TW201708650A

TW201708650A - Double chainstitch sewing machine equipped with seam fray-stopping device

Info

Publication number: TW201708650A
Application number: TW105113938A
Authority: TW
Inventors: 木下竜一郎
Original assignee: 大和縫紉製造股份有限公司
Priority date: 2015-05-11
Filing date: 2016-05-05
Publication date: 2017-03-01
Also published as: CN107532358B; TWI734685B; CN107532358A; JP6395137B2; JP2016209505A; WO2016182089A1

Abstract

A looper thread trapping and cutting part with blade is formed on the edge at the tip of a movable knife, and at positions in front and behind one another in the direction of reciprocating drive movement of the movable knife, on the edge and further towards the base of the movable knife than this looper thread trapping and cutting part with blade. As a result of this configuration, it is possible to provide a thread-cutting device for double chainstitch sewing machine which, by reliably feeding the needle thread part that protrudes to the rear side of the sewing fabric when sewing is completed, to a predetermined cutting position, makes it possible to cut to a uniform stable remaining thread length, and to ensure an end of sewing part that has a good and uniform finish and appearance.

Description

附有線跡綻線防止裝置之雙環縫合縫紉機 Double loop sewing machine with cable trace prevention device

本發明主要關於一種附有線跡綻線防止裝置之雙環縫合縫紉機，其使用以橫筒形為代表之雙環縫合縫紉機，藉由針線與彎針線形成雙環縫合之線跡，從而防止於該雙環縫合之線跡之縫紉終端部分產生綻線。 The present invention relates to a double-loop stitching sewing machine with a wire-wound line preventing device, which uses a double-loop stitching sewing machine represented by a horizontal tube shape, and forms a double-loop stitching stitch by a needle thread and a looper thread, thereby preventing the double loop stitching. The sewing terminal portion of the stitch generates a fray.

一般的橫筒形等雙環縫合縫紉機具備保持針線且上升及下降之針、及保持彎針線且於與前述針之上下運動路徑大致正交之方向進行進退動作的彎針，前述針藉由前述彎針之進入動作捕捉形成於針板下方之針線線環，藉由該彎針所保持之彎針線使前述針線互連，藉由反復進行前述動作而於縫製縫料上形成雙環縫合之線跡。 A double-loop stitching sewing machine such as a horizontal tube has a needle that holds a needle thread and that rises and falls, and a looper that holds a looper thread and advances and retracts in a direction substantially perpendicular to a direction in which the needle moves up and down. The needle is bent by the aforementioned The needle entering movement captures the needle thread loop formed under the needle plate, and the needle thread is interconnected by the looper thread held by the looper, and the stitching of the double loop stitch is formed on the sewing seam by repeating the foregoing operation.

藉由雙環縫合縫紉機形成之一般的雙環縫合之線跡之構造如圖27所示，具有當縫紉結束時被切斷之彎針線10之端部10a被拉伸於圖27中之箭頭所示方向時，該彎針線10自針線20a、20b所形成之最後的針線線環20a2、20b2脫散，該脫散容易向縫紉起始側波及移行，其結果，線跡M整體產生綻線。 The structure of the general double loop stitching stitch formed by the double loop stitching sewing machine is as shown in Fig. 27, and the end portion 10a of the looper thread 10 which is cut when the sewing is finished is stretched in the direction indicated by the arrow in Fig. 27. At this time, the looper thread 10 is disengaged from the last needle thread loops 20a2, 20b2 formed by the needle threads 20a, 20b, and the disengagement easily fluctuates to the sewing start side, and as a result, the stitch M as a whole is frayed.

為了防止上述由雙環縫合縫紉機形成之線跡特有的綻線問題，本申請人成功地開發了如日本特開2011-206527號公報及特開2013-6009號公報所示附防綻線裝置之雙環縫合縫紉機(以下，將其稱為本申請人之先前技術)。 In order to prevent the above-mentioned problem of the fray characteristic peculiar to the stitch formed by the double loop sewing machine, the present applicant has successfully developed a double ring with an anti-frozen device as shown in Japanese Laid-Open Patent Publication No. 2011-206527 and No. 2013-6009. The sewing machine is stitched (hereinafter, referred to as the prior art of the applicant).

上述本申請人之先前技術即雙環縫合縫紉機之防綻線裝置如圖28及圖29所示具備：針2a、2b，其保持針線20a、20b(參照本發明之實施形態中說明之圖17~圖23)且相對於設定於針板12之大致中央處且於左右方向隔開間隔的落針位置A、A上下活動(參照本發明之實施形態中說明之圖17~圖23)；彎針1，其能保持彎針線10且於落針位置A、A之排列方向進行進退動作，當進入時捕捉形成於針板12下之針線線環20a2、20b2(參照本發明之實施形態中說明之圖17~圖23)；掛線鉤3，其彎曲成圓弧狀，能相對於彎針1進行接近及相離動作，能於如圖28所示遠離彎針1之待機位置與如圖29所示接近彎針1之掛線位置之間、以上下方向之支軸30為中心而於與針板12大致平行之面內搖擺；彎針線保持體6，其彎曲成圓弧狀，藉由固定螺絲60固定於該掛線鉤3之中途部上表面且與掛線鉤3一體搖擺；線操作氣缸32，其驅動前述掛線鉤3及彎針線保持體6於前述待機位置與掛線位置搖擺；搖擺桿9及止動桿4，其配置於較掛線鉤3遠離針板12之位置，且支撐於針板台11之上表面且於與針板12大致平行之面內以上下方向之支軸90為中心搖擺，以使掛線鉤3於掛線位置所捕捉之針線線環20a2、20b2保持於掛線位置與待機位置之間的保持位置；止動氣缸42，其驅動止動桿4自卡合於搖擺桿9之一部分之卡合位置向離開該卡合位置之退避位置搖擺；連結棒35，其連動連結前述掛線鉤3與搖擺桿9；復位彈簧91，其配置於連結棒35與位於線操作氣缸32左側且向前方突出之彈簧鉤掛部95之間；及控制部8，其當常規之縫製結束後選擇性地對前述線操作氣缸32及止動氣缸42進行動作控制，使由掛線鉤3之前端之鉤部3b於掛線位置捕捉之一方之針線線環20b2保持於前述保持位置，且使彎針線保持體6之前端之線承接部6a於鉤部3b之前方位於彎針1之上側，維持該狀態而進行至少1針量之縫製動作(參照本發明之實施形態中說明之圖15)。 As shown in Figs. 28 and 29, the anti-frozen line device of the prior art which is the prior art of the double-loop stitching sewing machine includes needles 2a and 2b which hold the needle threads 20a and 20b (refer to Fig. 17 which is described in the embodiment of the present invention). FIG. 23) is movable up and down with respect to the needle drop positions A and A which are set at substantially the center of the needle plate 12 and spaced apart in the left-right direction (refer to FIGS. 17 to 23 described in the embodiment of the present invention); 1. It can hold the looper thread 10 and advance and retreat in the direction in which the needle drop positions A and A are arranged, and capture the needle thread loops 20a2 and 20b2 formed under the needle plate 12 when entering (refer to the embodiment of the present invention). Fig. 17 to Fig. 23); the hook hook 3 is bent into an arc shape, and can be approached and disengaged relative to the looper 1, and can be moved away from the standby position of the looper 1 as shown in Fig. 28 and Fig. 29 The support shaft 30, which is close to the hook line position of the curved needle 1, is pivoted in a plane substantially parallel to the needle plate 12, and the looper wire retaining body 6 is curved in an arc shape. The fixing screw 60 is fixed on the upper surface of the middle portion of the hanging hook 3 and swings integrally with the hanging hook 3; a cylinder 32 that drives the hook hook 3 and the hook thread holding body 6 to swing at the standby position and the hanging position; the swing lever 9 and the stopping lever 4 are disposed at a position away from the needle board 12 from the hook hook 3; And supporting the upper surface of the needle plate table 11 and swinging about the support shaft 90 in the upper and lower directions in a plane substantially parallel to the needle plate 12, so that the thread hook 20a of the thread hook 3 is caught at the hanging position. 20b2 is maintained at a holding position between the hanging position and the standby position; the stopping cylinder 42 is driven to swing from the engaging position of the portion of the swinging rod 9 to the retracted position away from the engaging position; a connecting rod 35 that interlockably connects the hook hook 3 and the swing lever 9; and a return spring 91 disposed between the connecting rod 35 and the spring hook portion 95 located on the left side of the thread operating cylinder 32 and protruding forward; and a control portion 8. The operation of the wire operating cylinder 32 and the stopping cylinder 42 is selectively controlled after the conventional sewing is completed, so that the hook portion 3b at the front end of the hanging hook 3 captures one of the sewing thread loops at the hanging position. 20b2 is maintained in the aforementioned holding position, and the looper line is maintained The thread receiving portion 6a at the front end of the holding body 6 is positioned above the looper 1 before the hook portion 3b, and is maintained in this state to perform a sewing operation of at least one stitch (refer to Fig. 15 described in the embodiment of the present invention).

再者，本申請人之先前技術即雙環縫合縫紉機之防綻線裝置中，針板台11係構成為於左右方向較長之一體物件，但本發明之實施形態中，以針板台11為左右分割為兩部分之構成者進行說明。除此以外，對於與後述之本發明之實施形態中說明之雙環縫合縫紉機之防綻線裝置中的構成構件及構成部位相同或對應的構成構件及構成部位，標注與本發明之實施形態之防綻線裝置中說明之符號相同的符號，且省略其等之詳細說明。 Further, in the anti-frozen line device of the prior art which is the double-loop stitching sewing machine of the present applicant, the needle-plate stage 11 is configured to be a long object in the left-right direction. However, in the embodiment of the present invention, the needle-plate stage 11 is used. The description will be made by dividing the left and right into two parts. In addition, the constituent members and constituent parts of the anti-frozen line device of the double-loop stitching sewing machine described in the embodiment of the present invention described later are the same as those of the embodiment of the present invention. The symbols in the fray device are denoted by the same reference numerals, and detailed descriptions thereof will be omitted.

根據上述本申請人之先前技術即防綻線裝置，當常規之縫製結束後，透過控制部8控制掛線鉤3、彎針線保持體6、止動桿4及搖擺桿9之各動作而進行如上所述之1針量之縫製動作，藉此，如圖30所示，彎針線10穿過雙環縫合之線跡M最後形成於縫製縫料之背面的右側(圖30中之左側)之最後的針線線環20b2內，於進行用於防綻線之1針量之縫製時脫散於縫製縫料之背面側的針線20b前方折回，且於穿過右側最後的針線線環20b2內之位置被切斷，其結果，藉由針線20b與彎針線10，形成如圖所示之繩結狀之互連。另一方面，進行1針量之縫製時自縫製縫料之背面側之左側(圖30中之右側)穿出的針線20a穿過常規縫製時最後形成於縫製縫料背面的最後的針線線環20a2內，將該最後的針線線環20a2自連。藉此，藉由左側之自連部與右側之繩結狀互連的加乘作用，即便對彎針線10作用有任一方向之力，亦能防止於雙環縫合之線跡M產生特有的綻線。 According to the above-mentioned applicant's prior art, that is, the anti-frozen line device, after the conventional sewing is completed, the control unit 8 controls the respective operations of the hook hook 3, the hook thread holding body 6, the stopper rod 4, and the swing lever 9 to perform the respective operations. The sewing operation of one stitch as described above, whereby, as shown in Fig. 30, the looper thread 10 passes through the double loop stitching stitch M and is finally formed on the right side (the left side in Fig. 30) of the back side of the sewing seam. The needle thread loop 20b2 is folded back in front of the needle thread 20b which is dissipated on the back side of the sewing material when sewing for one stitch of the anti-friction thread, and passes through the last needle thread loop 20b2 on the right side. When it is cut, as a result, the needle thread 20b and the looper thread 10 form a cord-like interconnection as shown. On the other hand, when the sewing of one stitch is performed, the needle thread 20a which is threaded from the left side (the right side in Fig. 30) on the back side of the sewing material passes through the last sewing thread loop which is finally formed on the back surface of the sewing material during the conventional sewing. In 20a2, the last needle thread loop 20a2 is self-joined. Thereby, by the multiplication function of the self-joining portion on the left side and the knot-like interconnection on the right side, even if a force in any direction is applied to the looper thread 10, the stitch M of the double loop stitching can be prevented from generating a unique flaw. line.

如上所述，根據本申請人之先前技術即附綻線防止裝置之雙環縫合縫紉機，於結束常規之縫製之後連續地進行如上所述之用於防綻線的1針量之縫製動作，藉此，能有效防止雙環縫合之線跡產生特有的綻線。故縫製結束後無須進行加固針縫等防綻線專用之其他步驟作業，能提高依序連續生產大量縫製品時之縫製作業效率。然而，於本申請人已成功開發之作為先前技術的雙環縫合縫紉機中，根據線之種類或線之緊固等之調整，有時會因用於進行自連之防綻線動作而令彎針線產生鬆弛。其結果，存在縫紉結束時切線裝置對彎針線之切斷及切斷後之彎針線端部之保持產生不良狀況，使下一縫製處理無法按照既定進行之問題。以下，對此點進行詳細敘述。 As described above, according to the prior art of the present applicant, that is, the double loop sewing machine for the fray line preventing device, the anti-friction line as described above is continuously performed after the end of the conventional sewing. The sewing operation of one stitch is effective in preventing the stitches of the double loop stitching from generating a unique fray. Therefore, it is not necessary to perform other steps dedicated to the anti-frozen line such as the reinforcement stitching after the sewing is completed, and the sewing work efficiency in the case of continuously producing a large number of sewing products in sequence can be improved. However, in the double-loop stitch sewing machine which has been successfully developed by the present applicant as a prior art, depending on the type of the wire or the fastening of the wire, etc., the hook thread is sometimes caused by the anti-friction line action for self-joining. Produces slack. As a result, there is a problem that the thread cutting device cuts the hook line and maintains the end of the looper thread after the sewing is completed, and the next sewing process cannot be performed as intended. Hereinafter, this point will be described in detail.

於本申請人之先前技術即雙環縫合縫紉機中，為了利用自連獲得防綻線效果，如本發明之實施形態之圖18及圖19中所說明般，當結束常規縫製後，不可缺少使掛線鉤3相對於彎針1進行接近動作而使針線線環20a2保持於較針之下降位置靠彎針1之進入端側，且使彎針線保持體6相對於彎針1進行接近動作且藉由該彎針線保持體6之前端之彎針線承接部6a使自縫製縫料延伸之彎針線10保持於左側之落針位置之動作。根據上述線之種類或線之緊固等之調整，有無法除去因此種為了利用自連獲得防綻線效果而不可缺少之動作產生的彎針線10之鬆弛之情況。 In the prior art, that is, the double loop stitching sewing machine of the present applicant, in order to obtain the anti-frozen effect by self-joining, as illustrated in FIGS. 18 and 19 of the embodiment of the present invention, when the conventional sewing is finished, it is indispensable to hang. The wire hook 3 is brought into close motion with respect to the looper 1 to hold the needle thread loop 20a2 at the lower end position of the looper 1 on the entry end side of the looper 1, and to cause the looper thread retaining body 6 to approach the looper 1 and borrow The looper thread receiving portion 6a at the front end of the looper thread holding body 6 holds the looper thread 10 extending from the sewing material to the needle drop position on the left side. According to the adjustment of the type of the above-mentioned wire or the fastening of the wire or the like, there is a case where the slack of the looper thread 10 which is indispensable for obtaining the anti-frozen effect by the self-connection is not removed.

而且，若彎針線10產生鬆弛，則如圖31所示，當伴隨針之上升而使位於彎針1後側(圖31中之近前側)之針線20a、20b如箭頭d所示向下方移動時，有彎針線10滑接於針線20a、20b且捲入至彎針1下方之狀況。此種狀態下，即便切線裝置5作動，且如圖32所示，可動切刀50自接近前述彎針1之朝左前方之進入位置向靠落針位置之另一側(左側)之外部位置於箭頭x方向進行往行驅動移動，可動切刀50前端側之彎針線捕捉部50a亦無法順利地鉤掛跨及彎針1之前端附近與縫製縫料W之背面側之間的彎針線10，不僅如此，還將使彎針線10與針線20a、20b一同鉤掛於可動切刀50之針線捕捉部50b而被切斷。被切斷之針線20a、20b如通常般藉由針線挑去機構等被向針板12上方挑起，而被切斷之彎針線10相對於彎針1前端之線孔成為自由狀態。 Further, when the looper thread 10 is slackened, as shown in Fig. 31, the needle thread 20a, 20b located on the rear side (the front side in Fig. 31) of the looper 1 is moved downward as indicated by the arrow d as the needle is raised. At this time, the looper thread 10 is slidably attached to the needle thread 20a, 20b and is wound under the looper 1. In this state, even if the thread cutting device 5 is actuated, as shown in Fig. 32, the movable cutter 50 is moved from the entry position toward the left front of the looper 1 to the outer position on the other side (left side) of the needle drop position. The driving movement is performed in the direction of the arrow x, and the looper line on the front end side of the movable cutter 50 is movable. The catching portion 50a also cannot smoothly hook the looper thread 10 between the vicinity of the front end of the looper 1 and the back side of the sewing material W, and the hooker thread 10 is hooked together with the needle thread 20a, 20b. The needle thread catching portion 50b of the movable cutter 50 is cut. The cut needle threads 20a and 20b are picked up above the needle plate 12 by a needle thread picking mechanism or the like as usual, and the cut looper thread 10 is freely positioned with respect to the thread hole at the tip end of the looper 1.

其結果，根據下一縫製時殘留於彎針1前端之線孔的彎針線10之長度，存在彎針線10會自彎針1之前端線孔脫散，無法形成線跡，即便能形成線跡亦會於縫紉起始部殘留較長之彎針線10從而使縫製物之品質、外觀惡化的問題(課題)。 As a result, according to the length of the looper thread 10 remaining in the thread hole at the tip end of the looper 1 at the time of the next sewing, the looper thread 10 is dissipated from the end line hole before the looper 1, and the stitch cannot be formed even if a stitch can be formed. There is also a problem that the long looper 10 remains in the sewing start portion, and the quality and appearance of the sewn product are deteriorated (problem).

