TWI412642B - Method and device for preventing thread blooming - Google Patents
Method and device for preventing thread blooming Download PDFInfo
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- TWI412642B TWI412642B TW97132938A TW97132938A TWI412642B TW I412642 B TWI412642 B TW I412642B TW 97132938 A TW97132938 A TW 97132938A TW 97132938 A TW97132938 A TW 97132938A TW I412642 B TWI412642 B TW I412642B
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Description
本發明是關於利用縫紉機在布上形成雙線鎖縫或平式連鎖縫時，防止線縫從縫合終端側綻開的線縫綻開防止方法及其裝置。The present invention relates to a method and apparatus for preventing a seam from being detached from a side of a sewing end when a double-thread lock seam or a flat seam is formed on a cloth by a sewing machine.
習知的線縫綻開防止裝置，已知有在縫製結束時環頂器擺動至前進狀態下使環頂線勾掛鉤卡合於環狀縫針線至環頂器的環頂線後驅動1針量縫紉機，然後，由割線鉤捕捉其環頂線的卡合部、環頂器所捕捉的環狀縫針線及環狀縫針線至環頂器的環頂線，以配置在環頂器後退位置側的割線刀(承刀)切斷各線的例子(例如，參照專利文獻1)。另，環頂線勾掛鉤或割線鉤是配置在縫紉機床內。The conventional seam preventing device is known to drive a needle amount after the looper is swung to the forward state at the end of sewing, so that the loop top hook hook is engaged with the loop stitch to the loop top line of the ring top device. The sewing machine, then, the nip line hook captures the engagement portion of the ring top line, the loop stitch thread captured by the ring top device, and the loop stitch line to the ring top line of the ring top device to be disposed on the side of the ring top retracting position An example in which the secant knife (cutter) cuts each line (for example, refer to Patent Document 1). In addition, the ring top hook hook or the secant hook is disposed in the sewing machine.
[專利文獻1]日本特開2006-314762號公報(第6頁～第11頁，第8圖～第12圖)[Patent Document 1] JP-A-2006-314762 (pages 6 to 11, page 8 to Figure 12)
然而，習知的線縫綻開防止裝置，環狀縫針線至環頂器的環頂線的卡合是由複數的鉤即是由環頂線勾掛鉤或割線鉤執行，以致零件數量變多的同時構成零件會散佈在縫紉機內。However, the conventional seam preventing device, the engagement of the loop stitch to the loop top line of the ring top is performed by a plurality of hooks, that is, by a loop top hook hook or a secant hook, so that the number of parts is increased. At the same time, the components will be scattered in the sewing machine.
因此，本發明的課題，是以提供一種可使構成零件整合配置在縫紉機床內的同時能夠防止線縫從縫合終端側綻開的線縫綻開防止方法及其裝置為目的。Therefore, an object of the present invention is to provide a method and apparatus for preventing a seam from being detached from a sewing end of a sewing machine while integrally arranging the components in the sewing machine.
