述固定切刀6前端之刃緣部6e於較前述靠一側之外部位置更靠另一側之位置，在不進入至右針1b的上下往返運動路徑內之範圍內，位於最接近落針位置之位置。 Further, when the movable cutter 5 is driven to move backward from the outer position on the other side from the other side of the needle drop position, the hook line catching portion 10 formed in the movable cutter 5 is hooked. After the wire hooking portion LT1 protruding from the back side of the sewing fabric W is caught, the wire hooking portion LT1 can be cut by sliding contact between the fixed blade 6 and the wire hooking wire capturing portion 10, and can be shortened as much as possible. The remaining length of the thread hooking portion LT1 on the back surface of the sewing cloth W, the edge portion 6e of the tip end of the fixed cutter 6 is located on the other side from the outer side of the side of the fixed cutter 6, and does not enter the right needle 1b. Within the range of the up and down movement path, it is located at the position closest to the needle drop position.
因此，於縫合完成時，無需煩雜的手工作業例如使用剪刀等，以使線剩餘長度縮短之方式切斷縫製布料W的背面側的各線部NTb1、NTa1、LT1，不僅能夠提高縫製作業效率，而且亦能夠提高縫合完成之縫製物的美觀程度而無因剪刀等損傷縫製布料之虞。 Therefore, when the sewing is completed, it is possible to cut the wire portions NTb1, NTa1, and LT1 on the back side of the sewing fabric W so that the remaining length of the wire is shortened without complicated work, for example, using scissors, etc., and the sewing work efficiency can be improved. It is also possible to improve the aesthetics of the sewn finished stitch without smashing the fabric due to damage such as scissors.
尤其在針板2的上方部設置針線按壓裝置50，藉此，當利用前述可動切刀5的刃部5e鍘切切斷針線部NTb1、NTa1時，能夠對針線NTb、NTa賦予一定之張力且維持該張力，因此，能夠於落針位置或落針位置附近，確實且鋒利地切斷針線部NTb1、NTa1。 In particular, the needle thread pressing device 50 is provided in the upper portion of the needle plate 2, whereby when the needle thread portions NTb1 and NTa1 are cut by the blade portion 5e of the movable knife 5, the needle wires NTb and NTa can be fixed and maintained at a constant tension. With this tension, the needle thread portions NTb1 and NTa1 can be surely and sharply cut in the vicinity of the needle drop position or the needle drop position.
再者，關於上述實施形態之雙環縫合縫紉機，說明了自縫合開始至縫合結束為止，總是一面以一定量輸送縫製布料W一面進行縫製動作之雙環縫合縫紉機，但亦可為具備輸送量控制部之雙環縫合縫紉機，該輸送量控制部使縫合完成前的一針之縫製動作時的縫製布料W的輸送量，小於此前之縫製動作時的縫製布料W的輸送量。根據此種具備輸送量控制部之雙環縫合縫紉機，如圖9所示，形成雙環縫合縫M(一般稱為收縮縫跡(condense stitch))，其縫合即將完成前之針線間距P1小於此前之針線間 距P。 In the double-loop sewing machine of the above-described embodiment, the double-loop sewing machine that performs the sewing operation while the sewing cloth W is always conveyed by a predetermined amount from the start of sewing to the end of the sewing is described, but the conveying amount control unit may be provided. In the double loop sewing machine, the conveyance amount control unit makes the conveyance amount of the sewing fabric W at the time of the sewing operation of one stitch before the completion of the sewing is smaller than the conveyance amount of the sewing fabric W in the previous sewing operation. According to such a double loop sewing machine having a conveyance amount control unit, as shown in FIG. 9, a double loop stitching M (generally referred to as a condense stitch) is formed, and the stitch pitch P1 before stitching is completed is smaller than the previous needle thread. between From P.
於該情形時，最後的縫合縫的針線部NTb1、NTa1之位置向布料輸送方向與針1b、1a的上下運動路徑相隔之隔距小於通常的輸送量之情形下之隔距，該最後的縫合縫的針線部NTb1、NTa1連接於縫製布料W的背面且於針板2的下表面突出，因此，即便未增大可動切刀5的刃部5e的長度，對於如圖10所示之較短的刃部5e而言，仍能夠確實地將該刃部5e推碰至各針線部NTb1、NTa1，從而鍘斷各針線部NTb1、NTa1。 In this case, the position of the needle thread portions NTb1, NTa1 of the last stitching is spaced apart from the up and down motion path of the needles 1b, 1a by a distance of less than the normal transport amount, and the final stitching is performed. The sewn stitching portions NTb1, NTa1 are connected to the back surface of the sewing fabric W and protrude on the lower surface of the needle plate 2. Therefore, even if the length of the blade portion 5e of the movable cutter 5 is not increased, it is shorter as shown in FIG. In the blade portion 5e, the blade portion 5e can be surely pushed to the respective needle thread portions NTb1, NTa1, thereby breaking the respective needle thread portions NTb1, NTa1.