本發明係鑒於上述各種情況而完成，其目的在於提供一種能利用自連獲得防綻線效果、且不會使自連後之彎針線之切斷處理及切斷後之彎針線之保持產生不良狀況、能使下一縫製按既定般確實地、且外觀良好地進行的附綻線防止裝置之雙環縫合縫紉機。 The present invention has been made in view of the above various circumstances, and an object of the present invention is to provide an anti-frozen line effect that can be obtained by self-connection without causing a problem that the hook line after the self-joining process is cut and the hook line is maintained. A double loop sewing machine capable of providing a fray line preventing device that can perform the next sewing as a predetermined and good appearance.

為了達成上述目的，本發明之附綻線防止裝置之雙環縫合縫紉機中，該雙環縫合縫紉機具備：針，其保持針線且上下活動；及彎針，其保持彎針線且能於與前述針之上下活動路徑大致正交之方向進退動作，且於進入動作時前述針捕捉形成於針板下之針線線環；利用該彎針所保持之彎針線使藉由前述彎針之進入動作捕捉之前述針線線環互連，藉此於縫製縫料上形成雙環縫合之線跡；該附有線跡綻線防止裝置之雙環縫合縫紉機具備：針線保持機構，其能相對於前述彎針進行接近及相離動作，於接近動作時使前述彎針所捕捉之針線線環保持於較前述針之下降位置靠前述彎針之進入端側；彎針線保持機構，其能相對於前述彎針進行接近及相離動作，於接近動作時使自前述彎針延伸至縫製縫料之彎針線保持於較前述針之下降位置靠前側或後側；及控制部，其以與前述針及彎針之動作、以及前述縫製縫料之送料動作相關聯地方式進行前述針線保持機構及前述彎針線保持機構之接近、相離動作之控制；該控制部於將前述彎針設於進入位置、將前述針設於上升位置而完成常規縫製後，使前述針線保持機構及前述彎針線保持機構進行接近動作而使前述針線線環保持於較前述針之下降位置靠前述彎針之進入端側的位置、且使彎針線保持於較前述針之下降位置靠前側或後側的位置，維持該狀態直至前述針穿過前述彎針所捕捉之針線線環而下降為止，其後，解除前述針線線環之前述位置保持，配合前述針之下降及上升、前述彎針之進退動作、及前述縫製縫料之送料動作而執行包括前述針穿過前述針線線環而下降之動作在內的至少1針量之縫製動作，藉此，利用前述針所保持之針線使前述彎針所保持之針線線環自連從而防止線跡綻線；該附有線跡綻線防止裝置之雙環縫合縫紉機具備：彎針線回拉力賦予裝置，其於前述自連後之前述彎針之進入動作時，鉤掛跨及且位於彎針線供給源裝置與前述彎針之間的彎針線部分且向側方移動，藉此，使前述彎針線部分彎折且向供給至前述彎針之彎針線部分賦予朝向前述彎針線供給源裝置側的回拉力。 In order to achieve the above object, in the double loop sewing machine of the fray line preventing device of the present invention, the double loop sewing machine includes: a needle that holds a needle thread and moves up and down; and a looper that holds the looper thread and can be placed above the needle The movement path is generally orthogonal to the direction of advancement and retreat, and the needle captures the needle thread loop formed under the needle plate during the entering operation; and the needle thread retained by the looper is used to capture the needle thread by the entering action of the looper The wire loop is interconnected to form a double loop stitching stitch on the sewing material; the double loop stitching sewing machine with the wire trace preventing device comprises: a needle thread holding mechanism capable of approaching and separating from the curved needle Keeping the needle thread loop caught by the curved needle in the lowering position than the aforementioned needle when approaching the action a curved needle holding mechanism capable of approaching and disengaging relative to the curved needle, and the bending thread extending from the curved needle to the sewing material is kept lower than the needle during the approaching movement a front side or a rear side of the position; and a control unit that performs the approach and the phase of the needle thread holding mechanism and the hook thread holding mechanism in association with the operation of the needle and the looper and the feeding operation of the sewing material The control unit controls the needle thread holding mechanism and the hook thread holding mechanism to perform the sewing operation after the bending needle is set at the entering position and the needle is set at the rising position to complete the conventional sewing. The ring is held at a position closer to the entry end side of the curved needle than the lowering position of the needle, and the hook line is held at a position closer to the front side or the rear side than the lowering position of the needle, and the state is maintained until the needle passes through the aforementioned When the needle thread loop caught by the looper is lowered, the position of the needle thread loop is released, and the needle is lowered and raised. a forwarding and retracting operation and a feeding operation of the sewing material to perform a sewing operation including at least one stitch of the needle passing through the needle thread loop, thereby making the bending by the needle thread held by the needle The needle thread loop held by the needle is self-connected to prevent the thread from being frayed; the double loop stitching sewing machine with the wire trace preventing device has: a looper returning force applying device, which is hooked across the portion of the looper line between the looper supply device and the looper, and moves to the side when the aforementioned looper enters the self-joining operation In this way, the looper wire portion is bent, and a looping force toward the looper wire supply source device side is given to the looper wire portion supplied to the looper.

根據具有如上所述之特徵構成的本發明之附綻線防止裝置之雙環縫合縫紉機，當將彎針設為進入狀態而結束常規縫製之後，使該彎針所捕捉之針線線環保持於較針之下降位置靠彎針之進入端側的位置，且使彎針線保持於較前述針之下降位置靠前側或後側的位置，維持該狀態直至前述針穿過前述彎針所捕捉之針線線環且下降為止，其後，解除前述針線線環之前述位置保持，進行包括前述針穿過前述針線線環且下降之動作在內的至少1針量之縫製動作，藉此，利用下降之針所保持之針線使前方的針線線環自連，以此自連部分擠壓彎針線，從而無論針線及彎針線之賦予張力的大小如何，皆能防止彎針線脫離，即便不進行加固針縫等防綻線專用之其他步驟作業，亦能防止線跡綻線。 According to the double-loop stitching sewing machine of the present invention, the double-loop stitching sewing machine having the feature of the above-described features, after the looper is set to the entry state and the conventional sewing is finished, the needle thread loop caught by the looper is kept at the needle The lowering position is at a position on the entry end side of the looper, and the looper thread is held at a position on the front side or the rear side of the lowering position of the needle, and the state is maintained straight. When the needle passes through the needle thread loop caught by the curved needle and descends, the position retention of the needle thread loop is released, and at least 1 is performed including the action of the needle passing through the needle thread loop and descending. The sewing operation of the needle amount, whereby the needle thread loop held by the falling needle is used to self-join the needle thread loop in front, thereby pressing the looper thread from the joint portion, so that regardless of the tension applied by the needle thread and the looper thread, It can prevent the looper from coming off, and it can prevent the thread from being frayed even if it is not subjected to other steps dedicated to the anti-friction line such as reinforcing the stitch.

另外，於自連之防綻線動作後之彎針之進入動作時，伴隨彎針線回拉力賦予裝置之作動，鉤掛跨及且位於彎針線供給源裝置與彎針之間的彎針線部分且向側方移動使其彎折，從而對該彎針線部分賦予朝向彎針線供給源裝置側的回拉力，藉此，能去除因於常規縫製結束後使彎針線保持於較前述針之下降位置靠前側或後側的位置、這一用以利用自連而防止綻線的不可缺少之動作而產生的彎針線之鬆弛。藉此，不會因自連後之彎針線之鬆弛而產生切斷不良及切斷後之彎針線保持之不良狀況，從而具有能使下一縫製按既定般確實地、且外觀良好地進行的效果。 In addition, when the looper is moved after the self-linking anti-frozen line operation, the looper is pulled back and the looper portion between the looper supply device and the looper is hooked up and the hook thread is pulled. The side portion is moved to be bent to provide a returning force toward the looper supply device side of the looper wire portion, whereby the hook thread can be removed from the lower needle position after the conventional sewing is completed. The position of the front side or the rear side, the slack of the looper thread generated by the indispensable action of preventing the fray by self-joining. Therefore, there is no problem that the cutting failure and the bending thread after the cutting are maintained due to the slack of the looper thread after the self-joining, and the effect that the next sewing can be performed as surely and with good appearance can be achieved. .

本發明之附綻線防止裝置之雙環縫合縫紉機較佳為於前述彎針線供給源裝置與前述彎針之間，設有導引跨及且位於兩者間的彎針線部分以大致直線狀進行移動的至少2個彎針線導引件，前述彎針線回拉力賦予裝置係由搖擺臂、彎針線鉤掛部及致動器構成，該搖擺臂能以靠近前述彎針線供給源裝置之位置為支點軸於水平或大致水平面往復搖擺於對向於前述彎針線導引件之位置與使彎針線部分彎折之側方位置，該彎針線鉤掛部安裝於該搖擺臂之前端部且鉤掛於前述2個彎針線導引件中之靠前述彎針線供給源裝置側之彎針線導引件的彎針線部分，該致動器驅動前述搖擺臂在前述兩個位置間往復搖擺。 Preferably, the double loop sewing machine of the attachment line preventing device of the present invention is provided between the hook line supply source device and the curved needle, and is provided with a guide cross and a portion of the looper line therebetween to move substantially linearly At least two looper guides, the looper pull-back force imparting device is composed of a swing arm, a hook thread hooking portion, and an actuator, and the swing arm can be a fulcrum shaft near a position of the looper supply device Reciprocating in a horizontal or substantially horizontal plane at a position opposite to the position of the hook line guide and bending the hook line portion, the hook line hook portion being attached to the front end of the swing arm and hooked to the foregoing One of the two looper guides on the looper line of the looper guide on the side of the looper supply source device, the actuator drives the shake The swing arm swings back and forth between the two positions described above.

此情況下，彎針線回拉力賦予裝置係由能於水平或大致水平面內繞支點軸往復搖擺的搖擺臂、及驅動該搖擺臂在兩個位置間往復搖擺的致動器構成，故結構上較為簡易，且能小型化地收容於縫紉機縫台部內之較小的水平空間。又，根據2個彎針線導引件與搖擺臂之位置關係，將彎針線部分的接近彎針線供給源裝置之側於前後方向以直線狀拉伸、且將靠近彎針之側於前後左右方向傾斜拉伸，藉此，能以搖擺臂之較少之搖擺量對彎針線賦予足以去除其鬆弛的回拉力。 In this case, the looper pull-back force imparting means is constituted by a swing arm that can reciprocate around the fulcrum axis in a horizontal or substantially horizontal plane, and an actuator that drives the swing arm to reciprocate between two positions, so that the structure is relatively It is simple and can be housed in a small horizontal space in the sewing machine bed. Further, according to the positional relationship between the two looper guides and the swing arm, the side of the looper wire portion close to the looper supply device is linearly stretched in the front-rear direction, and the side close to the looper is in the front, rear, left, and right directions. The tilting is stretched, whereby the looper can be given a pullback force sufficient to remove its slack with a small amount of rocking of the swing arm.

尤其是，作為前述彎針線回拉裝置中之致動器，較佳為由彈簧及流體壓力氣缸之組合構成，該彈簧對前述搖擺臂自與前述彎針線導引件對向之位置往前述側方位置進行往行搖擺彈壓，該流體壓力氣缸抵抗該彈簧之彈壓力而對前述搖擺臂自前述側方位置往與前述彎針線導引件對向之位置進行返行搖擺驅動。 In particular, the actuator in the looper thread pullback device is preferably composed of a combination of a spring and a fluid pressure cylinder, the spring facing the swing arm from a position opposite to the looper guide The square position is swayed and swayed, and the fluid pressure cylinder resists the spring pressure to sway the swing arm from the lateral position to the position opposite the hooker guide.

此情況下，能有效利用彈簧之彈力，根據彎針線之鬆弛程度而賦予適當的彎針線回拉力，能防止對彎針線作用有異常的回拉力(張力)、或是能防止因回拉力不足所致之切斷不良或切斷後之彎針線保持產生不良狀況。 In this case, the elastic force of the spring can be effectively utilized, and the appropriate looper pullback force can be given according to the degree of slack of the looper thread, thereby preventing an abnormal pull-back force (tension) acting on the looper thread, or preventing the pull-back force from being insufficient. The needle thread that has been cut off or cut off remains in a bad condition.

又，本發明之附綻線防止裝置之雙環縫合縫紉機較佳為前述控制部於用於前述自連之前述至少1針量的縫製動作時的前述縫製縫料之送料之停止、或小於常規縫製時之送料量之送料動作下執行。 Further, in the double-loop stitching sewing machine according to the present invention, it is preferable that the control unit stops the feed of the sewing material at the time of the sewing operation for the self-joining of at least one stitch, or is smaller than the conventional sewing. The feeding action of the feeding amount is executed under the feeding action.

此情況下，能使自連部分變得緊密而強化自連部分對彎針線之擠壓，從而能進一步鞏固防止縫紉終端部分之彎針線之脫散及該脫散波及而造成之綻線的效果。 In this case, the self-joining portion can be made tight and the self-joining portion can be squeezed against the looper thread, thereby further consolidating the breakage of the looper thread at the sewing end portion and the detachment wave. And the effect of the fray.

又，本發明之附綻線防止裝置之雙環縫合縫紉機較佳為前述彎針線保持機構能與前述針線保持機構一體地相對於前述彎針進行接近及相離動作。 Further, in the double loop sewing machine according to the present invention, it is preferable that the looper thread holding mechanism can perform the approaching and the separating operation with respect to the looper integrally with the needle thread holding mechanism.

此情況下，能將針線保持機構之驅動機構兼用作彎針保持機構之驅動機構，故能使防綻線裝置全體之構成儘量小型簡化且低成本化。 In this case, since the drive mechanism of the needle thread holding mechanism can also be used as the drive mechanism of the looper holding mechanism, the entire configuration of the anti-frozen line device can be simplified as small as possible and reduced in cost.

再者，本發明之雙環縫合縫紉機適合以橫筒形雙環縫合縫紉機作為對象，但亦能以橫筒形以外之一針雙環縫合縫紉機或平縫式雙環縫合縫紉機作為對象縫紉機。 Further, the double-loop stitching sewing machine of the present invention is suitable for a horizontal cylindrical double-loop stitching sewing machine, but it is also possible to use a one-needle double-loop stitching sewing machine or a flat-seam double-loop stitching sewing machine as a target sewing machine.

1‧‧‧彎針 1‧‧‧bend needle

2a、2b‧‧‧針 2a, 2b‧‧ needle

3‧‧‧掛線鉤 3‧‧‧ hanging hook

4‧‧‧止動構件 4‧‧‧stop members

6‧‧‧彎針線保持體 6‧‧‧Hose thread retaining body

8‧‧‧控制部 8‧‧‧Control Department

10‧‧‧彎針線 10‧‧‧Hose thread

10a‧‧‧彎針線部分 10a‧‧‧Hose thread section

12‧‧‧針板 12‧‧‧ needle board

20a、20b‧‧‧針線 20a, 20b‧‧ needles

20a1、20b1‧‧‧針線部 20a1, 20b1‧‧‧ Needle Department

20a2、20b2‧‧‧針線線環 20a2, 20b2‧‧‧ needle thread loop

84‧‧‧彎針線回拉力賦予裝置 84‧‧‧bending line back tensioning device

150、150a、150b‧‧‧彎針線導引件 150, 150a, 150b‧‧‧ looper guides

151‧‧‧支點軸 151‧‧‧ pivot shaft

152‧‧‧搖擺臂 152‧‧‧Swing arm

153‧‧‧致動器 153‧‧‧ actuator

153a‧‧‧彈簧 153a‧‧ ‧ spring

153b‧‧‧伸縮流體壓力氣缸 153b‧‧‧Flexible fluid pressure cylinder

154‧‧‧彎針線鉤掛部 154‧‧‧Hose thread hook

A‧‧‧落針位置 A‧‧‧ needle drop position

B‧‧‧縫紉機縫台部 B‧‧‧Sewing machine sewing machine

M‧‧‧雙環縫合之線跡 M‧‧‧ Double-loop stitching stitch

H‧‧‧防綻線裝置 H‧‧‧Anti-fragment line device

W‧‧‧縫製縫料 W‧‧‧Sewing sewing material

圖1係以卸除縫紉機縫台部之上罩之狀態顯示本發明之實施形態之橫筒形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 horizontal tubular double-loop sewing machine according to an embodiment of the present invention in a state in which the upper cover of the sewing machine sewing machine portion is removed.

圖2係圖1之主要部分之放大立體圖。 Figure 2 is an enlarged perspective view of the main part of Figure 1.

圖3係顯示該橫筒形雙環縫合縫紉機中之線跡綻線防止裝置之主要部分之構成的立體圖。 Fig. 3 is a perspective view showing the configuration of a main portion of the wire fray preventing device in the horizontal cylindrical double-loop sewing machine.

圖4係顯示卸除該線跡綻線防止裝置之主要部分之構成之一部分的狀態的立體圖。 Fig. 4 is a perspective view showing a state in which a part of the configuration of the main portion of the thread fray preventing device is removed.

圖5係顯示該線跡綻線防止裝置之主要部分之構成的俯視圖。 Fig. 5 is a plan view showing the configuration of a main portion of the thread fray preventing device.

圖6係對於該線跡綻線防止裝置之止動機構之構成及第1動作進行說明的主要部分之仰視圖。 Fig. 6 is a bottom view of a main portion for explaining a configuration of a stopper mechanism of the thread fray preventing device and a first operation.

圖7係對於該止動機構之構成及第2動作進行說明的主要部分之仰視圖。 Fig. 7 is a bottom view of the main part explaining the configuration and the second operation of the stopper mechanism Figure.

圖8係對於該止動機構之構成及第3動作進行說明的主要部分之仰視圖。 Fig. 8 is a bottom view of a main portion for explaining the configuration of the stopper mechanism and the third operation.

圖9係對於該止動機構之構成及第4動作進行說明的主要部分之仰視圖。 Fig. 9 is a bottom view of a main portion for explaining the configuration of the stopper mechanism and the fourth operation.

圖10係對於橫筒形雙環縫合縫紉機中之切線裝置之往復驅動移動機構之構成進行說明的分解立體圖。 Fig. 10 is an exploded perspective view showing the configuration of a reciprocating drive moving mechanism of the tangential device in the horizontal tubular double loop sewing machine.

圖11顯示藉由該往復驅動移動機構使切線裝置後退至退避位置的狀態，(A)為主要部分之俯視圖，(B)為沿圖11(A)之A-A線之縱剖面圖。 Fig. 11 shows a state in which the tangential device is retracted to the retracted position by the reciprocating drive moving mechanism, (A) is a plan view of a main portion, and (B) is a longitudinal sectional view taken along line A-A of Fig. 11(A).