為了達成上述目的，本發明的縫紉機，配備有：插通有縫針線可上下活動的至少1支的針；及夾著該針進退擺動在前進位置和後退位置之間可插通上述縫針線和雙線鎖縫形成用之環頂線的環頂器，其特徵為，具備有線切斷器及路徑變更手段，其線切斷器是包括配置在環頂器後退位置側的承刀及前端部具有線捕捉用的鉤部從承刀往復動的鉤，其路徑變更手段是可使鉤的往復動路徑變更成第1路徑或第2路徑，構成為在縫製結束時環頂器位於前進位置的狀態下，從承刀使鉤沿著第1路徑往動，使該鉤卡合於環頂器所捕捉的環狀縫針線至環頂器的環頂線，接著利用該鉤的復動由承刀切斷該環頂線的該鉤卡合的部份的同時，經由該切斷使殘留在布側的環頂線固定在環頂器所捕捉的環狀縫針線的線圈內，於鉤往復動後使鉤的往復動路徑從第1路徑變更成第2路徑的同時驅動1針量縫紉機再度使環頂器擺動至前進位置，從承刀使鉤沿著第2路徑往動，使該鉤進入卡合於環頂器所捕捉的環狀縫針線同時，卡合於環頂器所捕捉的環狀縫針線至環頂器的環頂線，接著利用該鉤的復動由承刀切斷各線的該鉤卡合的部份。In order to achieve the above object, the sewing machine of the present invention is provided with: at least one needle inserted through the needle thread to move up and down; and the needle advance and retreat to be inserted between the forward position and the retracted position to insert the needle thread and A ring top device for forming a ring top line for double-line lock stitching, comprising: a wire cutter and a path changing means, wherein the wire cutter includes a cutter and a front end portion disposed on a side of a retracted position of the ring top device The hook having the wire catching hook reciprocates from the receiving blade, and the path changing means is configured to change the reciprocating path of the hook into the first path or the second path, and the ring top is positioned at the advanced position at the end of the sewing. In the state, the hook is moved from the first path along the first path, so that the hook is engaged with the annular stitch thread captured by the ring top device to the ring top line of the ring top device, and then the double action of the hook is utilized. The knife cuts the portion of the loop line that is engaged with the hook, and the ring top line remaining on the cloth side is fixed in the loop of the loop stitch caught by the ring top by the cut, and the hook is reciprocated After the movement, the reciprocating path of the hook is changed from the first path to the second path. Drive the 1-needle sewing machine to swing the ring-topper to the forward position again, and move the hook along the second path from the bearing knife, so that the hook enters the annular stitch thread caught by the ring-topper, and is engaged at the same time. The loop stitch caught by the ring topper is routed to the top line of the ring top, and then the hooking of the hook is used to cut the hooked portion of each line by the cutter.
另外，線切斷器最好是由：固定在鉤沿著長向具有第1長孔和第2長孔的動作片；各別插通在第1長孔及第2長孔可支撐著動作片使動作片滑動的圓狀支撐構件；及動作片驅動用的第1驅動部所構成為佳，路徑變更手段最好是由：形成在第1長孔或第2長孔的一方沿著長向形成相向的第1路徑用的第1引導面及第2路徑用的第2引導面；及連結於動作片可使第1引導面或第2引導面卡合在支撐構件的第2驅動構件所構成為佳。Further, it is preferable that the wire cutter is an operation piece fixed to the hook having the first long hole and the second long hole along the longitudinal direction; and each of the wire insertion holes is supported by the first long hole and the second long hole. Preferably, the circular support member for sliding the operation piece and the first drive unit for driving the action piece are preferably formed, and the path changing means is preferably formed on one side of the first long hole or the second long hole. a first guiding surface for forming a first path facing each other and a second guiding surface for a second path; and a second driving member that is coupled to the operating piece to engage the first guiding surface or the second guiding surface with the supporting member The composition is better.
根據本發明時，因是在縫製結束時環頂器擺動至前進位置的狀態下從承刀使鉤沿著第1路徑往復動而由承刀切斷該環頂線卡合部的同時，經由該切斷使殘留在布側的環頂線固定在最終的環狀縫針線的線圈內，所以即使拉扯該環頂線但線縫還是不會綻開。此外，因是在鉤沿著第1路徑往復動後才驅動1針量縫紉機，同時是在鉤往復動後使鉤的往復動路徑從第1路徑變更成第2路徑，然後，從承刀使鉤沿著第2路徑往復動由承刀切斷環頂器所捕捉的環狀縫針線及環狀縫針線至環頂器的環頂線，所以即使鉤沒有散佈還是能夠切斷環頂器所捕捉的環狀縫針線及環狀縫針線至環頂器的環頂線。According to the present invention, the hook is reciprocated along the first path from the blade in a state where the ring gear is swung to the advanced position at the end of the sewing, and the ring top line engaging portion is cut by the blade while passing through the blade. This cutting fixes the ring top line remaining on the cloth side in the loop of the final loop stitch, so that the seam does not swell even if the loop top line is pulled. Further, since the one-needle amount sewing machine is driven after the hook reciprocates along the first path, the hook reciprocating path is changed from the first path to the second path after the hook is reciprocated, and then the carrier is made from the carrier. The hook reciprocates along the second path, and the annular stitch thread and the loop stitch thread caught by the ring cutter are cut by the cutter to the ring top line of the ring top device, so that the loop top device can be cut even if the hook is not scattered. Capture the loop stitch and loop stitch to the top line of the ringer.