又，於上述實施形態中，說明了以使刃部5e的前端緣位於構成可動切刀5之帶狀板材的板厚方向的下表面側之方式，形成可動切刀5的該刃部5e，但亦可以使刃部5e的前端緣位於前述帶狀板材的板厚方向的上表面側之方式，形成該刃部5e。於該情形時，能夠以帶狀板材(可動切刀5)的略板厚之量，進一步縮短由可動切刀5的刃部5e鍘切切斷之各針線部NTb1、NTa1的線剩餘長度。 Moreover, in the above-described embodiment, the blade portion 5e of the movable cutter 5 is formed such that the front end edge of the blade portion 5e is located on the lower surface side in the thickness direction of the strip-shaped plate material constituting the movable cutter 5. However, the blade portion 5e may be formed such that the front end edge of the blade portion 5e is located on the upper surface side in the thickness direction of the strip-shaped plate member. In this case, the remaining line length of each of the needle thread portions NTb1 and NTa1 cut and cut by the blade portion 5e of the movable cutter 5 can be further shortened by the thickness of the strip-shaped plate material (movable cutter 5).
再者，本發明之切線裝置能夠特別有效地用作拼縫縫紉機等雙針雙環縫合縫紉機的切線裝置，當然亦可用作一針或三針以上之複數針雙環縫合縫紉機或除此以外之各種形態的縫紉機的切線裝置。 Furthermore, the tangential device of the present invention can be used particularly effectively as a tangential device for a double-needle double-loop sewing machine such as a seam sewing machine, and can of course be used as a multi-needle double-loop sewing machine of one or three or more needles or various other types. The tangential device of the sewing machine.
2‧‧‧針板 2‧‧‧ needle board
20‧‧‧縫紉機本體 20‧‧‧Sewing machine body
21‧‧‧縫紉機臂部 21‧‧‧Sewing machine arm
22‧‧‧縫紉機梭床 22‧‧‧Sewing machine shuttle
50‧‧‧針線按壓裝置 50‧‧‧Needle pressing device
51‧‧‧托架 51‧‧‧ bracket
52、53‧‧‧線張力圓盤 52, 53‧‧‧ wire tension disc
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
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| JP2013174987A JP5777035B2 (en) | 2013-08-08 | 2013-08-08 | Thread trimming device and thread trimming method for double chain stitch sewing machine |
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| TW201510316A true TW201510316A (en) | 2015-03-16 |
| TWI565849B TWI565849B (en) | 2017-01-11 |
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| JP (1) | JP5777035B2 (en) |
| CN (1) | CN104342858B (en) |
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| JP6395136B2 (en) * | 2015-05-08 | 2018-10-03 | ヤマトミシン製造株式会社 | Thread trimmer for double chain stitch machine |
| TWI727017B (en) * | 2016-03-16 | 2021-05-11 | 日商大和縫紉製造股份有限公司 | Fabric sewing method and double loop stitch sewing machine |
| CN105970503B (en) * | 2016-07-26 | 2018-09-25 | 杰克缝纫机股份有限公司 | A kind of idle loop suture clamping device and sewing machine |
| CN111501213B (en) * | 2019-01-31 | 2021-06-04 | 杰克缝纫机股份有限公司 | Method for adjusting needle distance by lifting and pressing thread of sewing machine |
| CN111979652A (en) * | 2019-05-24 | 2020-11-24 | Juki株式会社 | Sewing machine for sewing decoration |
| CN110878451B (en) * | 2019-12-06 | 2022-03-01 | 拓卡奔马机电科技有限公司 | Needle plate structure and sewing machine |
| CN114770057B (en) * | 2022-05-25 | 2024-06-21 | 杭州双元链条有限公司 | Processing method of plug disc shift-up chain |
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| JP2002346266A (en) * | 2001-05-23 | 2002-12-03 | Juki Corp | Thread cutter for sewing machine |
| JP3779912B2 (en) * | 2001-11-19 | 2006-05-31 | Ｊｕｋｉ株式会社 | Buttonhole sewing machine |
| JP4645886B2 (en) * | 2004-09-07 | 2011-03-09 | ヤマトミシン製造株式会社 | Sewing machine with thread trimmer |
| JP2006271476A (en) * | 2005-03-28 | 2006-10-12 | Juki Corp | Sewing machine |
| JP5557126B2 (en) * | 2007-10-17 | 2014-07-23 | ヤマトミシン製造株式会社 | Sewing machine thread trimmer |
| JP5321938B2 (en) * | 2007-10-29 | 2013-10-23 | ヤマトミシン製造株式会社 | Sewing machine thread trimmer |
| JP2010188106A (en) * | 2009-02-18 | 2010-09-02 | Yamato Sewing Machine Mfg Co Ltd | Thread cutter for button sewing machine |
| JP5494598B2 (en) * | 2011-05-23 | 2014-05-14 | ヤマトミシン製造株式会社 | Method for preventing fraying of stitches, fraying prevention device for stitches, and stitch structure |
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| JP5777035B2 (en) | 2015-09-09 |
| TWI565849B (en) | 2017-01-11 |
| CN104342858A (en) | 2015-02-11 |
| JP2015033564A (en) | 2015-02-19 |
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