圖12係顯示藉由該往復驅動移動機構使切線裝置進入至進入位置的狀態，且係該線跡綻線防止裝置之第1防綻線動作之說明圖。 Fig. 12 is an explanatory view showing a state in which the tangential device is brought into the entry position by the reciprocating drive moving mechanism, and is a first fray line operation of the wire fray preventing device.

圖13係顯示本發明之實施形態之彎針線回拉力賦予裝置之構成及常規之縫製時之狀態的主要部分之放大俯視圖。 Fig. 13 is an enlarged plan view showing a main part of a configuration of a looper thread pulling force applying device according to an embodiment of the present invention and a state at the time of conventional sewing.

圖14係顯示本發明之實施形態之彎針線回拉力賦予裝置之構成及彎針線回拉動作狀態的主要部分之放大俯視圖。 Fig. 14 is an enlarged plan view showing a main part of a configuration of a looper return force applying device and a looper pullback operation state according to an embodiment of the present invention.

圖15係顯示包含線跡綻線防止裝置在內之第一實施形態之橫筒形雙環縫合縫紉機之控制系統之構成的方塊圖。 Fig. 15 is a block diagram showing the configuration of a control system of a horizontal cylindrical double-loop sewing machine according to the first embodiment including a thread fray preventing device.

圖16係以時間序列顯示用於防止該線跡綻線之控制部的動作內容的時序圖。 Fig. 16 is a timing chart showing the operation contents of the control unit for preventing the line fray from being time-series.

圖17係該線跡綻線防止裝置之第1防綻線動作之說明圖。 Fig. 17 is an explanatory diagram of the first anti-friction line operation of the thread fray preventing device.

圖18係該線跡綻線防止裝置之第2防綻線動作之說明圖。 Fig. 18 is an explanatory diagram of the second anti-friction line operation of the thread fray preventing device.

圖19係自與圖18相反之方向觀察圖18之動作狀態的主要部分之放大立體圖。 Figure 19 is an enlarged view of the main part of the operation state of Figure 18 as seen from the direction opposite to Figure 18. Stereo picture.

圖20係該線跡綻線防止裝置之第3防綻線動作之說明圖。 Fig. 20 is an explanatory diagram of the third anti-friction line operation of the thread fray preventing device.

圖21係該線跡綻線防止裝置之第4防綻線動作之說明圖。 Fig. 21 is an explanatory diagram of the fourth anti-friction line operation of the thread fray preventing device.

圖22係該線跡綻線防止裝置之第5防綻線動作之說明圖。 Fig. 22 is an explanatory view showing a fifth fray line operation of the thread fray preventing device;

圖23(a)~(f)係依序說明切線裝置之切線動作的主要部分之立體圖。 23(a) to (f) are perspective views showing the main parts of the tangential operation of the tangential device in order.

圖24係自與圖23相反之方向觀察圖23(a)之狀態的主要部分之放大立體圖。 Fig. 24 is an enlarged perspective view showing a main portion of the state of Fig. 23(a) as seen from the direction opposite to Fig. 23.

圖25係自與圖23相反之方向觀察圖23(c)之狀態的主要部分之放大立體圖。 Fig. 25 is an enlarged perspective view showing the main part of the state of Fig. 23(c) as seen from the direction opposite to Fig. 23.

圖26係自縫製縫料之背面觀察本發明之實施形態之橫筒形雙環縫合縫紉機的雙環縫合之線跡之構造的圖。 Fig. 26 is a view showing the structure of a double-loop stitching stitch of a horizontal cylindrical double-loop stitch sewing machine according to an embodiment of the present invention as seen from the back side of the sewing material.

圖27係大致顯示一般的雙環縫合之縫紉終端部分之線跡之構成的仰視圖。 Fig. 27 is a bottom plan view showing the configuration of a stitch of a sewing terminal portion of a general double loop stitching.

圖28係大致顯示本申請人之先前技術中的線跡綻線防止裝置之主要部分之構成的俯視圖。 Fig. 28 is a plan view schematically showing the configuration of a main portion of the stitch fray preventing device of the prior art of the applicant.

圖29係對於本申請人之先前技術中的線跡綻線防止裝置之主要部分之動作狀態進行說明的俯視圖。 Fig. 29 is a plan view for explaining an operation state of a main portion of the stitch fray preventing device in the prior art of the present applicant.

圖30係自縫製縫料之背面觀察藉由本申請人之先前技術中的線跡綻線防止裝置而得之雙環縫合之線跡之構造的圖。 Fig. 30 is a view showing the construction of a double loop stitching stitch obtained by the stitching preventing device of the prior art of the applicant from the back side of the sewing material.

圖31係顯示本申請人之先前技術中的與圖24對應之狀態的主要部分之放大立體圖。 Fig. 31 is an enlarged perspective view showing the main part of the state corresponding to Fig. 24 in the prior art of the applicant.

圖32係顯示本申請人之先前技術中的與圖25對應之狀態的主要部分之放大立體圖。 Fig. 32 is an enlarged perspective view showing the main part of the state corresponding to Fig. 25 in the prior art of the applicant.

以下，根據圖式對本發明之實施形態進行說明。再者，對於本實施形態中之與本申請人之先前技術中的雙環縫合縫紉機相同的構成標注相同符號進行說明。 Hereinafter, embodiments of the present invention will be described based on the drawings. In the present embodiment, the same components as those of the prior art double-loop stitching sewing machine of the present applicant will be denoted by the same reference numerals.

圖1係以卸除縫紉機縫台部之上罩之狀態顯示本發明之實施形態之橫筒形雙環縫合縫紉機整體的外觀立體圖，圖2係圖1之主要部分之放大立體圖，圖3及圖4係顯示該橫筒形雙環縫合縫紉機所配備之線跡綻線防止裝置之主要部分之構成的立體圖，圖5係顯示該線跡綻線防止裝置之主要部分之構成的俯視圖，圖6至圖9係對於防綻線裝置之止動機構之構成及第1~第4動作進行說明的主要部分之仰視圖。 Fig. 1 is a perspective view showing the overall appearance of a horizontal cylindrical double-loop sewing machine according to an embodiment of the present invention in a state in which the upper cover of the sewing machine is removed, and Fig. 2 is an enlarged perspective view of a main part of Fig. 1, Fig. 3 and Fig. 4 A perspective view showing a configuration of a main portion of the wire fray preventing device provided in the horizontal cylindrical double-loop sewing machine, and FIG. 5 is a plan view showing a configuration of a main portion of the wire fray preventing device, and FIGS. 6 to 9 The bottom view of the main part explaining the configuration of the stopper mechanism of the anti-frozen line device and the first to fourth operations.

又，圖10係對於橫筒形雙環縫合縫紉機之切線裝置中的往復驅動移動機構之構成進行說明的分解立體圖，圖11顯示藉由該往復驅動移動機構使切線裝置後退至退避位置的狀態，圖11(A)為主要部分之平面圖，圖11(B)為沿圖11(A)之A-A線之縱剖面圖，圖12顯示藉由該往復驅動移動機構使切線裝置進入至進入位置、可動切刀往行驅動移動至最左方為止的狀態，圖12(A)為主要部分之俯視圖，圖12(B)為沿圖12(A)之B-B線之縱剖面圖。 10 is an exploded perspective view for explaining a configuration of a reciprocating drive moving mechanism in a thread cutting device of a horizontal tubular double-loop sewing machine, and FIG. 11 is a view showing a state in which the thread cutting device is retracted to a retracted position by the reciprocating driving mechanism. 11(A) is a plan view of a main portion, FIG. 11(B) is a longitudinal sectional view taken along line AA of FIG. 11(A), and FIG. 12 shows that the tangential device is moved to an entry position by the reciprocating driving mechanism, and is movable Fig. 12(A) is a plan view of a main portion, and Fig. 12(B) is a longitudinal sectional view taken along line BB of Fig. 12(A).

再者，以下之說明中，使用圖3~圖5及圖10~圖12中以箭頭所示之「左、右」及「前、後」等表現進行說明。此處，「前」係靠近縫製作業者之側，「後」係遠離縫製作業者之側，「左、右」係自靠近縫製作業者之前側觀察時的「左、右」。 In the following description, the expressions "left, right" and "front and back" indicated by arrows in FIGS. 3 to 5 and 10 to 12 will be described. Here, the "front" is close to the side of the sewing operator, the "back" is away from the side of the sewing operator, and the "left and right" are sewn from the side. "Left and right" when the operator observes the front side.

如圖1及圖2所示，本實施形態之橫筒形雙環縫合縫紉機中，縫紉機臂部C及縫紉機縫台部B彼此大致平行狀地自縫紉機本體部D之上下位置向左方延伸設置。於縫紉機臂部C之內部，組裝有傳動旋轉軸、使左右之針2a、2b上下往復運動之針驅動機構、使壓布構件上下往復運動之按壓驅動機構或其等各驅動機構之動力傳輸機構等，但因其等驅動機構或動力傳輸機構係眾所周知者，故省略說明。 As shown in Fig. 1 and Fig. 2, in the horizontal tubular double-loop sewing machine of the present embodiment, the sewing machine arm portion C and the sewing machine sewing machine portion B extend leftward from the upper and lower positions of the sewing machine main body portion D substantially in parallel with each other. Inside the sewing machine arm portion C, a needle drive mechanism for transmitting the rotation shaft of the drive, reciprocating the left and right needles 2a, 2b, a push drive mechanism for reciprocating the press member up and down, or a power transmission mechanism of each of the drive mechanisms However, since the drive mechanism or the power transmission mechanism is well known, the description is omitted.

又，橫筒形雙環縫合縫紉機如圖5所示，具備彎針1、左右之針2a、2b(參照圖17~圖23)、安裝於縫紉機縫台部B之上表面之針板台11、配設於該針板台11之線跡綻線防止裝置H、安裝於前述針板台11上之針板12、及彎針線回拉力賦予裝置84。 Further, as shown in Fig. 5, the horizontal tubular double-loop sewing machine includes a looper 1, left and right needles 2a and 2b (see Figs. 17 to 23), and a needle board table 11 attached to the upper surface of the sewing machine bed portion B. The thread fray preventing device H disposed on the needle plate stage 11 , the needle plate 12 attached to the needle plate stage 11 , and the looper return force applying device 84 .

於前述針板12之下方部之縫紉機縫台部B內組裝有往復驅動移動機構70等，該往復驅動移動機構70等使保持彎針線10且於與前述針2a、2b之上下往復運動路徑大致正交的左右方向進行進退動作的彎針1、切線裝置5及該切線裝置5之固定切刀51之刀緣部51e在進入位置P1與退避位置P2之間往復驅動移動，且於切線裝置5已移動至前述進入位置P1之狀態下僅使後述之可動切刀50沿x-y方向在靠落針位置之一側(右側)之外部位置與靠另一側(左側)之外部位置之間線性地往復驅動移動，該進入位置P1如圖11(A)、(B)所示般係接近前述針板12及彎針1的位置、且朝後述之擋止構件34抵接於後述之止動構件33的左前方的位置，該退避位置P2如圖12(A)、(B)所示較前述進入位置P1位於右後方。 A reciprocating drive moving mechanism 70 or the like is incorporated in the sewing machine sewing machine portion B of the lower portion of the needle plate 12, and the reciprocating driving mechanism 70 or the like holds the looper thread 10 and reciprocates the upper and lower reciprocating paths with the needles 2a and 2b. The curved needle 1, the thread cutting device 5, and the knife edge portion 51e of the fixed cutter 51 of the thread cutting device 5 are reciprocally driven to move between the entering position P1 and the retracting position P2 in the orthogonal left and right direction, and are in the thread cutting device 5 Only the movable cutter 50, which will be described later, is linearly moved between the outer position on the one side (right side) of the needle drop position and the outer position on the other side (left side) in the xy direction in the state of moving to the aforementioned entry position P1. When the reciprocating drive is moved, the entry position P1 approaches the position of the needle plate 12 and the looper 1 as shown in Figs. 11(A) and (B), and the stopper member 34 to be described later abuts against a stopper member to be described later. The position of the left front of 33 is located at the right rear side of the entry position P1 as shown in Figs. 12(A) and (B).

前述左右之針2a、2b安裝於與縫紉機臂部C內之傳動旋轉軸(省略圖示)之旋轉連動地上升及下降的針棒(省略圖示)之下端部。圖3、圖5中之A、A表示針2a、2b之落針位置(下降位置)。落針位置A、A係於左右方向隔開間隔地設定於針板12之大致中央部。 The left and right needles 2a, 2b are attached to the drive rotation in the arm portion C of the sewing machine. The lower end of the needle bar (not shown) which is raised and lowered by the rotation of the shaft (not shown). A and A in Figs. 3 and 5 indicate the needle drop position (down position) of the needles 2a and 2b. The needle drop positions A and A are set at substantially the center of the needle plate 12 at intervals in the left-right direction.

彎針1透過配置於縫紉機縫台部B內且省略圖示之彎針驅動機構之動作而與針2a、2b之上下往復運動路徑大致正交地於該等針2a、2b之排列方向進行進退(左進及右退)動作。圖5之實線顯示彎針1於左進位置動作之狀態，圖5之虛線顯示彎針1於右退位置動作之狀態。如圖5之實線所示，位於左進位置之彎針1之前端部超過落針位置A、A而向左方向延伸出，如圖5之虛線所示，位於右退位置之彎針1之前端部位於落針位置A、A之右方向且與其相離。 The looper 1 is moved forward and backward in the direction in which the needles 2a and 2b are arranged substantially perpendicularly to the upper and lower reciprocating paths of the needles 2a and 2b by the operation of the looper driving mechanism disposed in the sewing machine bed portion B and not shown. (Left and right) actions. The solid line in Fig. 5 shows the state in which the looper 1 is operated at the leftward position, and the broken line in Fig. 5 shows the state in which the looper 1 is operated at the rightward position. As shown by the solid line in Fig. 5, the front end of the looper 1 at the left-in position extends beyond the needle drop position A, A, and extends to the left, as shown by the broken line in Fig. 5, the looper 1 in the right retracted position. The front end is located in the right direction of the needle drop positions A, A and is separated therefrom.

橫筒形雙環縫合縫紉機藉由針2a、2b之上升及下降動作與彎針1之左進及右退動作對設於針板12上之縫製縫料(省略圖示)進行縫製。縫製縫料藉由壓布構件被擠壓於針板12上，且藉由設於縫紉機縫台B內部之送料機構之動作而向圖5之箭頭Y方向送料移動。送料機構具有送料齒，該送料齒反復進行突出於針板12上且向後方向移動、沒入至針板12下且向前方向復位移動的動作，藉由該送料齒使縫製縫料間歇性地向箭頭Y方向送料移動。 The horizontal tubular double-loop sewing machine sewn the sewing material (not shown) provided on the needle board 12 by the raising and lowering movement of the needles 2a and 2b and the leftward and rightward movements of the looper 1. The sewing material is pressed against the needle plate 12 by the pressing member, and is fed and moved in the direction of the arrow Y in Fig. 5 by the operation of the feeding mechanism provided inside the sewing machine bed B. The feeding mechanism has feeding teeth which repeatedly move on the needle plate 12 and move backwards, immersed in the needle plate 12 and move in the forward direction, and the sewing material intermittently moves the sewing material by the feeding teeth. Feed the movement in the direction of the arrow Y.

上述針棒、彎針驅動機構及送料機構係藉由來自傳動旋轉軸(省略圖示)之傳動而彼此同步地動作的公知之機構。針2a、2b保持針線20a、20b(參照圖17~圖23)且穿過縫製縫料到達針板12下，此後，上升且向縫製縫料之上方穿出。彎針1保持彎針線10(參照圖17~圖23)且配合針2a、2b之上升開始而左進，捕捉形成於針板12下之針線20a、20b之線環20a2、20b2。於針2a、2b之上升時，縫製縫料送料移動。針2a、2b穿過送料移動之縫製縫料而下降，捕捉右退中之彎針1所保持的彎針線10。雙環縫合縫紉機反復進行以上之動作，從而於縫製縫料形成雙環縫合之線跡。 The needle bar, the looper drive mechanism, and the feed mechanism are known mechanisms that operate in synchronization with each other by a drive from a drive shaft (not shown). The needles 2a and 2b hold the needle threads 20a and 20b (see Figs. 17 to 23) and pass through the sewing material to reach the needle plate 12, and thereafter, ascend and pass over the sewing material. The looper 1 holds the looper thread 10 (see FIGS. 17 to 23) and the leftward advancement of the engagement of the needles 2a and 2b, and captures the needle thread 20a, 20b formed under the needle plate 12. Wire loops 20a2, 20b2. When the needles 2a, 2b are raised, the sewing material feed moves. The needles 2a, 2b are lowered by the sewing material which is moved by the feed, and the looper thread 10 held by the looper 1 in the right retraction is caught. The double loop stitching sewing machine repeatedly performs the above operations, thereby forming a double loop stitching stitch on the sewing material.

以下，首先對如上所述橫筒形雙環縫合縫紉機所配備之線跡綻線防止裝置H進行詳細敘述。防綻線裝置H具備針線保持機構、彎針線保持機構、止動機構、連動連結前述針線保持機構之掛線鉤3(於後敘述)與前述止動機構之止動構件4(於後敘述)的作為連結構件之連結棒35、及控制部8(於後敘述)。 Hereinafter, the stitch fray preventing device H provided in the horizontal cylindrical double loop sewing machine as described above will be described in detail first. The anti-frozen line device H includes a needle thread holding mechanism, a looper thread holding mechanism, a stopper mechanism, a hook hook 3 (described later) that interlocks the needle thread holding mechanism, and a stopper member 4 of the stopper mechanism (described later). The connecting rod 35 as a connecting member and the control unit 8 (described later).

前述針線保持機構具有掛線鉤3及往復活動式線操作氣缸32，該往復活動式線操作氣缸32使該掛線鉤3於遠離前述彎針1之待機位置與接近前述彎針1之掛線位置之間以上下方向之支軸30為中心而驅動搖擺。作為掛線鉤3之搖擺中心的支軸30配置於針板12之右後側角部之近旁，且支撐於前述針板台11上。 The needle thread holding mechanism has a hook hook 3 and a reciprocating wire operating cylinder 32. The reciprocating wire operating cylinder 32 causes the hook hook 3 to be in a standby position away from the looper 1 and a line close to the looper 1 The fulcrum is driven centered on the support shaft 30 between the positions in the up and down direction. A support shaft 30 as a swing center of the hook hook 3 is disposed in the vicinity of the right rear corner portion of the needle plate 12, and is supported by the needle board table 11.