另，當可使鉤的往復動路徑變更成第1路徑或第2路徑的路徑變更手段是構成為包括相向形成在鉤固定用托座長孔的第1引導面及第2引導面時，就能夠使新的構成追加停留在最小限度。In addition, when the path changing means for changing the reciprocating path of the hook to the first path or the second path is configured to include the first guiding surface and the second guiding surface which are formed opposite to each other in the hook fixing bracket long hole, Keep the new composition added to a minimum.
以下，根據圖面對本發明的實施形態進行說明。本發明所應用的縫紉機，配備有機臂部1A和機床部1B，機床部1B是前端側具備缸筒床1b。缸筒床1b，具備：可上下前後四方運動將布朝箭頭符號F方向輸送的送布齒2；可左右前後橢圓運動的環頂器3；及固定在螺絲孔4a的挺針板4(參照第2圖)。缸筒床1b上方設有針棒7。針棒7是連結於機臂部1A內的針棒上下驅動機構(未圖示)，左針5及右針6是安裝在針棒7下端。左右的針5、6的前端部是利用針棒7上下運動使其間歇性貫通挺針板。環頂器3是由螺絲3c固定在環頂軸3a前端的環頂座3b，環頂軸3a是連動於針棒7上下運動朝送布方向F正交方向擺動。即，環頂器3是在挺針板4下方夾著針5、6前端部在前進位置和後退位置進退擺動。當左右的針5、6和環頂器3合作行動時，如第5圖至第11圖所示，由插通在左右針5、6的縫針線8、9及插通在環頂器3的環頂線10在布W上形成雙線鎖縫S。另，縫針線8、9及環頂線10是經由賦予張力用的夾線器TT連接於線供應源。此外，如第14圖所示，夾線器TT具有習知的鬆線具TL，由鬆線具TL動作使各線8、9、10的張力賦予一起解除。Hereinafter, embodiments of the present invention will be described with reference to the drawings. The sewing machine to which the present invention is applied is provided with an organic arm portion 1A and a machine tool portion 1B, and the machine tool portion 1B is provided with a cylinder bed 1b on the front end side. The cylinder bed 1b includes: a feed dog 2 that can transport the cloth in the direction of the arrow F in the up and down direction, a ringer 3 that can move left and right in an elliptical shape, and a needle jack 4 that is fixed to the screw hole 4a (refer to Figure 2). A needle bar 7 is provided above the cylinder bed 1b. The needle bar 7 is a needle bar vertical drive mechanism (not shown) that is coupled to the arm portion 1A, and the left needle 5 and the right needle 6 are attached to the lower end of the needle bar 7. The front end portions of the left and right needles 5, 6 are moved up and down by the needle bar 7 to intermittently penetrate the needle plate. The ring top device 3 is a ring top seat 3b fixed to the front end of the ring top shaft 3a by a screw 3c. The ring top shaft 3a is oscillated in the orthogonal direction of the feed direction F in conjunction with the vertical movement of the needle bar 7. That is, the ring top device 3 swings forward and backward in the forward position and the retracted position with the front end portions of the needles 5 and 6 interposed below the needle jack 4 . When the left and right needles 5, 6 and the ringer 3 cooperate, as shown in Figs. 5 to 11, the needle threads 8, 9 inserted in the left and right needles 5, 6 and the needle ring 3 are inserted. The top line 10 of the ring forms a double-line lock stitch S on the cloth W. Further, the needle threads 8, 9 and the ring top line 10 are connected to the line supply source via a tensioner TT for imparting tension. Further, as shown in Fig. 14, the gripper TT has a conventional loosening device TL, and the tension of each of the wires 8, 9, 10 is released by the loosening device TL operation.