掛線鉤3具有圓弧狀之彎曲形狀，且係以向前方折回之方式連設於自支軸30向左方延伸的支撐臂3e之前端部。掛線鉤3之前端部於針板12之下側、自左側後方臨近落針位置A、A，且於該前端部形成有朝外側突出之鉤部3b。支撐臂3e具有自支軸30向前方延伸之延設部3c，於該延設部3c之前端部連結有連結棒35之一端部。 The hook hook 3 has an arc-shaped curved shape and is connected to the front end portion of the support arm 3e extending leftward from the support shaft 30 so as to be folded back. The front end of the hook hook 3 is adjacent to the lower side of the needle plate 12, and is adjacent to the needle drop positions A and A from the left rear side, and a hook portion 3b that protrudes outward is formed at the front end portion. The support arm 3e has an extended portion 3c extending forward from the support shaft 30, and one end portion of the connecting rod 35 is coupled to the end portion of the extended portion 3c.

如圖5所示，於前述掛線鉤3之基部，作為彎針線保持機構之具有圓弧狀之彎曲形狀的彎針線保持體6透過兩根固定螺絲60、60而共同緊固固定。彎針線保持體6之前端部大致沿前述掛線鉤3之左側向前方延伸，於掛線鉤3之前端部之前位置臨近落針位置A、A。於彎針線保持體6之前端部，形成有分支成二股之彎針線承接部6a。彎針線保持體6構成為能藉由擰鬆固定螺絲60、60而調節相對於掛線鉤3之位置，藉由該位置調節，前端之彎針線承接部6a對彎針線10之保持變得更確實。 As shown in FIG. 5, at the base of the hook hook 3, the looper wire retaining body 6 having a curved arc shape as a looper holding mechanism is fastened and fixed by the two fixing screws 60 and 60. The front end of the looper thread retaining body 6 is substantially along the left side of the aforementioned hook hook 3 Extending, the position before the end of the hook hook 3 is adjacent to the needle drop positions A, A. At the front end portion of the looper thread holding body 6, a looper thread receiving portion 6a branched into two strands is formed. The looper thread holding body 6 is configured to be able to adjust the position with respect to the hook hook 3 by loosening the fixing screws 60, 60. By this position adjustment, the looper thread receiving portion 6a of the front end maintains the looper thread 10 more. indeed.

前述止動機構如圖6~圖9所示由如下構件構成：止動構件14，其透過固定螺絲36固定於前述線操作氣缸32之輸出棒31之前端部(左端部)，且藉由利用透過空氣管33供給之作動空氣使線操作氣缸32進行伸縮動作而於左右方向線性地往復驅動移動；搖擺桿9，其能卡合於該止動構件14之一部分且能解除該卡合；彈簧96，其使該搖擺桿9卡合於前述止動構件14之一部分且向使前述掛線鉤3位於待機位置之方向進行搖擺彈壓；及單向活動式(向左方向之擠出驅動式)止動氣缸42，其抵抗該彈簧96之搖擺彈壓力而強制性地解除前述搖擺桿9對前述止動構件14之一部分之卡合。 As shown in FIGS. 6 to 9, the stopper mechanism is composed of a stopper member 14 which is fixed to the front end portion (left end portion) of the output rod 31 of the wire operating cylinder 32 via a fixing screw 36, and is utilized by The actuating air supplied through the air tube 33 causes the linear operation cylinder 32 to perform a telescopic operation and linearly reciprocally drives the movement in the right and left direction; the swing lever 9 is engageable with a portion of the stopper member 14 and can release the engagement; 96, the swinging rod 9 is engaged with one of the stopper members 14 and swinging and biasing in a direction in which the hooking hook 3 is in a standby position; and a one-way movable type (extruding driving in the left direction) The retaining cylinder 42 forcibly releases the engagement of the rocking lever 9 with respect to one of the stopper members 14 against the rocking spring pressure of the spring 96.

前述止動氣缸42之輸出棒41構成為利用透過空氣管43供給之作動空氣使止動氣缸42向左方向擠出驅動，隨之，使前述搖擺桿9抵抗前述彈簧96之搖擺彈壓力而向逆時針方向搖擺。 The output rod 41 of the above-described stop cylinder 42 is configured to drive the stop cylinder 42 to the left direction by the actuating air supplied through the air tube 43, and accordingly, the swing lever 9 is biased against the swing pressure of the spring 96. Swing counterclockwise.

搖擺桿9係以能以上下方向之支軸90為中心搖擺之方式支撐於搖擺桿安裝台92之上表面。搖擺桿9之前端部具有能卡合於前述止動構件14之一部分的卡合爪9a，且如圖6所示，當藉由線操作氣缸32(參照圖4)之擴展動作使前述止動構件14向左方向驅動移動時、亦即、掛線鉤3移動至待機位置時，藉由彈簧96之彈壓力而接觸於止動構件14之側部，當藉由線操作氣缸32之收縮動作使前述止動構件14向右方向驅動移動時，如圖7所示，藉由彈簧96之彈壓力使搖擺桿9以支軸90為中心向順時針方向搖擺而成為前端之卡合爪9a能卡合於止動構件14之一部分的狀態。 The rocking lever 9 is supported on the upper surface of the rocking beam mounting base 92 so as to swing around the support shaft 90 in the up-and-down direction. The front end portion of the swing lever 9 has an engaging claw 9a engageable with a portion of the stopper member 14, and as shown in Fig. 6, the above-described stop is performed by the expansion operation of the wire operating cylinder 32 (refer to Fig. 4) When the member 14 is driven to move in the left direction, that is, when the hook hook 3 is moved to the standby position, the side portion of the stopper member 14 is contacted by the spring pressure of the spring 96, and the contraction action of the cylinder 32 is performed by the wire. When the stopper member 14 is driven to move in the right direction, As shown in FIG. 7, the swing lever 9 is rocked clockwise about the support shaft 90 by the spring pressure of the spring 96, and the engagement claw 9a of the front end can be engaged with one of the stopper members 14.

又，如圖8所示，使收縮之線操作氣缸32(參照圖4)再次少量地進行擴展動作，藉此，使搖擺桿9之前端之卡合爪9a卡合於止動構件14之一部分，從而使止動構件14之向左方向之驅動移動暫時停止。於如此使止動構件14暫時停止之狀態下，前述掛線鉤3透過連結棒35移動至前述待機位置與掛線位置之間的保持位置且停止於此。此時，掛線鉤3之前端之鉤部3b自圖5所示之掛線位置(落針位置A、A)向左後方移動，從而鉤掛針線20a、20b且將其保持於前述保持位置。 Further, as shown in FIG. 8, the contraction line operation cylinder 32 (see FIG. 4) is again slightly expanded, whereby the engagement claw 9a at the front end of the swing lever 9 is engaged with a part of the stopper member 14. Thereby, the driving movement of the stopper member 14 in the leftward direction is temporarily stopped. In a state in which the stopper member 14 is temporarily stopped in this manner, the hook hook 3 is moved to the holding position between the standby position and the hanging position through the connecting rod 35 and is stopped. At this time, the hook portion 3b at the front end of the hook hook 3 is moved to the left rearward from the hook position (the needle drop position A, A) shown in FIG. 5, thereby hooking the needle thread 20a, 20b and holding it in the aforementioned holding position. .

進而，如圖9所示，伴隨止動氣缸42之擴展而使輸出棒41向左方向擠出、驅動，藉此，使前述搖擺桿9抵抗前述彈簧96之搖擺彈壓力而向逆時針方向搖擺，以解除該搖擺桿9之前端之卡合爪9a對止動構件14之一部分之卡合，從而解除止動構件14之暫時停止。藉此，線操作氣缸32最大限度地進行擴展動作從而使掛線鉤3透過連結棒35搖擺復位至待機位置。 Further, as shown in FIG. 9, the output rod 41 is pushed and driven in the left direction as the stop cylinder 42 expands, whereby the swing lever 9 is swung counterclockwise against the swing spring pressure of the spring 96. The engagement of the engaging claw 9a at the front end of the swing lever 9 with respect to one of the stopper members 14 is released, and the temporary stop of the stopper member 14 is released. Thereby, the wire operating cylinder 32 maximizes the expansion operation, and the hook hook 3 is rocked and returned to the standby position by the connecting rod 35.

如上所述，本實施形態中，針線保持機構之掛線鉤3藉由線操作氣缸32及止動氣缸42之伸縮動作而於前述待機位置、掛線位置及保持位置之間搖擺。 As described above, in the present embodiment, the hook hook 3 of the needle thread holding mechanism swings between the standby position, the hanging position, and the holding position by the telescopic operation of the wire operating cylinder 32 and the stopping cylinder 42.

又，本實施形態之橫筒形雙環縫合縫紉機中，安裝於縫紉機縫台部B之上表面的針板台11係如圖3~圖5所示，採用分割為左側針板台部11L與右側針板台部11R該兩部分之構成。前述針板12透過固定螺絲100以能脫卸之方式安裝於左側針板台部11L之上表面，且支撐於作為前述針線保持機構之掛線鉤3之搖擺中心的支軸30。 Further, in the horizontal cylindrical double-loop sewing machine of the present embodiment, the needle plate table 11 attached to the upper surface of the sewing machine sewing machine portion B is divided into the left needle plate base portion 11L and the right side as shown in Figs. 3 to 5 . The needle plate base portion 11R is composed of the two parts. The needle plate 12 is detachably attached to the upper surface of the left needle plate base portion 11L via the fixing screw 100, and is supported as the aforementioned The support shaft 30 of the swing center of the hook hook 3 of the needle thread holding mechanism.

於該分割為兩部分之左側針板台部11L的左端部附近之前後複數處(2處)、具體而言為圖5中之假想線所示之縫紉機臂部C之前端(左端)近旁的與前述針板12之安裝部位相離的部位，形成有螺孔101，左側針板台部11L經由螺合於該等螺孔101之固定螺絲構件102而以能緊固固定且能解除固定(可裝卸)之方式安裝於縫紉機縫台部B之上表面。 In the vicinity of the left end portion of the left needle plate base portion 11L divided into two parts, the front end (two places), specifically, the front end (left end) of the sewing machine arm portion C shown by the imaginary line in Fig. 5 A screw hole 101 is formed in a portion away from the mounting portion of the needle plate 12, and the left needle plate base portion 11L is fastened and fixed by being fixed to the fixing screw member 102 of the screw hole 101 ( It is attached to the upper surface of the sewing machine sewing machine part B in a detachable manner.

又，於縫紉機縫台部B之上表面及前述左側針板台部11L，如圖4所示，在偏離前述固定螺絲構件102之2個部位之緊固固定部位之處，形成有定位銷103、及供該定位銷103嵌合之銷孔104，藉由使銷孔104自上方***且嵌合於定位銷103，使左側針板台部11L相對於縫紉機縫台部B定位於既定的位置及姿勢，於該狀態下，藉由將前述固定螺絲構件102擰入至螺孔101，能將左側針板台部11L緊固固定於縫紉機縫台部B之上表面。 Further, on the upper surface of the sewing machine sewing machine portion B and the left side needle plate base portion 11L, as shown in FIG. 4, a positioning pin 103 is formed at a position away from the fastening portion of the two fixing screw members 102. And the pin hole 104 to which the positioning pin 103 is fitted is inserted into the positioning pin 103 by inserting the pin hole 104 from above, and the left needle plate base portion 11L is positioned at a predetermined position with respect to the sewing machine bed portion B. In this state, by screwing the fixing screw member 102 into the screw hole 101, the left needle board base portion 11L can be fastened and fixed to the upper surface of the sewing machine bed portion B.

再者，第一實施形態中，雖對於定位銷103自縫紉機縫台部B之上表面向上方突出、銷孔104形成於左側針板台部11L之情況進行了說明及圖示，但亦可為定位銷103自左側針板台部11L之下表面向下方突出、銷孔104形成於縫紉機縫台部B之上表面。 In the first embodiment, the positioning pin 103 is protruded upward from the upper surface of the sewing machine bed portion B, and the pin hole 104 is formed in the left needle plate base portion 11L. The positioning pin 103 protrudes downward from the lower surface of the left needle plate base portion 11L, and the pin hole 104 is formed on the upper surface of the sewing machine bed portion B.

另一方面，分割為兩部分之右側針板台部11R構成支撐前述線操作氣缸32及止動氣缸42之氣缸安裝台部(以下，將該右側針板台部11R稱為氣缸安裝台部)，於該氣缸安裝台部11R之下部配置有上述止動機構。詳細而言，於氣缸安裝台部11R之下表面，如圖5~圖8所示，透過安裝螺絲105而固定支撐有線操作氣缸32，止動氣缸42以二段重疊之狀態配置於該線操作氣缸32之下部，該止動氣缸42透過安裝螺絲106而固定支撐於氣缸安裝台部11R。 On the other hand, the right needle plate stage portion 11R divided into two parts constitutes a cylinder mounting base portion that supports the wire operation cylinder 32 and the stopper cylinder 42 (hereinafter, the right needle plate stage portion 11R is referred to as a cylinder mounting base portion). The stopper mechanism is disposed below the cylinder mounting base portion 11R. Specifically, on the lower surface of the cylinder mounting base portion 11R, as shown in FIGS. 5 to 8, the wired operation cylinder 32 is fixedly supported by the mounting screw 105, and the stop cylinder 42 is overlapped in two stages. The lower portion of the wire operating cylinder 32 is placed, and the retaining cylinder 42 is fixedly supported by the cylinder mounting base portion 11R via the mounting screw 106.

前述氣缸安裝台部11R透過固定螺絲構件107以固定狀態組裝於縫紉機縫台部B之背面。此處，固定狀態係指，當將防綻線裝置H組裝於縫紉機縫台部B時藉由前述固定螺絲構件107之緊固而固定於既定的位置，組裝後亦不進行位置調整等便固定於既定的組裝位置的狀態。 The cylinder mounting base portion 11R is assembled to the back surface of the sewing machine bed portion B in a fixed state by the fixing screw member 107. Here, the fixed state means that when the anti-frozen line device H is assembled to the sewing machine bed portion B, it is fixed at a predetermined position by the fastening of the fixing screw member 107, and is fixed without position adjustment after assembly. The state of the established assembly position.

前述連結棒35之一端(右端)部藉由銷釘108以能轉動之方式連結於止動機構之止動構件14。於與該連結棒35之一端與止動構件14的利用銷釘108之連結部對應的部位之氣缸安裝台部11R，以容許伴隨線操作氣缸32之伸縮而於左右方向線性地往復移動之止動構件14的線性往復移動的方式，形成有沿左右方向較長之狹縫109。 One end (right end) of the connecting rod 35 is rotatably coupled to the stopper member 14 of the stopper mechanism by a pin 108. The cylinder mounting base portion 11R at a portion corresponding to the connection portion of the stopper member 14 and the pin portion 108 of the stopper member 14 is allowed to linearly reciprocate in the right and left direction in association with the expansion and contraction of the linear operation cylinder 32. The linear reciprocating movement of the member 14 is formed with a slit 109 that is long in the left-right direction.

又，於前述連結棒35之另一端與前述掛線鉤3相連之與延設部3c之連結端部分35a向下方彎折前述延設部3c之大致厚度量。於該向下方彎折之連結棒35之連結端部分35a，銷110向上方突出，另一方面，於前述延設部3c，形成有能自前述銷110之上方相對於供該銷110***及向上方拔出的連結孔111。 Further, the other end of the connecting rod 35 is connected to the hook hook 3 and the connecting end portion 35a of the extending portion 3c is bent downward by a substantially thickness of the extending portion 3c. The pin 110 is protruded upward from the connecting end portion 35a of the connecting rod 35 bent downward, and the extending portion 3c is formed to be insertable from the upper side of the pin 110 with respect to the pin 110. The connecting hole 111 that is pulled upward.

藉此，當使左側針板台部11L相對於縫紉機縫台部B解除固定且自縫紉機縫台部B卸除時，無須實施對將連結棒35與延設部3c固定連結之例如固定螺絲等進行擰鬆操作而解除兩者之連動狀態的作業，僅藉由向上方抬起左側針板台部11L，便能使延設部3c之連結孔111自銷110向上方拔出而解除連結棒35與延設部3c(掛線鉤3)之連動狀態。又，當將左側針板台部11L安裝於縫紉機縫台部B時，僅藉由使左側針板台部11L 自上方向縫紉機縫台部B移動，便能將連結孔111自上方***至銷110而使連結棒35與延設部3c(掛線鉤3)復位至連動狀態。再者，連結棒35之連結端部分35a未必一定要向下方彎折。即，連結棒35亦可為遍及其全長呈偏平之板狀者。 Therefore, when the left needle board base portion 11L is released from the sewing machine bed portion B and is removed from the sewing machine bed portion B, it is not necessary to perform fixing screws such as fixing screws for fixing the connecting rod 35 and the extending portion 3c. When the loosening operation is performed and the interlocking state of the two is released, the connecting hole 111 of the extending portion 3c can be pulled upward from the pin 110 by releasing the left needle plate base portion 11L upward, and the connecting rod can be released. 35 is interlocked with the extension portion 3c (the hook hook 3). Further, when the left needle board base portion 11L is attached to the sewing machine bed portion B, only the left needle plate base portion 11L is used. When the sewing machine sewing machine portion B is moved upward, the connecting hole 111 can be inserted into the pin 110 from above, and the connecting rod 35 and the extending portion 3c (the hook hook 3) can be returned to the interlocking state. Further, the connecting end portion 35a of the connecting rod 35 does not necessarily have to be bent downward. That is, the connecting rod 35 may be a plate having a flat shape over its entire length.

進而，對於前述止動機構之搖擺桿9以能以上下方向之支軸90為中心搖擺之方式進行支撐的搖擺桿安裝台92，係透過左右方向較長之狹縫93與固定螺絲94而以能於左右進行位置調節地方式安裝於氣缸安裝台部11R。當將氣缸安裝台部11R透過固定螺絲構件107以固定狀態組裝於縫紉機縫台部B之後，亦能藉由使搖擺桿安裝台92相對於氣缸安裝台部11R於左右進行位置調節，從而任意地調整彎針1自保持於掛線鉤3之針線線環20a2、20b2穿出的時序，藉此，能確實地進行用於防止線跡綻線之自連。 Further, the rocking rod mounting base 92 that supports the rocking rod 9 of the above-described stopper mechanism so as to be pivoted about the support shaft 90 in the up-and-down direction is transmitted through the slit 93 and the fixing screw 94 which are long in the left-right direction. The cylinder mounting base portion 11R can be attached to the left and right positions. After the cylinder mounting base portion 11R is assembled to the sewing machine bed portion B in a fixed state by the fixing screw member 107, the swing lever mounting base 92 can be positionally adjusted to the right and left with respect to the cylinder mounting base portion 11R, thereby arbitrarily The timing at which the looper 1 is passed through the loophole loops 20a2, 20b2 held by the hook hook 3 is adjusted, whereby the self-connection for preventing the strand fray can be surely performed.

如以上說明所述，本實施形態之橫筒形雙環縫合縫紉機中，採用將針板台11分割為左側針板台部11L與右側針板台部11R該兩部分之構成，藉此，當將線跡綻線防止裝置H組裝於縫紉機縫台部B時，能將左右分割為兩部分之針板台11之左側針板台部11L及右側之氣缸安裝台部11R分別獨自安裝於縫紉機縫台部B。故與以由左右兩側針板台部11L、11R一體化而成為左右較長之一個大的針板台進行操作時相比，能以較少之勞動力輕鬆地進行防綻線裝置H整體向縫紉機縫台部B之安裝(組裝)作業。 As described above, in the horizontal tubular double-loop sewing machine of the present embodiment, the needle plate stage 11 is divided into the left needle plate base portion 11L and the right needle plate base portion 11R. When the stitch fray preventing device H is assembled to the sewing machine sewing machine portion B, the left needle plate base portion 11L and the right side cylinder mounting table portion 11R of the needle plate table 11 divided into two parts can be individually attached to the sewing machine sewing table. Part B. Therefore, the entire anti-flaw line device H can be easily performed with less labor than when the needle plate table 11A and 11R are integrated by the left and right needle plate bases 11L and 11R. Installation (assembly) of the sewing machine table B.

又，當將針板台11(左側針板台部11L及右側之氣缸安裝台部11R)暫時組裝於縫紉機縫台部B之後，例如，當需要修正彎針1、或其之作動用構件等於針板台11之下部收容於縫紉機縫台部B內部且構成縫紉的構件之位置或運動軌跡而調整縫紉狀況時、或是需要對在針板台11之下部收容於縫紉機縫台部B內部之各種零件進行維修或更換等維護時，無須自縫紉機縫台部B卸除使連接有空氣管33及43之線操作氣缸32及止動氣缸43於組裝時牢固地固定支撐於既定位置的氣缸安裝台部11R，僅藉由僅解除左側針板台部11L對於縫紉機縫台部B之固定且予以卸除便能確保充分大的作業空間從而容易進行縫紉狀況之調整或維護。 Further, after the needle plate stage 11 (the left needle plate stage portion 11L and the right side cylinder mounting table portion 11R) is temporarily assembled to the sewing machine bed portion B, for example, when it is necessary to correct the looper 1, or the actuating member thereof is equal to When the lower portion of the needle plate table 11 is housed in the sewing machine sewing machine portion B and the position or the movement trajectory of the sewing member is adjusted to adjust the sewing condition, or it is necessary to be in the needle plate table 11 When the lower part is housed in various parts inside the sewing machine sewing machine unit B for maintenance or replacement, it is not necessary to remove the thread operating cylinder 32 and the stop cylinder 43 to which the air pipes 33 and 43 are connected when assembling. The cylinder mounting base portion 11R that is fixedly supported at a predetermined position can secure the sewing operation by securing a sufficiently large working space by merely releasing the fixing and dismounting of the sewing machine sewing machine portion B by the left needle plate base portion 11L. Adjustment or maintenance.

其次，對於本實施形態之橫筒形雙環縫合縫紉機所具備之切線機構5進行說明。該切線機構5係如圖10至圖12所示，構成為該切線裝置5能透過往復驅動移動機構70於接近前述針板12及彎針1之前述進入位置P1與較該進入位置P1位於右後方之退避位置P2之間往復驅動移動。而且，切線裝置5具有：線切斷用之可動切刀50，其於既定的縫製動作結束後、即縫紉結束時，切斷突出於前述縫製縫料W之背面側的左右之針線部20a1、20b1及彎針線部10a；固定切刀51，其於前述進入位置P1中並非前述左右之針2a、2b中之右針2b之上下往復運動路徑內的範圍內接近落針位置的位置，配置有刀部51e；板彈簧製之彎針線卡夾構件52，其配置於前述可動切刀50之下部，且與前述可動切刀50於其等之間彈性卡夾保持被切斷之彎針線10之端部；及線卡夾輔助彈簧53，其用於調整該彎針線卡夾構件52之卡夾保持力。 Next, the thread cutting mechanism 5 provided in the horizontal tubular double loop sewing machine of the present embodiment will be described. As shown in FIGS. 10 to 12, the tangential mechanism 5 is configured such that the tangential device 5 can pass through the reciprocating drive moving mechanism 70 at the entry position P1 close to the needle plate 12 and the looper 1 and to the right at the entry position P1. The rear retracted position P2 is reciprocally driven to move. In addition, the thread cutting device 5 has a movable cutter 50 for cutting the thread, and cuts the left and right needle thread portions 20a1 protruding from the back side of the sewing material W after the completion of the predetermined sewing operation, that is, when the sewing is completed. 20b1 and the looper portion 10a; and the fixed cutter 51 is disposed at a position close to the needle drop position in the range of the upper and lower reciprocating paths of the right and left needles 2b and 2b in the entry position P1. a knife portion 51e; a looper clip member 52 made of a leaf spring, disposed at a lower portion of the movable cutter 50, and elastically clamping the looper thread 10 between the movable cutter 50 and the like And a line clip auxiliary spring 53 for adjusting the clip holding force of the looper clip member 52.

前述可動切刀50係如圖10及圖12所示，由在左右方向較長之帶狀板材構成，於由該較長之帶狀板材構成之可動切刀50之靠前端的位置，形成有針線捕捉部50b，該針線捕捉部50b係當該可動切刀50自靠前述落針位置之另一側(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，鉤掛且捕捉前述針板12上之突出於縫製縫料W之背面側的右左之針線部20b1、20a1，並且，於前述可動切刀50之前端部形成有彎針線捕捉部50a，該彎針線捕捉部50a係當該可動切刀50自靠前述落針位置之另一側(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，鉤掛且捕捉突出於前述針板12上之縫製縫料W之背面側的彎針線部10a。而且，當可動切刀50返行驅動移動時使由前述針線捕捉部50b捕捉之針線部20b1、20a1及由前述彎針線捕捉部50a捕捉之彎針線部10a移動至較靠前述落針位置之一側(右側)之外部位置更靠另一側(右側)的位置為止，且藉由前述各捕捉部50b、50a與前述固定刀51之刀緣部51e之滑接予以切斷。 As shown in FIGS. 10 and 12, the movable cutter 50 is formed of a strip-shaped plate material that is long in the left-right direction, and is formed at a position of the front end of the movable cutter 50 composed of the long strip-shaped plate material. The needle thread catching portion 50b is configured such that when the movable cutter 50 is driven to move outward from the outer position of the other side (left side) of the needle drop position toward the outer side (right side), the hook Hanging and catching the back side of the needle plate 12 protruding from the sewing material W a right-left needle thread portion 20b1, 20a1, and a looper catching portion 50a formed at a front end of the movable cutter 50, the looper catching portion 50a being the other one of the needle-dropping positions of the movable cutter 50 When the outer position of the side (left side) is driven to move toward the outer side of the one side (right side), the looper portion 10a protruding from the back side of the sewing material W on the needle plate 12 is caught and caught. When the movable cutter 50 is driven to move backward, the needle thread portions 20b1 and 20a1 captured by the needle thread catching portion 50b and the looper thread portion 10a captured by the looper thread catching portion 50a are moved to one of the aforementioned needle drop positions. The outer position of the side (right side) is further away from the other side (right side), and is cut by the sliding contact between the respective catching portions 50b and 50a and the blade edge portion 51e of the fixed blade 51.

往復驅動移動機構70係如圖10、圖11(A)、(B)及圖12(A)、(B)所示般構成，其使前述切線裝置5於前述進入位置P1與前述退避位置P2之間往復驅動移動，且於切線裝置5已移動至前述進入位置P1之狀態下僅使前述可動切刀50於靠落針位置之一側(右側)之外部位置與靠另一側(左側)之外部位置之間沿x-y方向線性地往復驅動移動。 The reciprocating drive moving mechanism 70 is configured as shown in FIGS. 10, 11(A), and (B) and FIGS. 12(A) and (B), and the tangential device 5 is at the entry position P1 and the retracted position P2. The reciprocating driving movement is performed, and in the state where the thread cutting device 5 has moved to the aforementioned entry position P1, only the movable cutter 50 is positioned at the outer side (left side) of one side (right side) of the needle drop position and the other side (left side). The external position is linearly reciprocally driven to move in the xy direction.

亦即，前述可動切刀50係將其右端部下表面透過螺絲123而固定於可動切刀台124。該可動切刀台124之長度方向(左右方向)之大致中央部形成有U字狀之缺口部125，於夾著該缺口部125之左右位置形成有沿可動切刀台124之長度方向較長的左右一對狹縫126a、126b。 That is, the movable cutter 50 is fixed to the movable cutter table 124 by the lower surface of the right end portion thereof passing through the screw 123. A U-shaped notch portion 125 is formed in a substantially central portion in the longitudinal direction (left-right direction) of the movable cutter table 124, and a longitudinal direction along the movable cutter table 124 is formed at a left-right position sandwiching the notch portion 125. A pair of left and right slits 126a, 126b.

前述固定切刀51係配置於前述可動切刀50之上表面，於該固定切刀51之右端部下表面，切刀台導引件127及前述彎針線卡夾構件52之右端部重合配置。該等固定切刀51、切刀台導引件127及彎針線卡夾構件52透過螺絲128固定於固定切刀台129之左端部。前述可動切刀台124 藉由通插於前述固定切刀台129之背面(下表面)之有頭螺栓148及自左右一對連桿140a、140b之上表面側***至該左右一對連桿140a、140b之一端部的圓柱狀凸緣螺帽131a、131b，被夾持為前述圓柱狀凸緣螺帽131a、131b容許前述左右一對連桿140a、140b之一端部之轉動、且能於前述可動切刀台124之左右一對狹縫126a、126b之長度範圍內滑動移動的狀態。 The fixed cutter 51 is disposed on the upper surface of the movable cutter 50, and the lower end surface of the right end portion of the fixed cutter 51 is overlapped with the cutter head guide 127 and the right end portion of the hooker clip member 52. The fixed cutter 51, the cutter table guide 127, and the hook thread clamp member 52 are fixed to the left end portion of the fixed cutter table 129 by screws 128. The movable cutter table 124 The head bolt 148 that is inserted through the back surface (lower surface) of the fixed cutter table 129 and the upper surface side of the pair of left and right links 140a, 140b are inserted into one end of the pair of left and right links 140a, 140b. The cylindrical flange nuts 131a and 131b are sandwiched so that the cylindrical flange nuts 131a and 131b allow rotation of one end of the pair of right and left links 140a and 140b, and can be applied to the movable cutter table 124. A state in which the pair of left and right slits 126a and 126b are slidably moved within the length range.

於前述左右一對連桿140a、140b之另一端部，使自該左右一對連桿140a、140b之上表面側***且容許於左右一對連桿140a、140b之另一端部內轉動的凸緣襯套141a、141b透過埋頭螺絲142a、142b螺固於裝置安裝台130。藉此，前述可動切刀台124及固定切刀台129能伴隨左右一對連桿140a、140b之搖擺運動，以能於左右方向往復移動之狀態支撐於裝置安裝台130。 A flange that is inserted into the upper surface side of the pair of left and right links 140a and 140b and that is allowed to rotate in the other end portions of the pair of left and right links 140a and 140b is formed at the other end of the pair of right and left links 140a and 140b. The bushings 141a and 141b are screwed to the device mounting base 130 via the countersunk screws 142a and 142b. Thereby, the movable cutter table 124 and the fixed cutter table 129 can be supported by the device mounting base 130 in a state of being reciprocable in the left-right direction in accordance with the rocking motion of the pair of right and left links 140a and 140b.

再者，凸緣襯套141a、141b中之右側之凸緣襯套141b形成為偏心凸輪狀，此係為了能藉由變更右側之連桿140b之両端孔之間距，而以左側之連桿140a之凸緣襯套141a作為支點來對於處於切線裝置5之前述進入位置P1時之可動切刀50之落針位置及相對於彎針1的於縫料送料方向之進入移動起點的位置進行微調整。 Further, the flange bushing 141b on the right side of the flange bushings 141a, 141b is formed in an eccentric cam shape, so that the left side link can be changed by changing the distance between the end holes of the right link 140b. The flange bushing 141a of 140a serves as a fulcrum for the needle drop position of the movable cutter 50 at the aforementioned entry position P1 of the thread cutting device 5 and the position of the movement start point with respect to the feed direction of the looper 1 of the looper 1 Adjustment.

於前述固定切刀台129，在左右一對連桿140a、140b中之左側之連桿140a之下方位置形成有擋止構件134，該擋止構件134抵接於止動構件133，該止動構件133螺固於前述裝置安裝台130。 In the fixed cutter table 129, a stopper member 134 is formed at a position below the left link 140a of the pair of right and left links 140a and 140b, and the stopper member 134 abuts against the stopper member 133. The member 133 is screwed to the device mounting table 130 described above.

又，於前述固定切刀台129之長度方向中央部之後部，形成有自較前述可動切刀台124之左端略靠右之位置向後方突出、且與突起135抵接或相離的卡合突起136。且構成為藉由使該卡合突起136抵接於前述突起135，使可動切刀台124無法單獨地進一步向右方向移動。進而，前述可動切刀台124係螺固於前述裝置安裝台130，且透過一端部彈性接觸於前述擋止構件134之右端面之彈簧137而始終以向左方向移動之方式受到彈性彈壓。 Further, a rear portion of the center portion of the fixed cutter table 129 in the longitudinal direction is formed to protrude rearward from a position slightly closer to the left end of the movable cutter table 124, and is in contact with or away from the projection 135. Protrusion 136. And configured to abut the engaging protrusion 136 against the protrusion From 135, the movable cutter table 124 cannot be moved further to the right direction alone. Further, the movable cutter table 124 is screwed to the device mounting base 130, and is elastically biased so as to always move in the leftward direction by the spring 137 that elastically contacts the right end surface of the stopper member 134 at one end.

於前述裝置安裝台130，形成有供前述固定切刀台129以能於左右方向滑動自如之方式嵌入的槽146，且該裝置安裝台130透過配置於周圍之複數個螺絲147而固定於縫紉機縫台部B。又，於裝置安裝台130安裝有驅動桿145，該驅動桿145透過凸肩螺絲143樞支連結於切線用氣缸48之活塞148之前端部、且能於裝置安裝台130以軸144為中心在箭頭a-b方向上驅動搖擺。該驅動桿145之前端之尖細圓形部145a卡合於形成於前述可動切刀台124之大致中央部的U字狀之缺口部125。 A groove 146 into which the fixed cutter table 129 is slidable in the left-right direction is formed in the device mounting table 130, and the device mounting table 130 is fixed to the sewing machine through a plurality of screws 147 disposed around the device. Taiwan Department B. Further, a drive lever 145 is attached to the apparatus mounting base 130. The drive lever 145 is pivotally coupled to the front end of the piston 148 of the tangential cylinder 48 via the shoulder screw 143, and can be centered on the shaft 144 of the apparatus mounting base 130. The swing is driven in the direction of the arrow ab. The tapered circular portion 145a at the front end of the drive rod 145 is engaged with a U-shaped notch portion 125 formed at a substantially central portion of the movable cutter table 124.

根據以上述方式構成之往復驅動移動機構70，如圖11(A)、(B)所示，當藉由切線用氣缸48之活塞148之伸長使驅動桿145向b方向驅動搖擺時，切線裝置5抵抗彈簧137之彈性彈壓力向右方移動從而成為卡合突起136與突起135抵接的狀態，且左右一對連桿140a、140b之圓柱狀螺帽131a、131b移動至靠左右一對狹縫126a、126b內之最左側的狀態，固定切刀台129之擋止構件134之左端面與止動構件133相離。該狀態下，切線裝置5處於退避位置P2，以不妨礙彎針1之移動的傾斜姿勢待機。 According to the reciprocating drive moving mechanism 70 configured as described above, as shown in Figs. 11(A) and (B), when the drive lever 145 is driven to swing in the b direction by the extension of the piston 148 of the tangential cylinder 48, the tangential device 5 The elastic spring pressure of the resisting spring 137 is moved to the right to be in a state in which the engaging projection 136 abuts against the projection 135, and the cylindrical nuts 131a and 131b of the pair of right and left links 140a and 140b are moved to the left and right pair. In the leftmost state in the slits 126a, 126b, the left end surface of the stopper member 134 of the fixed cutter table 129 is separated from the stopper member 133. In this state, the thread cutting device 5 is at the retracted position P2, and stands by in an inclined posture that does not interfere with the movement of the looper 1.

而且，如圖12(A)、(B)所示，若藉由前述活塞148之收縮使驅動桿145向a方向驅動搖擺，則固定切刀台129之擋止構件134藉由彈簧137之彈性彈壓力向左方移動。隨之，於前述卡合突起136與突起135抵接之情況下，切線裝置5藉由左右一對連桿140a、140b之搖擺而減小前述傾斜姿勢之傾斜角度，同時，固定切刀台129之擋止構件134之左端面向左方移動直至抵接於止動構件133為止。藉此，切線裝置5移動至進入位置P1為止，成為相對於縫紉行進方向大致正交的姿勢。 Further, as shown in Figs. 12(A) and (B), if the drive lever 145 is driven to swing in the a direction by the contraction of the piston 148, the stopper member 134 of the fixed cutter table 129 is elasticized by the spring 137. The spring pressure moves to the left. Accordingly, in the case where the engaging projection 136 abuts against the projection 135, the tangential device 5 is reduced by the sway of the pair of left and right links 140a, 140b. At the same time, the left end of the stopper member 134 of the fixed cutter table 129 is moved to the left until it abuts against the stopper member 133. Thereby, the thread cutting device 5 moves to the entry position P1 and becomes a posture substantially orthogonal to the sewing traveling direction.