缸筒床1b的基部側(右側)，設有由下述構成形成的線切斷器11。線切斷器11的承刀12是配置在環頂器3的後退位置側，由螺絲15使其和鉤導件13及板簧14一起固定在托座16前端部。隔著墊圈18固定在機床內蓋17的螺絲19是配置在托座16基端部上形成的長孔16a內，托座16是由墊圈18支撐成可轉動並且可滑動。另外，插通在托座16前端部的螺絲20、20貫通紗保持彈簧21的長孔21a栓入在固定片22的螺絲孔22a。托座16的基端部形成有凹部16b。該凹部16b抵接有線彈簧23的一端，線彈簧23的另一端是由螺絲24固定在機床內蓋17。藉此使托座16於機床內蓋17經常被彈推往固定的卡止片25側。A line cutter 11 formed of the following configuration is provided on the base side (right side) of the cylinder bed 1b. The receiving blade 12 of the wire cutter 11 is disposed on the retracted position side of the ring top device 3, and is fixed to the front end portion of the bracket 16 by the screw 15 together with the hook guide 13 and the leaf spring 14. The screw 19 fixed to the machine tool inner cover 17 via the washer 18 is disposed in the long hole 16a formed on the base end portion of the bracket 16, and the bracket 16 is rotatably and slidably supported by the washer 18. Further, the long holes 21a of the screws holding springs 21 inserted through the screws 20 and 20 inserted into the front end portion of the bracket 16 are inserted into the screw holes 22a of the fixing piece 22. The base end portion of the bracket 16 is formed with a recess 16b. The recess 16b abuts against one end of the wire spring 23, and the other end of the wire spring 23 is fixed to the machine tool inner cover 17 by a screw 24. Thereby, the bracket 16 is often pushed to the fixed locking piece 25 side of the machine tool inner cover 17.
承刀12和鉤導件13之間，配置有可滑動的鉤26。該鉤26在腹側前端部具有環頂線用鉤部26a和縫針線用鉤部26b，鉤26的背側是大致形成為直線狀。鉤26的基端部是由螺絲28固定在動作片27。動作片27具有寬幅長沿著長向延伸的第1長孔29及第2長孔30，螺絲31、33是安裝在機床內蓋17。螺絲31所插通的圓狀套環32是配置在第1長孔29內，螺絲33所插通的圓狀套環34是配置在第2長孔30。即，動作片27是由套環32、34支撐成可滑動。動作片27是連結於由螺絲35支撐在機床內蓋17成可轉動的連桿構件36，連桿構件36是連結於第1氣缸筒37的活塞桿37a。當第1氣缸筒37的活塞桿37a進推時，就會使動作片27驅動。此外，動作片27形成有突片27a，托座16形成有突片27a卡合用的卡合部16c。另，為了讓突片27a和卡合部16c能夠適度卡合最好是將托座16的一部份可滑動地卡合在動作片27兩側面。Between the cutter 12 and the hook guide 13, a slidable hook 26 is disposed. The hook 26 has a loop top hook portion 26a and a needle thread hook portion 26b at the front end portion of the front side, and the back side of the hook 26 is formed substantially in a straight line shape. The base end portion of the hook 26 is fixed to the action piece 27 by a screw 28. The operation piece 27 has a first long hole 29 and a second long hole 30 extending in the longitudinal direction in a wide length, and the screws 31 and 33 are attached to the machine tool inner cover 17. The circular collar 32 through which the screw 31 is inserted is disposed in the first elongated hole 29, and the circular collar 34 through which the screw 33 is inserted is disposed in the second elongated hole 30. That is, the action piece 27 is slidably supported by the collars 32, 34. The operation piece 27 is connected to a link member 36 that is rotatably supported by the machine tool inner cover 17 by a screw 35, and the link member 36 is a piston rod 37a that is coupled to the first cylinder barrel 37. When the piston rod 37a of the first cylinder barrel 37 is pushed in, the operation piece 27 is driven. Further, the operation piece 27 is formed with a protruding piece 27a, and the bracket 16 is formed with an engaging portion 16c for engaging the protruding piece 27a. Further, in order to allow the tab 27a and the engaging portion 16c to be properly engaged, it is preferable to slidably engage a portion of the bracket 16 on both sides of the action piece 27.