若活塞148自該狀態進一步收縮而使前述驅動桿145向a方向驅動搖擺，則固定切刀台129保持於前述進入位置P1，同時，可動切刀台124透過針板P之落針位置向左方向(x方向)移動。亦即，僅使固定於可動切刀台124之可動切刀50於針板12與彎針1之間左進(往行移動)。此時，前述可動切刀台124及固定切刀台129隨著左右一對連桿140a、140b之搖擺運動而以能於左右方向往復移動之狀態支撐於裝置安裝台130，故可動切刀50藉由左右一對連桿140a、140b而以線性地移動之方式受到控制。 When the piston 148 is further contracted from this state and the drive lever 145 is driven to swing in the a direction, the fixed cutter table 129 is held at the aforementioned entry position P1, and at the same time, the movable cutter table 124 is moved to the left by the needle drop position of the needle plate P. The direction (x direction) moves. That is, only the movable cutter 50 fixed to the movable cutter table 124 is moved leftward between the needle plate 12 and the looper 1 (moving backward). At this time, the movable cutter table 124 and the fixed cutter table 129 are supported by the device mounting table 130 in a state of being reciprocable in the left-right direction in accordance with the rocking motion of the pair of left and right links 140a and 140b, so that the movable cutter 50 is movable. It is controlled to move linearly by the pair of left and right links 140a, 140b.

繼而，因活塞148伸長，故前述驅動桿145向b方向驅動搖擺。隨之，可動切刀50自最左進之位置向右方向(y方向)移動，且右退(返行移動)至處於前述進入位置P1之待機中之固定切刀51之下部為止。藉由使活塞148自該狀態進一步收縮，使切線裝置5後退移動至圖11(A)、(B)所示之退避位置P2。 Then, since the piston 148 is extended, the drive lever 145 is driven to swing in the b direction. Accordingly, the movable cutter 50 moves in the right direction (y direction) from the leftmost position, and rightward (returns) to the lower portion of the fixed cutter 51 in the waiting state at the entry position P1. By further contracting the piston 148 from this state, the thread cutting device 5 is moved backward to the retracted position P2 shown in Figs. 11(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還具備彎針線回拉力賦予裝置84。 In addition to the above-described configuration and apparatus, the double loop sewing machine of the present embodiment further includes a looper thread pullback force applying device 84.

彎針線回拉力賦予裝置84如圖1及圖2所示，配置於前述切線裝置5之往復驅動移動機構70之上部的縫紉機縫台部B之內部。該彎針線回拉力賦予裝置84具備：複數個彎針線導引件150，其固定設置，用以將跨及且位於夾線板等彎針線供給源裝置(其係眾所周知，故省略圖示及具體構成之說明)與前述彎針1之間的彎針線部分10a以大致直線狀抽出且進行移動導引；搖擺臂152，其能以前述彎針線供給源裝置附近之位置作為支點軸151而於水平或大致水平面內在與前述彎針線導引件150對向之位置與前方側方位置之間往復搖擺；及致動器153，其於前述兩個位置間往復搖擺驅動該搖擺臂152；於前述搖擺臂152之前端部安裝有彎針線鉤掛部154，該彎針線鉤掛部154係鉤掛前述複數個彎針線導引件150中，彼此隔開較短之距離而相對向之2個彎針線導引件150a、150b間的彎針線部分10a中，靠近前述彎針線供給源裝置之彎針線導引件150a的彎針線部分10a。 As shown in FIGS. 1 and 2, the looper thread pull-back force applying device 84 is disposed inside the sewing machine bed portion B of the upper portion of the reciprocating drive moving mechanism 70 of the thread trimming device 5. The looper thread pull-back force applying device 84 includes a plurality of looper thread guides 150 that are fixedly disposed for feeding the source of the looper wire such as a tension plate and the like. The description of the configuration) and the looper portion 10a between the looper 1 are drawn in a substantially straight line shape And a moving guide; the swing arm 152 can be positioned at a position opposite to the hooker guide 150 and a front side position in a horizontal or substantially horizontal plane at a position near the hook line supply source device as a fulcrum shaft 151. And a reciprocating oscillating motion; and an actuator 153 that reciprocally oscillates the swing arm 152 between the two positions; a hook line hooking portion 154 is attached to the front end of the swing arm 152, and the hook thread hooking portion 154 Hooking the plurality of looper thread guides 150 apart from each other by a short distance from the looper line portion 10a between the two looper guides 150a, 150b, adjacent to the looper supply device The looper portion 10a of the looper guide 150a.

前述致動器153如圖14所示，由彈簧153a與單動式伸縮流體壓(空氣壓)氣缸153b組合構成，該彈簧153a係使前述搖擺臂152自前述彎針線鉤掛部154與前述彎針線導引件150a對向之位置往前述前方側方位置進行往行搖擺彈壓，該單動式伸縮流體壓(空氣壓)氣缸153b如圖13所示，藉由作用於自前述搖擺臂152大致呈直角一體延伸出的臂部152a而使該搖擺臂152自前述前方側方位置往前述彎針線鉤掛部154與前述彎針線導引件150a對向之位置進行返行搖擺驅動。 As shown in FIG. 14, the actuator 153 is composed of a spring 153a combined with a single-acting type telescopic fluid pressure (air pressure) cylinder 153b that causes the swing arm 152 to be bent from the hook line hook portion 154 and the aforementioned bend. The needle thread guide 150a is swayed toward the front side position, and the single-motion type telescopic fluid pressure (air pressure) cylinder 153b acts on the swing arm 152 as shown in FIG. The arm portion 152a integrally extending at a right angle causes the swing arm 152 to swing back and forth from the front side position to the position where the hook line hook portion 154 faces the hook thread guide 150a.

以上述方式構成之彎針線回拉力賦予裝置84進行動作以使當上述自連後之前述彎針1之進入動作時自圖13之狀態成為圖14之狀態。藉此，使彎針線部分10a以俯視時形成大致直角三角形之一直線邊與斜邊的方式向前方側方彎折，自彎針線供給源裝置向供給至前述彎針1之彎針線部分10a賦予朝向前述彎針線供給源裝置側之回拉力。其結果，能去除彎針線10之鬆弛，該彎針線10之鬆弛會因於常規縫製結束後藉由彎針線保持體6將彎針線10保持於較前述針之下降位置靠前側的位置、這一用於利用自連獲得防綻線效果的不可缺少之動作而產生。 The looper thread pull-back force applying device 84 configured as described above operates to bring the state of the looper 1 after the self-joining operation to the state of FIG. 14 from the state of FIG. In this way, the looper thread portion 10a is bent forward toward the front side so as to form one straight side and the oblique side of the substantially right-angled triangle, and the looper supply device supplies the needle loop portion 10a supplied to the looper 1 toward the front side. The looper wire is supplied to the source device side back tension. As a result, the slack of the looper thread 10 can be removed, and the slack of the looper thread 10 is maintained by the looper thread retaining body 6 at the front side of the lowering position of the needle by the looper retaining body 6 after the completion of the conventional sewing. An indispensable action for obtaining the anti-frozen effect by self-joining.

再者，作為前述彎針線回拉力賦予裝置84之致動器153中的向彎針線部分10a賦予回拉力的彈簧153a，當對彎針線部分10a賦予過強的回拉力時，可能會產生縫製褶皺等，故希望設定為能賦予不會產生縫製褶皺等之程度的適當回拉力般的彈性彈壓力。 Further, as the spring 153a that imparts a pulling force to the looper portion 10a in the actuator 153 of the looper pull-back force applying device 84, when the looper portion 10a is subjected to an excessive pulling force, sewing wrinkles may occur. In the meantime, it is desirable to set the elastic elastic pressure such that an appropriate pull-back force can be imparted to the extent that no wrinkles or the like are formed.

圖15係顯示包含上述線跡綻線防止裝置H及切線裝置5在內的本實施形態之橫筒形雙環縫合縫紉機之控制系統之構成的方塊圖。 Fig. 15 is a block diagram showing the configuration of a control system of the horizontal tubular double-loop sewing machine of the present embodiment including the above-described thread fray preventing device H and the thread cutting device 5.

向雙環縫合縫紉機之控制部8分別輸入來自踏板開關21之踏入訊號21a及踏回訊號21b、當針2a、2b位於上止點近旁時發送之針位置訊號22、及切線訊號23及針線挑去訊號24。 The control unit 8 of the double loop sewing machine respectively inputs the stepping signal 21a and the stepping signal 21b from the pedal switch 21, the needle position signal 22 transmitted when the needles 2a, 2b are located near the top dead center, and the tangential signal 23 and the needle thread picking Go to signal 24.

另一方面，自控制部8分別向線操作氣缸32、止動氣缸42及切線用氣缸48輸出動作控制訊號。掛線鉤3及彎針線保持體6按照由控制部8輸出至線操作氣缸32及止動氣缸42之動作控制訊號如上所述進行動作，切線用氣缸48按照由控制部8輸出之切線訊號23分別進行伸縮動作。 On the other hand, the self-control unit 8 outputs an operation control signal to the line operation cylinder 32, the stop cylinder 42, and the tangential cylinder 48, respectively. The hooking hook 3 and the looper thread holding body 6 operate as described above in accordance with the operation control signals output from the control unit 8 to the line operating cylinder 32 and the stopping cylinder 42, and the tangential cylinder 48 follows the tangential signal 23 outputted by the control unit 8. Perform telescopic movement separately.

進而，自控制部8亦分別向作為傳動旋轉軸之驅動源之縫紉機馬達80、使壓布構件升降之壓布氣缸81、使以後述方式被切斷之針線20a、20b跳起的空氣刷82、調整縫製縫料之送料量之送料減少機構83、及彎針線回拉力賦予裝置84輸出動作控制訊號。 Further, the self-control unit 8 also drives the sewing machine motor 80, which is a driving source of the transmission rotating shaft, the pressing cylinder 81 that raises and lowers the pressing member, and the air brush 82 that jumps the sewing threads 20a and 20b which are cut in the manner described later. The feed reduction mechanism 83 for adjusting the feed amount of the sewing material and the looper pull force applying device 84 output an operation control signal.

送料減少機構83藉由改變送料機構中之送料齒之動作態樣、例如使送料齒之動作路徑相對於針板12傾斜而使往針板P上之突出時間變短，來縮短送料齒作用於針板12上之縫製縫料的時間，或是，藉由變更使送料齒循環作動之桿之長度，減小送料齒之單位送料間距等，從而減少縫製縫料之送料量，此種送料減少機構83為公知機構，故省略詳細圖示及說明。 The feed reducing mechanism 83 shortens the protruding time on the needle plate P by changing the action state of the feeding teeth in the feeding mechanism, for example, tilting the operating path of the feeding teeth with respect to the needle plate 12, thereby shortening the feeding teeth action The time for sewing the sewing material on the needle plate 12, or by changing the length of the rod for circulating the feeding teeth, reducing the unit feeding pitch of the feeding teeth, etc., thereby reducing the feeding amount of the sewing material, and the feeding amount is reduced. The mechanism 83 is a well-known mechanism, so detailed illustration is omitted. And instructions.

控制部8於形成雙環縫合之線跡的縫製結束後，使掛線鉤3與縫紉機馬達80、壓布氣缸81、空氣刷82、送料減少機構83及彎針線回拉力賦予裝置84相關聯地動作，藉此執行防止雙環縫合之線跡綻線動作及切線動作。 After the sewing of the stitch forming the double loop stitching is completed, the control unit 8 operates the hook hook 3 in association with the sewing machine motor 80, the pressing cylinder 81, the air brush 82, the feed reducing mechanism 83, and the looper return force applying device 84. Thereby, the wire fraying action and the tangential action for preventing the double loop stitching are performed.

圖16係以時間序列顯示用於防綻線之控制部8之動作內容的時序圖。控制部8係具備CPU、ROM及RAM之電腦，圖16之時序圖所示防綻線動作及切線動作藉由根據ROM內儲存之控制程式的CPU之一系列動作而執行。 Fig. 16 is a timing chart showing the contents of the operation of the control unit 8 for the fraud prevention line in time series. The control unit 8 is a computer including a CPU, a ROM, and a RAM. The fray line operation and the tangential operation shown in the timing chart of FIG. 16 are executed by one series of operations of the CPU according to the control program stored in the ROM.

圖17~圖22係本實施形態之橫筒形雙環縫合縫紉機中之防綻線裝置H的防綻線動作之說明圖，且顯示藉由圖16之時序圖所示之控制部8之動作而產生的掛線鉤3及彎針線保持體6之動作狀態。 FIG. 17 to FIG. 22 are explanatory views of the anti-frozen line operation of the anti-frozen line device H in the horizontal cylindrical double-loop stitching sewing machine of the present embodiment, and the operation of the control unit 8 shown in the timing chart of FIG. 16 is displayed. The action state of the threaded hook 3 and the looper thread holding body 6 is generated.

於結束常規之縫製時，使用縫紉機之縫製作業者停止用於縫紉機驅動之踏板之踏入操作，之後執行防綻線動作，但此情況下，會對前述踏板進行踏回操作。踏板開關21係配設於踏板，於踏入操作中輸出踏入訊號21a，當進行踏回操作時輸出踏回訊號21b。 When the conventional sewing is completed, the sewing machine using the sewing machine stops the stepping operation of the pedal for driving the sewing machine, and then performs the anti-frozen line operation, but in this case, the pedal is stepped back. The pedal switch 21 is disposed on the pedal, and outputs a stepping signal 21a in the stepping operation, and outputs a stepping signal 21b when the stepping operation is performed.

控制部8結束常規之縫製，且於圖16之S1時間點，用於縫紉機驅動之踏板自踏入狀態返回至中立狀態時，亦即，處於未自踏板開關21輸出踏入訊號21a及踏回訊號21b中之任一者的狀態時，參照提供至輸入側之針位置訊號22而向縫紉機馬達80輸出停止指令。藉此，縫紉機暫時停止於針2a、2b位於上止點近旁、彎針1左進之狀態。 The control unit 8 ends the conventional sewing, and at the time point S1 of Fig. 16, when the pedal for the sewing machine drive returns from the stepping state to the neutral state, that is, the stepping signal 21a is not output from the pedal switch 21 and the stepping back is made. In the state of any of the signals 21b, the stop command is output to the sewing machine motor 80 with reference to the needle position signal 22 supplied to the input side. Thereby, the sewing machine temporarily stops in a state where the needles 2a and 2b are located near the top dead center and the looper 1 is leftward.

此後，控制部8待機直至前述踏板受到踏回操作為止。於圖 16之S2時間點進行踏回操作，於輸入側輸入了踏回訊號21b時，控制部8首先於S3時間點向送料減少機構83提供動作開始指令以減小送料齒之單位送料間距等、使縫製縫料之送料量小於(減少)常規縫製時之送料量，此後，開始進行下述防綻線動作。再者，前述送料減少機構83中之送料齒對縫製縫料之較小送料量的送料之開始時期(S3)係設定為藉由掛線鉤3使針線線環20a2、20b2位於較針2a、2b之下降位置靠彎針1之進入端側的位置之前的1針前。 Thereafter, the control unit 8 stands by until the pedal is subjected to the step-back operation. In the picture When the stepping operation is performed at the S2 time point of 16 and the stepping signal 21b is input to the input side, the control unit 8 first supplies an operation start command to the feeding reduction mechanism 83 at the time point S3 to reduce the unit feeding pitch of the feeding teeth, etc. The feed amount of the sewn sewing material is smaller than (reduced) the feed amount at the time of conventional sewing, and thereafter, the following anti-friction line operation is started. Further, the feeding timing (S3) of the feeding amount of the feed tooth to the sewing material in the feed reducing mechanism 83 is set such that the needle thread loops 20a2, 20b2 are positioned in the needle 2a by the hook hooks 3, The lowering position of 2b is before the one needle before the position on the entry end side of the looper 1.

再者，當控制部8再次由踏板開關21輸入踏入訊號21a時，恢復為常規之縫製動作，故縫製作業者能藉由再次對踏板進行踏入操作而繼續進行常規之縫製。又，圖15中，自S1時間點至S2時間點期間維持中立狀態，但並非必須維持此種中立狀態，常規之縫製結束時之踏板之操作亦能自踏入狀態連續地移行至踏回狀態。此情況下，於移行過程中經過中立位置時，成為均不輸出踏入訊號21a及踏回訊號21b之無訊號狀態，控制部8以該無訊號狀態作為觸發而如上所述般，於實現針2a、2b上升至上止點近旁、彎針1左進之狀態後開始進行防綻線動作。 Further, when the control unit 8 inputs the depression signal 21a again by the pedal switch 21, the sewing operation is resumed, so that the sewing operator can continue the conventional sewing by stepping on the pedal again. Further, in Fig. 15, the neutral state is maintained from the time S1 to the time S2, but it is not necessary to maintain the neutral state, and the operation of the pedal at the end of the conventional sewing can be continuously moved from the stepping state to the stepping state. . In this case, when the neutral position is passed during the transition, the signal-free state of the stepping signal 21a and the stepping signal 21b is not outputted, and the control unit 8 uses the signal-free state as a trigger to implement the needle as described above. 2a and 2b rise to the vicinity of the top dead center and the left hand of the looper 1 starts to perform the anti-frozen line operation.

又，圖16之時序圖中，S2時間點下之踏板之踏回操作於以下說明之防綻線動作之執行過程中持續進行，但此種踏回操作並不須持續至防綻線動作結束為止，踏回訊號21b之輸入停止後，防綻線動作亦可藉由控制部8之作用而持續執行。 Moreover, in the timing chart of FIG. 16, the stepping operation of the pedal at the S2 time point is continued during the execution of the anti-friction line operation described below, but the stepping operation does not have to continue until the end of the anti-friction line operation. Until the input of the stepping signal 21b is stopped, the fraud prevention line operation can be continuously performed by the action of the control unit 8.

圖17中顯示防綻線動作開始時的針2a、2b、彎針1、掛線鉤3及彎針線保持體6之狀態。針2a、2b係處於向藉由兩根針線20a、20b與一根彎針線10而形成有雙環縫合之線跡M的縫製縫料之上方穿出的狀態。彎針1於縫製縫料之下側左進，處於已捕捉針2a、2b所形成之針線線環20a2、20b2的狀態。該狀態下，若切斷針線20a、20b及彎針線10，則如圖24所示，形成容易產生綻線之一般的縫紉終端部。 The state of the needles 2a and 2b, the looper 1, the hook hook 3, and the looper thread holding body 6 at the start of the anti-frozen line operation is shown in Fig. 17 . The needles 2a and 2b are in a state of being passed over the sewing material which is formed by the double stitching stitches M by the two needle threads 20a and 20b and one of the looper threads 10. state. The looper 1 is leftward on the lower side of the sewing material, and is in a state in which the needle thread loops 20a2, 20b2 formed by the needles 2a, 2b have been caught. In this state, when the needle threads 20a and 20b and the looper thread 10 are cut, as shown in Fig. 24, a general sewing end portion in which a fray is likely to occur is formed.