動作片27的第2長孔30具備有沿著長向成相向的第1引導面30a及第2引導面30b。第1引導面30a是由三方向連續延伸的凸輪面構成的同時第2引導面30b是由二方向連續延伸的凸輪面所構成，藉此使兩引導面30a、30b的間隔在中途變寬。此外，動作片27的基端部是由螺絲39固定有線精工彈簧38的一端。線精工彈簧38的另一端是固定在第2氣缸筒40的活塞桿40a所固定的長角材41。當第2氣缸筒40的活塞桿40a進退時，第2長孔30的第1引導面30a或第2引導面30b會卡合於螺絲33所支撐的套環34。The second long hole 30 of the operation piece 27 includes a first guide surface 30a and a second guide surface 30b that face each other in the longitudinal direction. The first guide surface 30a is composed of a cam surface that continuously extends in three directions, and the second guide surface 30b is constituted by a cam surface that continuously extends in two directions, whereby the interval between the two guide surfaces 30a and 30b is widened in the middle. Further, the base end portion of the action piece 27 is one end of the wire precision spring 38 fixed by a screw 39. The other end of the wire precision spring 38 is a long angle member 41 fixed to the piston rod 40a of the second cylinder barrel 40. When the piston rod 40a of the second cylinder barrel 40 advances and retracts, the first guide surface 30a or the second guide surface 30b of the second elongated hole 30 is engaged with the collar 34 supported by the screw 33.
另，動作片27是由螺絲43固定有線道導件42，機床內蓋17的端部固定有U字型導線器44。該線道導件42和環頂器3之間固定配置有習知的絡線台45，在U字型導線器44和夾線器TT之間配置有小夾線器46。絡線台45具有一對L字型導線器45a、45a，利用絡線台45出沒的蛤蜊狀凸輪(未圖示)是在出現時卡合於L字型導線器45a、45a之間的環頂線10。小夾線器46，具備：由彈簧47壓接的2片夾線片48、48；及作用時使爪49a介於兩夾線片48、48之間的解除構件49。彈簧47產生的夾線片48、48壓接力是比配置在線供應源側的夾線器TT壓接力還強，當該壓接力作用在環頂線10時不會讓環頂線10從夾線器TT拉往環頂器3側。另，通常是讓爪49a介於小夾線器46的夾線片48、48之間，使張力不會賦予 在夾線片48、48之間的環頂線10。Further, in the operation piece 27, the wire guide 42 is fixed by a screw 43, and a U-shaped wire guide 44 is fixed to the end of the machine tool cover 17. A conventional cable table 45 is fixedly disposed between the wire guide 42 and the roofer 3, and a small wire gripper 46 is disposed between the U-shaped wire guide 44 and the tensioner TT. The cable table 45 has a pair of L-shaped wire guides 45a and 45a, and a dome-shaped cam (not shown) that is used by the cable table 45 is a ring that is engaged between the L-shaped wire guides 45a and 45a when present. Top line 10. The small wire gripper 46 includes two pieces of tensioning pieces 48 and 48 that are pressed by the spring 47, and a releasing member 49 that causes the claws 49a to be interposed between the two clamping pieces 48 and 48 during operation. The crimping force of the clamping pieces 48, 48 generated by the spring 47 is stronger than the crimping force of the tensioner TT disposed on the line supply source side, and does not allow the ring top line 10 to be drawn from the line when the crimping force acts on the ring top line 10. The TT is pulled to the side of the ring top 3. In addition, it is common to have the claws 49a interposed between the tensioning pieces 48, 48 of the small wire gripper 46 so that the tension is not imparted. The top line 10 between the tensioning sheets 48, 48.
其次，一邊參照第5圖至第12圖一邊進行本發明相關的線縫綻開防止裝置的動作說明。Next, the operation of the seam warpage preventing device according to the present invention will be described with reference to Figs. 5 to 12 .
隨著布W縫製結束的接近，如第5圖所示，當針5、6位於上死點，環頂器3位於前進位置時，啟動第1氣缸筒37使活塞桿37a朝箭頭符號X方向後退。藉活塞桿37a的後退會讓連桿構件36繞著螺絲35旋轉，使動作片27朝挺針板4側前進。此時，第2氣缸筒40的活塞桿40a為前進著，動作片27是在第2長孔30的第1引導面30a卡合於螺絲33所支撐之套環34的狀態下移動。此外，隨著動作片27的前進會讓托座16一起進出至途中即直到接觸卡止片25為止。接著，當使動作片27進出時，動作片27的突片27a會從托座16的卡合部16c離開，如第6圖所示，使鉤26從承刀12和線保持彈簧21之間進出。該動作片27的連續進出動作使鉤26沿著第12圖中一點虛線所示的第1路徑(a→b1→c→d)即沿著一邊通過環頂器3所捕捉的環狀縫針線8L、9L的線圈外一邊卡合於環狀縫針線8L至環頂器3的環頂線10a之路徑形成往動。另，沿著第1路徑的鉤26的往動結束時，鉤26的背側會接觸於環狀縫針線8L、9L，鉤26的鉤部26a是成為通過環頂線10a旁的狀態。As the cloth W finishes approaching, as shown in Fig. 5, when the needles 5, 6 are at the top dead center and the ringer 3 is in the advanced position, the first cylinder barrel 37 is activated to cause the piston rod 37a to face the arrow X direction. Back. The retraction of the piston rod 37a causes the link member 36 to rotate about the screw 35 to advance the action piece 27 toward the needle plate 4 side. At this time, the piston rod 40a of the second cylinder tube 40 is moved forward, and the operation piece 27 is moved in a state in which the first guide surface 30a of the second elongated hole 30 is engaged with the collar 34 supported by the screw 33. Further, as the advancement of the action piece 27, the bracket 16 is allowed to come in and out together until the contact with the locking piece 25. Next, when the action piece 27 is moved in and out, the tab 27a of the action piece 27 is separated from the engaging portion 16c of the bracket 16, and as shown in Fig. 6, the hook 26 is made between the blade 12 and the wire holding spring 21 In and out. The continuous movement operation of the operation piece 27 causes the hook 26 to follow the first path (a → b1 → c → d) indicated by a dotted line in Fig. 12, that is, the annular stitch line caught by the ring top device 3 along one side. The outer side of the 8L and 9L coils is engaged with the loop stitch 8L to the loop top line 10a of the ring top 3 to form a forward movement. Further, when the forward movement of the hook 26 along the first path is completed, the back side of the hook 26 comes into contact with the annular needle thread 8L, 9L, and the hook portion 26a of the hook 26 is in a state of being passed by the ring top line 10a.
然後，啟動第1氣缸筒37使活塞桿37a朝箭頭符號Y方向進出。活塞桿37a的進出會讓連桿構件36繞著螺絲35旋轉，使動作片27後退。此時，維持著活塞桿40a 的進出，使鉤26沿著第1路徑形成復動。該復動會讓鉤26的環頂線用鉤部26a將環狀縫針線8L至環頂器3的環頂線10a牽引至承刀12，由鉤部26a和承刀12的合作切斷該環頂線10a的卡合部份。該切斷會讓殘留在縫紉機側的環頂線10x由承刀12和線保持彈簧21夾持著，如第7圖所示，使殘留在布W側的環頂線10y端部不僅可固定在連接於右側針6的最終環狀縫針線9L的線圈內，還可固定在連接於左側針5的最終環狀縫針線8L的線圈內。當鉤26更加後退時動作片27的突片27a會卡合於托座16的卡合部16c，然後，動作片27和托座16會一起後退。Then, the first cylinder barrel 37 is activated to move the piston rod 37a in the direction of the arrow Y. The entry and exit of the piston rod 37a causes the link member 36 to rotate about the screw 35 to retract the action piece 27. At this time, the piston rod 40a is maintained. The entry and exit causes the hook 26 to re-enter along the first path. This double action causes the loop top line of the hook 26 to pull the loop stitch 8L to the ring top line 10a of the ring top 3 to the carrier 12 by the hook portion 26a, which is cut by the cooperation of the hook portion 26a and the cutter 12. The engaging portion of the ring top line 10a. This cutting causes the ring top wire 10x remaining on the sewing machine side to be held by the blade 12 and the wire holding spring 21, and as shown in Fig. 7, the end portion of the ring top wire 10y remaining on the cloth W side can be fixed not only The coil of the final loop stitch 9L connected to the right needle 6 can also be fixed in the loop of the final loop stitch 8L connected to the left needle 5. When the hook 26 is further retracted, the tab 27a of the action piece 27 is engaged with the engaging portion 16c of the bracket 16, and then the action piece 27 and the bracket 16 are retracted together.