防綻線動作開始後，控制部8首先於圖16之S2時間點向輸出側之線操作氣缸32提供動作指令。藉此，線操作氣缸32自圖6所示擴展狀態向圖7所示收縮狀態動作而使止動構件14向右方向驅動移動，隨之，掛線鉤3透過止動構件14及連結棒35而以支軸30為中心搖擺且自待機位置移動至掛線位置。此時成為掛線鉤3之前端之鉤部3b鉤掛一方之針線線環20a1，且止動機構中之搖擺桿9藉由彈簧96之彈壓力而以支軸90為中心向順時針方向搖擺，其前端之卡合爪9a能卡合於止動構件14之一部分之狀態。 After the start of the fraud prevention line operation, the control unit 8 first supplies an operation command to the line operation cylinder 32 on the output side at the time point S2 of Fig. 16 . Thereby, the wire operating cylinder 32 is moved from the expanded state shown in FIG. 6 to the contracted state shown in FIG. 7, and the stopper member 14 is driven to move in the right direction, and the hook hook 3 is transmitted through the stopper member 14 and the connecting rod 35. On the other hand, the fulcrum is centered on the fulcrum 30 and moved from the standby position to the hanging position. At this time, the hook portion 3b at the front end of the hook hook 3 is hooked to one of the needle thread loops 20a1, and the swing lever 9 in the stopper mechanism swings clockwise around the spindle 90 by the spring pressure of the spring 96. The engaging claw 9a at the front end thereof can be engaged with a portion of the stopper member 14.

之後，控制部8立即向線操作氣缸32提供動作指令，該線操作氣缸32自圖7所示狀態略微擴展至圖8所示狀態，止動構件14線性地向左方驅動移動。當該線操作氣缸32略微擴展時，搖擺桿9之前端之卡合爪9a卡合於止動構件14之一部分。藉此，止動構件14向左方向之驅動移動暫時停止。於止動構件14向左方向之驅動移動暫時停止的狀態下，如圖18所示，前述掛線鉤3透過連結棒35移動且停止於前述待機位置與掛線位置之間的保持位置，前端之鉤部3b將針線線環20a2保持於前述保持位置，且如圖19所示，彎針線保持體6進入至彎針1之前側，前端之彎針線承接部6a於左側之落針位置A之前方保持彎針線10。因此，當彎針線保持體6返回至前述待機位置時，自該彎針線保持體6脫離之彎針線10有時會產生鬆弛。 Thereafter, the control unit 8 immediately supplies an operation command to the line operation cylinder 32, the line operation cylinder 32 slightly expanded from the state shown in Fig. 7 to the state shown in Fig. 8, and the stopper member 14 linearly drives the movement to the left. When the wire operating cylinder 32 is slightly expanded, the engaging claw 9a at the front end of the rocking lever 9 is engaged with a portion of the stopper member 14. Thereby, the driving movement of the stopper member 14 in the left direction is temporarily stopped. In a state in which the driving movement of the stopper member 14 in the left direction is temporarily stopped, as shown in FIG. 18, the hook hook 3 is moved by the connecting rod 35 and stopped at the holding position between the standby position and the hanging position. The hook portion 3b holds the needle thread loop 20a2 in the aforementioned holding position, and as shown in Fig. 19, the looper thread holding body 6 enters the front side of the looper 1, and the looper thread receiving portion 6a of the front end precedes the needle drop position A on the left side. The side maintains the looper thread 10. Therefore, when the looper thread holding body 6 returns to the aforementioned standby position, the looper thread 10 which is detached from the looper thread holding body 6 sometimes has slack.

掛線鉤3及彎針線保持體6如圖20所示，持續保持針線20a、20b及彎針線10，直至縫製縫料之送料移動結束、針2a、2b穿過掛線鉤3保持之針線線環20a2而捕捉該針線線環20a2為止。此時，彎針線保持體6所保持之彎針線10如圖20所示橫穿左側之針2a之前側的位置。從而，左側之針2a不捕捉彎針線10，而僅藉由右側之針2b於彎針1後側捕捉該彎針線10。 As shown in FIG. 20, the hook hook 3 and the looper thread retaining body 6 continue to hold the needle thread 20a, 20b and the looper thread 10 until the feed movement of the sewing material is finished, and the needle thread 2a, 2b passes through the thread thread held by the thread hook 3. The loop 20a2 catches the stitching loop 20a2. At this time, the looper thread 10 held by the looper thread holding body 6 traverses the position on the front side of the left needle 2a as shown in FIG. Therefore, the needle 2a on the left side does not capture the looper thread 10, and the looper thread 10 is captured only on the rear side of the looper 1 by the needle 2b on the right side.

如上所述使掛線鉤3及彎針線保持體6移動停止於前述各位置之後，控制部8於圖16之S3時間點向縫紉機馬達80提供動作指令。該動作指令係於參照針位置訊號22而使針2a、2b下降後再次上升至上止點近旁位置為止之期間提供。藉此，對於縫製縫料進行1針量之縫製動作。該1針量之縫製係藉由送料減少機構83之動作，以較常規之縫製時小的送料量執行。 After the hook hook 3 and the hook thread holding body 6 are moved and stopped at the respective positions as described above, the control unit 8 supplies an operation command to the sewing machine motor 80 at the time point S3 of Fig. 16 . This operation command is provided while the needles 2a and 2b are lowered by the reference needle position signal 22 and then raised to the vicinity of the top dead center. Thereby, the sewing sewing material is subjected to a sewing operation of one stitch. The sewing of the one-needle amount is performed by the action of the feed reduction mechanism 83, which is performed at a smaller feed amount than in the conventional sewing.

其次，控制部8於圖16之S4時間點向止動機構之止動氣缸42提供動作指令，使該止動氣缸42伸長，隨之向左方向擠出驅動輸出棒41。藉此，如圖9所示，前述搖擺桿9抵抗前述彈簧96之搖擺彈壓力而向逆時針方向搖擺，以解除該搖擺桿9之前端之卡合爪9a對止動構件14之一部分之卡合，進而解除止動構件14之暫時停止。藉由解除止動構件14之停止，使線操作氣缸32於S4時間點以最大限擴展。藉此，掛線鉤3及彎針線保持體6如圖20所示，透過止動構件14及連結棒35而以支軸30為中心搖擺且自前述保持位置復位移動至待機位置。 Next, the control unit 8 supplies an operation command to the stopper cylinder 42 of the stopper mechanism at the time point S4 of Fig. 16 to elongate the stopper cylinder 42, and then pushes and drives the output rod 41 in the left direction. Thereby, as shown in FIG. 9, the swinging lever 9 swings counterclockwise against the swinging spring pressure of the spring 96 to release the card of the engaging claw 9a of the front end of the swinging lever 9 to a part of the stopper member 14. In combination, the temporary stop of the stopper member 14 is released. By releasing the stop of the stopper member 14, the wire operating cylinder 32 is expanded to the maximum at the time point S4. As a result, as shown in FIG. 20, the hook hook 3 and the hook thread holding body 6 are swung around the support shaft 30 through the stopper member 14 and the connecting rod 35, and are moved from the holding position to the standby position.

又，控制部8使前述止動氣缸42伸長，且於前述線操作氣缸32伸長至最大限之圖16之S4時間點，使彎針線回拉力賦予裝置84進行動作。藉此，向脫離彎針線保持體6之彎針線10賦予朝向彎針線供給源裝置側之回拉力而去除於彎針線10產生之鬆弛。具體而言，彎針線回拉力賦予裝置84中之致動器153之一方即伸縮流體壓力氣缸153b收縮，且藉由致動器153之另一方即彈簧153a之彈壓力使前述搖擺臂152繞支點軸151如圖14所示般自臂前端之前述彎針線鉤掛部154與前述彎針線導引件150a對向之位置往前述前方側方位置進行往行搖擺。藉此，使彎針線部分10a以當俯視時形成大致直角三角形之一直線邊與斜邊之方式向前方側方彎折，向供給至前述彎針1之彎針線部分10a賦予朝向前述彎針線供給源裝置側的回拉力。其結果，能去除彎針線10之鬆弛，該彎針線10之鬆弛會因於常規縫製結束後藉由彎針線保持體6將彎針線10保持於較前述針之下降位置靠前側的位置、這一用於利用自連獲得防綻線效果的不可缺少之動作而產生。 Further, the control unit 8 extends the stopper cylinder 42 and causes the looper thread returning force applying means 84 to perform the step S4 of FIG. 16 when the wire operating cylinder 32 is extended to the maximum limit. action. Thereby, the looper 10 which is detached from the looper thread holding body 6 is biased toward the looper supply source device side, and the slack generated by the looper thread 10 is removed. Specifically, one of the actuators 153 in the looper return tension applying device 84, that is, the telescopic fluid pressure cylinder 153b, contracts, and the swing arm 152 is wound around the fulcrum by the spring pressure of the spring 153a, which is the other of the actuator 153. As shown in Fig. 14, the shaft 151 swings toward the front side position from the position where the hook line hooking portion 154 of the arm end is opposed to the hook thread guide 150a. By this, the looper thread portion 10a is bent forward toward the front side so as to form one straight side and the oblique side of the substantially right-angled triangle in plan view, and the hook line portion 10a supplied to the looper 1 is supplied to the looper supply source. Pull back force on the device side. As a result, the slack of the looper thread 10 can be removed, and the slack of the looper thread 10 is maintained by the looper thread retaining body 6 at the front side of the lowering position of the needle by the looper retaining body 6 after the completion of the conventional sewing. An indispensable action for obtaining the anti-frozen effect by self-joining.

而且，彎針1與針2a、2b之下降一同地進行右退動作，自所捕捉之針線線環20a2穿出。藉由該彎針1之穿出，如圖21所示，右側之針2b與常規之縫製時同樣地成為捕捉彎針線10的狀態，另一方面，左側之針2a成為捕捉左側之針線線環20a2的狀態。 Further, the looper 1 performs a rightward retracting operation together with the lowering of the needles 2a and 2b, and passes through the captured needle thread loop 20a2. As shown in Fig. 21, the needle 2b on the right side is in a state of capturing the looper thread 10 as in the case of the conventional sewing, and the needle 2a on the left side serves as a loophole loop for capturing the left side. The status of 20a2.

該狀態下，彎針1轉換為左進，針2a、2b轉換為上升。如圖22所示，左進之彎針1捕捉針線線環20a2、20b2，上升之針2a、2b向縫製縫料之上方穿出。藉此，彎針1所捕捉之針線20a對之前捕捉之針線線環20a2利用針線20a進行環套，即所謂自連。 In this state, the looper 1 is switched to the leftward, and the needles 2a and 2b are switched to rise. As shown in Fig. 22, the left-handed looper 1 catches the needle thread loops 20a2, 20b2, and the raised needles 2a, 2b are pierced above the sewing material. Thereby, the needle thread 20a caught by the looper 1 is looped by the needle thread 20a to the previously caught needle thread loop 20a2, that is, so-called self-joining.

1針量之縫製動作後，於針2a、2b上升至上止點近旁、彎針1到達左進端近旁之狀態結束。此後，於圖16之S5時間點，若向控制部8輸入切線訊號23，則對切線裝置5之切線用氣缸48提供動作指令而使該切線用氣缸48進行既定動作。藉此，透過往復驅動移動機構70而使切線裝置5如圖12所示移動至靠落針位置A、A之一側之外部位置即前述進入位置P1為止。此後，進行切線動作。以下根據圖23對該切線動作進行詳細說明。 After the sewing operation of one stitch, the needles 2a and 2b are raised to the vicinity of the top dead center, and the state in which the looper 1 reaches the left end is completed. Thereafter, when a tangent signal 23 is input to the control unit 8 at time S5 in Fig. 16, an operation command is given to the tangent cylinder 48 of the thread cutting device 5 to make an operation command. This tangential cylinder 48 performs a predetermined operation. As a result, the tangential device 5 is moved to the outer position on the one side of the needle drop positions A and A, that is, the entry position P1, as shown in FIG. 12 by the reciprocating drive mechanism 70. Thereafter, a tangential action is performed. The tangential operation will be described in detail below with reference to Fig. 23 .

首先，如圖23(a)所示，縫紉結束時，切線裝置5移動至靠落針位置之一側之外部位置即前述進入位置P1為止後，如圖23(b)所示，僅使可動切刀50自前述進入位置P1向靠落針位置之另一側之外部位置向箭頭x方向進行往行驅動移動。藉由該往行驅動移動，如圖23(c)所示，當可動切刀50前端側之彎針線捕捉部50a剛超過跨及彎針1之前端附近與縫製縫料W之背面側之間的彎針線10後，可動切刀50之移動方向立即反轉，於前述彎針線捕捉部50a鉤掛且捕捉突出於縫製縫料W之背面側之彎針線部10a。 First, as shown in Fig. 23 (a), when the sewing is completed, the thread cutting device 5 is moved to the outer position on the one side of the needle drop position, that is, the entrance position P1, and as shown in Fig. 23 (b), only the movable portion is movable. The cutter 50 is driven to move in the direction of the arrow x from the aforementioned entry position P1 to the outer position on the other side of the needle drop position. As shown in Fig. 23(c), when the looper catching portion 50a on the distal end side of the movable cutter 50 is just beyond the front end of the spanning looper 1 and the back side of the sewing material W, Immediately after the looper thread 10, the moving direction of the movable cutter 50 is reversed, and the looper thread catching portion 50a is hooked and catches the looper thread portion 10a which protrudes from the back side of the sewing material W.

接著，如圖23(d)所示，可動切刀50自靠前述落針位置之另一側之外部位置往前述進入位置P1向箭頭y方向返行驅動移動，當該返行驅動移動時於針線捕捉部50b鉤掛且捕捉突出於縫製縫料W之背面側的左右之針線部20a1、20b1。而且，藉由使可動切刀50進一步向箭頭y方向返行驅動移動，從而如圖23(e)所示，利用各捕捉部50a、50b與固定切刀51之滑接而切斷由前述針線捕捉部50b捕捉之針線部20a1、20b1及由彎針線捕捉部50b捕捉之彎針線部10a。 Next, as shown in FIG. 23(d), the movable cutter 50 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 entry position P1, and when the return drive is moved The needle thread catching portion 50b is hooked and catches the left and right needle thread portions 20a1 and 20b1 that protrude from the back side of the sewing material W. Further, when the movable cutter 50 is further driven to move in the direction of the arrow y, the needle thread is cut by the sliding contact between the respective catching portions 50a and 50b and the fixed cutter 51 as shown in Fig. 23(e). The needle thread portions 20a1 and 20b1 captured by the catching portion 50b and the looper thread portion 10a captured by the looper thread catching portion 50b.

此後，如圖23(f)所示，針2a、2b向針板12之上方移動，且保持於彎針1之彎針線10之端部彈性卡夾保持於可動切刀50與彎針線卡夾構件52之間。 Thereafter, as shown in Fig. 23(f), the needles 2a, 2b are moved above the needle plate 12, and the elastic clips held at the end of the looper thread 10 of the looper 1 are held by the movable cutter 50 and the looper clip. Between members 52.

彎針線回拉力賦予裝置84持續動作直至上述之切線動作結束為止，且向自彎針1之前端延伸至縫製縫料之彎針線10持續賦予既定的回拉力。藉此，如圖22及圖24所示，於1針量之縫製動作後，針2a、2b上升至上止點近旁，隨之，位於彎針1後側(圖24中為近前側)之針線20a、20b如箭頭d所示向下方移動，即便如此，彎針線10亦未鬆弛，故該彎針線10不會滑接於針線20a、20b而被捲入至彎針1下方。 The looper return tension applying device 84 continues to operate until the above-described tangential operation is completed, and the predetermined looping force is continuously applied to the looper thread 10 extending from the front end of the looper 1 to the sewing material. As a result, as shown in FIG. 22 and FIG. 24, after the sewing operation of one stitch, the needles 2a and 2b are raised to the vicinity of the top dead center, and accordingly, the needles are located on the rear side of the looper 1 (the front side in FIG. 24). The 20a and 20b move downward as indicated by the arrow d. Even if the looper thread 10 is not slack, the looper thread 10 is not slipped to the needle threads 20a and 20b and is caught under the looper 1.

故當切線裝置5接著作動，且如圖23(b)、(c)所示，使可動切刀50自接近前述彎針1之朝向左前方的進入位置向靠落針位置之另一側(左側)之外部位置向箭頭x方向往行驅動移動時，如圖25所明示般，可動切刀50前端側之彎針線捕捉部50a能確實地鉤掛跨及彎針1之前端附近與縫製縫料W之背面側之間的彎針線10，且可動切刀50之針線捕捉部50b能確實地鉤掛針線20a、20b從而可藉由與固定切刀51之滑接而確實地進行切斷，被切斷之彎針線10之端部確實地卡夾保持於可動切刀50與彎針線卡夾構件52之間。 Therefore, when the thread cutting device 5 is attached, as shown in FIGS. 23(b) and (c), the movable cutter 50 is brought from the approaching position toward the left front of the looper 1 toward the other side of the needle drop position ( When the external position of the left side is driven in the direction of the arrow x, as shown in FIG. 25, the looper catching portion 50a on the distal end side of the movable cutter 50 can reliably hook the hem and the vicinity of the front end of the looper 1 and the sewing seam. The looper thread 10 between the back sides of the material W, and the needle thread catching portion 50b of the movable cutter 50 can securely hook the needle thread 20a, 20b so that the cutting can be surely performed by sliding contact with the fixed cutter 51. The end portion of the cut looper thread 10 is surely clamped between the movable cutter 50 and the looper clip member 52.

故能避免因自連後之彎針線10之鬆弛所致的切斷不良及切斷後之彎針線保持之不良狀況的發生，能使下一縫製按規定般切實地、且外觀良好地進行。 Therefore, it is possible to avoid the occurrence of a problem of the cutting failure due to the slack of the looper thread 10 after the self-joining and the occurrence of the problem of the looper thread after the cutting, and it is possible to carry out the next sewing as a rule and reliably.

以上之線切斷動作結束後，切線裝置5透過往復驅動移動機構70移動至圖11(A)、(B)所示退避位置P2且以不妨礙彎針1之移動的傾斜姿勢等待下一縫製。另一方面，控制部8待機直至輸入有針線挑去訊號24為止，若於圖16之S6時間點輸入有針線挑去訊號24，則向空氣刷82輸出動作指令而使該空氣刷82動作。該空氣刷82吹出空氣，使連續於針 2a、2b之針線20a、20b之切斷端部跳起。此後，控制部8於圖16之S7時間點向壓布氣缸81輸出動作指令而使該壓布氣缸81動作，使按壓構件自針板12之上表面上升，藉此，取出利用自連防止綻線的縫製縫料W，準備進行下一縫製。 After the above-described line cutting operation is completed, the thread cutting device 5 is moved to the retracted position P2 shown in FIGS. 11(A) and (B) by the reciprocating drive moving mechanism 70, and waits for the next sewing in an inclined posture that does not hinder the movement of the looper 1. . On the other hand, the control unit 8 stands by until the needle thread picking up signal 24 is input, and when the needle thread picking up signal 24 is input at the time point S6 of FIG. 16, the operation command is output to the air brush 82, and the air brush 82 is operated. The air brush 82 blows air to make it continuous with the needle The cut ends of the needle threads 20a, 20b of 2a, 2b jump. Thereafter, the control unit 8 outputs an operation command to the pressing cylinder 81 at the time point S7 of Fig. 16 to operate the pressing cylinder 81, and raises the pressing member from the upper surface of the needle plate 12, thereby taking out the self-linking prevention. The sewing material W of the thread is prepared for the next sewing.

於上述用於防綻線之1針量之縫製動作中，如圖26所示，彎針線10穿過線跡M最後形成於縫製縫料W之背面的右側之針線線環20b2內，當防綻線之1針量之縫製動作時於自縫製縫料W之背面穿出的右側之針線20b前方折回，再次穿過右側之最後的針線線環20b2後引出且被切斷。 In the sewing operation for the one-needle amount of the anti-friction line described above, as shown in FIG. 26, the looper thread 10 is passed through the stitch M and finally formed in the right-hand stitching loop 20b2 on the back side of the sewing material W. In the sewing operation of one stitch of the fray, the right needle thread 20b which is passed through the back surface of the sewing material W is folded back, passes through the last needle thread loop 20b2 on the right side, and is taken out and cut.

另一方面，於用於防綻線之1針量之縫製動作時，自縫製縫料W之背面穿出的左側之針線部20a1穿過接續常規之縫製時之最後繼續形成於縫製縫料W之背面的最後的針線線環20a2內，將該最後的針線線環20a2自連，形成單環縫合之線跡M。故彎針線10被針線20a與最後的針線線環20b2強力地按壓，如圖26所示，被限制於跨及左側之最後的針線線環20b2與前一次形成之針線線環20c之間的狀態。即使對彎針線部10a施加任一方向之力均能維持該限制，故能防止產生雙環縫合之線跡M特有的綻線。 On the other hand, at the time of the sewing operation for the one-thread amount of the anti-friction thread, the left needle thread portion 20a1 which is passed through the back surface of the sewing material W is continuously formed in the sewing material W at the time of the subsequent sewing. In the last needle thread loop 20a2 on the back side, the last needle thread loop 20a2 is self-joined to form a single loop stitched stitch M. Therefore, the looper thread 10 is strongly pressed by the needle thread 20a and the last needle thread loop 20b2, as shown in Fig. 26, and is restricted to the state between the last stitch loop 20b2 across the left side and the previously formed stitch loop 20c. . Even if the force is applied to the looper portion 10a in any direction, the restriction can be maintained, so that the fray characteristic peculiar to the stitch M of the double loop stitch can be prevented.

又，於用於防綻線之1針量之縫製動作中，前述送料減少機構83中之送料齒對縫製縫料之送料量小於常規之縫製時之送料量，藉此，能使自連前之互連時之線跡之間距小於之前互連時之線跡之間距。藉此，能強化左側之針線20a與左側之最後針線線環20a2之間的彎針線部10a之按壓，使防脫阻力增大。故當處於圖26所示狀態時，能藉由自連部、與伴隨使自連前之互連時之線跡之間距變小而產生的彎針線10之防脫阻抗之增大的加乘作用，來確實地防止雙環縫合之線跡M之綻線。 Further, in the sewing operation for the one-needle amount of the anti-friction line, the feed amount of the feed-to-sew sewing material in the feed reduction mechanism 83 is smaller than the feed amount at the time of the conventional sewing, thereby enabling the self-joining The spacing between the stitches at the time of interconnection is smaller than the distance between the stitches of the previous interconnection. Thereby, the pressing of the looper thread portion 10a between the needle thread 20a on the left side and the last needle thread loop 20a2 on the left side can be strengthened, and the detachment resistance can be increased. Therefore, when in the state shown in Fig. 26, the anti-de-impedance of the looper wire 10 which can be generated by the self-joining portion and the distance between the stitches accompanying the interconnection before the self-joining is increased. A large multiplication effect is used to surely prevent the line of the double loop stitching M.

再者，上述實施形態中，雖對於使前述彎針線保持體6以能與針線保持機構中之前述掛線鉤3一體地相對於彎針1進行接近及相離動作的方式構成的情況進行了說明，但亦能使彎針線保持體6以能與前述針線保持機構中之掛線鉤3分開地相對於彎針1進行接近及相離動作的方式構成。 Furthermore, in the above-described embodiment, the hook wire holding body 6 is configured to be able to perform the approach and the disengagement operation with respect to the looper 1 integrally with the hook hook 3 in the needle thread holding mechanism. Note that the hook thread holding body 6 can also be configured to be able to approach and separate from the looper 1 separately from the hook hook 3 in the needle thread holding mechanism.

又，上述實施形態中，雖對於使前述彎針線保持體6以進入彎針1之前側且前端之彎針線承接部6a於落針位置A、A之前方保持彎針線10的方式構成的情況進行了說明，但亦能以進入彎針1後側且前端之彎針線承接部6a於落針位置A、A後部保持彎針線10的方式構成。 In the above-described embodiment, the looper wire holding body 6 is configured such that the looper thread receiving portion 6a that enters the front side of the looper 1 and the tip end of the looper thread receiving portion 6a holds the looper thread 10 before the needle drop positions A and A. Although the description may be made, the looper thread receiving portion 6a that enters the rear side of the looper 1 and the end portion of the looper thread receiving portion 6a can hold the looper thread 10 at the rear of the needle drop positions A and A.

進而，上述實施形態中，對於裝設防綻線裝置H之針板台11，對採用分割為左側針板台部11L與右側針板台部11R該兩部分之構成，藉此提高防綻線裝置H對縫紉機縫台部B之組裝作業性或維護之容易性的情況進行了說明，但作為防綻線裝置H中之針板台11，亦可如先前技術中所示般構成為左右較長之一體物。 Further, in the above-described embodiment, the needle plate table 11 on which the anti-frozen line device H is attached is configured to be divided into the left needle plate base portion 11L and the right needle plate base portion 11R, thereby improving the anti-frozen line device. H describes the assembly workability and ease of maintenance of the sewing machine sewing machine portion B. However, the needle plate table 11 in the anti-frozen line device H may be configured to be long and left as shown in the prior art. One body.

又進而，上述各實施形態中，係以雙針之橫筒形雙環縫合縫紉機作為應用對象，但亦可應用於一針之橫筒形雙環縫合縫紉機或平縫式雙環縫合縫紉機。 Further, in each of the above-described embodiments, a double-needle transverse cylindrical double-loop stitching sewing machine is applied, but it can also be applied to a one-piece horizontal cylindrical double-loop sewing machine or a flat-slot double-loop sewing machine.

B‧‧‧縫紉機縫台部 B‧‧‧Sewing machine sewing machine

C‧‧‧縫紉機臂部 C‧‧‧Sewing machine arm

D‧‧‧縫紉機本體部 D‧‧‧Sewing machine body

5‧‧‧切線裝置 5‧‧‧Thread cutting device

12‧‧‧針板 12‧‧‧ needle board

70‧‧‧往復驅動移動機構 70‧‧‧Reciprocating drive moving mechanism

151‧‧‧支點軸 151‧‧‧ pivot shaft

152‧‧‧搖擺臂 152‧‧‧Swing arm

153‧‧‧致動器 153‧‧‧ actuator

153a‧‧‧彈簧 153a‧‧ ‧ spring

Claims

一種附有線跡綻線防止裝置之雙環縫合縫紉機，該雙環縫合縫紉機具備：針，其保持針線且上下活動；及彎針，其保持彎針線且能於與前述針之上下活動路徑大致正交之方向進退動作，且於進入動作時前述針捕捉形成於針板下之針線線環；利用該彎針所保持之彎針線使藉由前述彎針之進入動作捕捉之前述針線線環互連，藉此於縫製縫料上形成雙環縫合之線跡；該附有線跡綻線防止裝置之雙環縫合縫紉機具備：針線保持機構，其能相對於前述彎針進行接近及相離動作，於接近動作時使前述彎針所捕捉之針線線環保持於較前述針之下降位置靠前述彎針之進入端側；彎針線保持機構，其能相對於前述彎針進行接近及相離動作，於接近動作時使自前述彎針延伸至縫製縫料之彎針線保持於較前述針之下降位置靠前側或後側；及控制部，其以與前述針及彎針之動作、以及前述縫製縫料之送料動作相關聯地方式進行前述針線保持機構及前述彎針線保持機構之接近、相離動作之控制；該控制部於將前述彎針設於進入位置、將前述針設於上升位置而完成常規縫製後，使前述針線保持機構及前述彎針線保持機構進行接近動作而使前述針線線環保持於較前述針之下降位置靠前述彎針之進入端側的位置、且使彎針線保持於較前述針之下降位置靠前側或後側的位置，維持該狀態直至前述針穿過前述彎針所捕捉之針線線環而下降為止，其後，解除前述針線線環之前述位置保持，配合前述針之下降及上升、前述彎針之進退動作、及前述縫製縫料之送料動作而執行包括前述針穿過前述針線線環而下降之動作在內的至少1針量之縫製動作，藉此，利用前述針所保持之針線使前述彎針所保持之針線線環自連從而防止線跡綻線；該附有線跡綻線防止裝置之雙環縫合縫紉機具備：彎針線回拉力賦予裝置，其於前述自連後之前述彎針之進入動作時，鉤掛跨及且位於彎針線供給源裝置與前述彎針之間的彎針線部分且向側方移動，藉此，使前述彎針線部分彎折且向供給至前述彎針之彎針線部分賦予朝向前述彎針線供給源裝置側的回拉力。 A double loop stitching sewing machine with a wire hook fray preventing device, comprising: a needle holding a needle thread and moving up and down; and a looping needle holding the looper thread and being substantially orthogonal to the upper and lower movable paths of the needle The direction advances and retreats, and the needle captures a needle thread loop formed under the needle plate during the entering motion; and the looper thread held by the looper interconnects the needle thread loops captured by the entering motion of the looper The double-loop stitching sewing machine is formed on the sewing material; the double-loop stitching sewing machine with the wire line preventing device has a needle thread holding mechanism capable of approaching and separating from the bending needle, and The needle thread loop captured by the curved needle is held at the entry end side of the curved needle from the lowering position of the needle; the looper thread holding mechanism can perform the approaching and separating action with respect to the curved needle, and a looper line extending from the curved needle to the sewing material is held at a front side or a rear side of the lowering position of the needle; and a control portion for the needle and the curved needle And controlling the approaching and disengaging operation of the needle thread holding mechanism and the hook thread holding mechanism in association with the feeding operation of the sewing material; the control unit is configured to set the needle to the entering position and the needle After the conventional sewing is performed at the rising position, the needle thread holding mechanism and the hook thread holding mechanism are brought into close proximity, and the needle thread loop is held at a position closer to the entry end side of the looper than the lowering position of the needle, and Keeping the looper thread at a position closer to the front side or the rear side than the lowering position of the needle, maintaining the state until the needle passes through the needle thread loop caught by the looper, and then releasing the needle thread loop The position is maintained, and the needle is lowered and raised, and the aforementioned looper is advanced. Performing a retracting operation and a feeding operation of the sewing material to perform a sewing operation including at least one stitch of the needle passing through the needle thread loop, thereby making the bending by the needle thread held by the needle The needle thread loop held by the needle is self-connected to prevent the thread from being frayed; the double loop stitching sewing machine with the wire trace preventing device has: a looper pull back force imparting device, which enters the aforementioned looper after the self-joining And hooking the portion of the looper thread between the looper supply device and the looper and moving to the side, whereby the looper portion is bent and supplied to the looper portion of the looper A pullback force is applied to the side of the hook line supply source device.

如申請專利範圍第1項之附有線跡綻線防止裝置之雙環縫合縫紉機，其中，於前述彎針線供給源裝置與前述彎針之間，設有導引跨及且位於兩者間的彎針線部分以大致直線狀進行移動的至少2個彎針線導引件，前述彎針線回拉力賦予裝置係由搖擺臂、彎針線鉤掛部及致動器構成，該搖擺臂能以靠近前述彎針線供給源裝置之位置為支點軸於水平或大致水平面往復搖擺於對向於前述彎針線導引件的位置與使彎針線部分彎折的側方位置，該彎針線鉤掛部安裝於該搖擺臂之前端部且鉤掛靠近前述2個彎針線導引件中之靠前述彎針線供給源裝置側之彎針線導引件的彎針線部分，該致動器驅動前述搖擺臂以使其在前述兩個位置間往復搖擺。 A double-loop stitching sewing machine with a wire-wound line preventing device according to the first aspect of the invention, wherein a hook-and-loop line between the hook line supply device and the curved needle is provided between the bending needle and the curved needle a portion of the at least two looper guides that move in a substantially linear shape, wherein the looper pull-back force applying device is composed of a swing arm, a hook thread hooking portion, and an actuator, and the swing arm can be supplied close to the looper line The position of the source device is such that the fulcrum shaft reciprocates in a horizontal or substantially horizontal plane to a position opposite to the hook line guide and a side position at which the hook line portion is bent, and the hook line hook portion is mounted on the swing arm a front end portion and a hook portion of the hook thread guide member on the side of the hook line supply source device of the two hook thread guides, the actuator driving the swing arm to be in the foregoing two Reciprocating swing between positions.

如申請專利範圍第2項之附有線跡綻線防止裝置之雙環縫合縫紉機，其中，前述彎針線回拉力賦予裝置中之致動器係由彈簧與流體壓力氣缸之組合構成，該彈簧將前述搖擺臂自與前述彎針線導引件對向之位置往前述側方位置進行往行搖擺彈壓，該流體壓力氣缸抵抗該彈簧之彈壓力而對前述搖擺臂自前述側方位置往與前述彎針線導引件對向之位置進行返行搖擺驅動。 A double loop stitch sewing machine with a wire hook fray preventing device according to the second aspect of the invention, wherein the actuator in the looper thread pulling force imparting device is composed of a combination of a spring and a fluid pressure cylinder, the spring swinging The arm swings from the position opposite to the looper guide to the lateral position, and the fluid pressure cylinder resists the spring pressure to guide the swing arm from the lateral position to the looper The leader moves back to the position Swing drive.

如申請專利範圍第1項之附有線跡綻線防止裝置之雙環縫合縫紉機，其中，前述控制部於用於前述自連之前述至少1針量之縫製動作時的前述縫製縫料之送料之停止、或小於常規縫製時之送料量之送料動作下執行。 The double-loop stitching sewing machine with a wire-wound line preventing device according to the first aspect of the invention, wherein the control unit stops the feeding of the sewing material at the time of the sewing operation of the at least one stitch of the self-joining Or, it is executed under the feeding action of the feeding amount at the time of conventional sewing.

如申請專利範圍第1項之附有線跡綻線防止裝置之雙環縫合縫紉機，其中，前述彎針線保持機構能與前述針線保持機構一體地相對於前述彎針進行接近及相離動作。 The double loop sewing machine with a wire hook fray prevention device according to the first aspect of the invention, wherein the hook thread holding mechanism can perform the approaching and disengaging operation with respect to the looper integrally with the needle thread holding mechanism.

如申請專利範圍第1項之附有線跡綻線防止裝置之雙環縫合縫紉機，其中，前述針線保持機構具有掛線鉤及鉤致動器，該掛線鉤跨及遠離前述彎針之待機位置與接近前述彎針之掛線位置之間、以上下方向之支軸為中心於與針板大致平行之面內搖擺，該鉤致動器驅動該掛線鉤搖擺於前述待機位置與掛線位置，且進一步具備：止動機構，其配置於較該針線保持機構之掛線鉤遠離前述針板的位置，具有止動構件及控制該止動構件之停止及解除停止的止動致動器，該止動構件能使自掛線鉤之掛線位置往待機位置之搖擺暫時停止及解除停止，以使由前述掛線鉤於前述掛線位置捕捉之針線線環保持於前述掛線位置與待機位置之間的保持位置；及連結構件，其連動連結前述針線保持機構之掛線鉤與前述止動機構之止動構件；前述控制部選擇性地控制前述鉤致動器及止動致動器，且藉由與前述止動構件之抵接將由前述掛線鉤於前述掛線位置捕捉之針線線環保持於前述掛線位置與前述待機位置之間。 The double loop sewing machine with a wire hook fender prevention device according to the first aspect of the invention, wherein the needle thread holding mechanism has a hook hook and a hook actuator, and the hook line hooks away from the standby position of the looper a support shaft that is adjacent to the hook line position and in the upper and lower directions is centered on a plane substantially parallel to the needle plate, and the hook actuator drives the hook hook to swing to the standby position and the hanging position. Furthermore, the present invention further includes a stopper mechanism disposed at a position away from the needle plate from the hook of the needle thread holding mechanism, and having a stopper member and a stopper actuator for controlling the stop and release of the stopper member, The stopping member can temporarily stop and release the swing of the hanging position of the hook from the hanging position to the standby position, so that the sewing thread loop captured by the hanging hook at the hanging position is maintained at the hanging position and the standby position. And a connecting member that interlocks the hook of the needle thread holding mechanism and the stopping member of the stopping mechanism; the control unit selectively controls the hook actuator and The actuator is stopped, and the needle thread loop captured by the hook hook at the hanging position is held between the hanging line position and the standby position by abutting with the stopping member.