動作片27和托座16一起後退，鉤26及承刀12的往復動結束後，啟動第2氣缸筒40使活塞桿40a後退，事先將第2長孔30的第2引導面30b形成為卡合在螺絲33所支撐之套環34的狀態。藉此使鉤26的往復動路徑從第1路徑變更成第2路徑。在第2氣缸筒40的啟動後驅動縫紉機，使針5、6下降的同時使環頂器3後退至後退位置(參照第8圖)。另，環頂器3後退時從環頂器3脫落的環狀縫針線8L、9L是逐漸收頭在布W上。繼續驅動縫紉機時，針5、6會經過下死點後上昇的同時環頂器3會從後退位置前進。此時，環頂器3會捕捉形成在針5、6後部的新環狀縫針線8LL、9LL，使殘留在縫紉機側的環頂線10x的一部份通過環狀縫針線8LL、9LL的線圈內。When the operation piece 27 and the holder 16 are retracted together, the reciprocating movement of the hook 26 and the receiving blade 12 is completed, the second cylinder tube 40 is activated to retract the piston rod 40a, and the second guiding surface 30b of the second long hole 30 is formed into a card in advance. The state of the collar 34 supported by the screw 33 is engaged. Thereby, the reciprocating path of the hook 26 is changed from the first path to the second path. After the start of the second cylinder barrel 40, the sewing machine is driven to lower the needles 5 and 6 and the ring top 3 is retracted to the retracted position (see Fig. 8). Further, the loop stitches 8L, 9L which are detached from the ring top 3 when the dome 3 is retracted are gradually closed on the cloth W. When the sewing machine is continued to be driven, the needles 5, 6 will rise after the bottom dead center and the end frame 3 will advance from the retracted position. At this time, the ring top 3 captures the new loop stitches 8LL, 9LL formed at the rear of the needles 5, 6, so that a part of the loop top line 10x remaining on the sewing machine side passes through the loop of the loop stitch 8LL, 9LL. Inside.
當針5、6再度到達上死點，環頂器3再度到達前進 位置之後，就使解除構件49的爪49a後退，使彈簧47產生的夾線片48、48壓接力賦予環頂線10。然後，啟動第1氣缸筒37使活塞桿37a朝箭頭符號X方向後退。活塞桿37a的後退會讓連桿構件36繞著螺絲35的周圍旋轉，使動作片27朝挺針板4側進出。此時，第2氣缸筒40的活塞桿40a為後退著，動作片27是在第2長孔30的第2引導面30b卡合於螺絲33所支撐之套環34的狀態下移動。此外，隨著動作片27的進出會讓托座16一起進出至途中即直到接觸於卡止片25為止。藉此，如第9圖所示，使鉤26和承刀12從待機位置移動至作用位置。When the needles 5, 6 reach the top dead center again, the ring top device 3 reaches the forward again. After the position, the claw 49a of the releasing member 49 is retracted, and the crimping force of the tension pieces 48, 48 generated by the spring 47 is given to the ring top line 10. Then, the first cylinder barrel 37 is activated to retract the piston rod 37a in the direction of the arrow symbol X. The retraction of the piston rod 37a causes the link member 36 to rotate around the screw 35, and the action piece 27 is moved in and out toward the needle plate 4 side. At this time, the piston rod 40a of the second cylinder tube 40 is retracted, and the operation piece 27 is moved in a state in which the second guide surface 30b of the second long hole 30 is engaged with the collar 34 supported by the screw 33. In addition, as the action piece 27 enters and exits, the bracket 16 is allowed to enter and exit together until the contact with the locking piece 25. Thereby, as shown in Fig. 9, the hook 26 and the receiving blade 12 are moved from the standby position to the acting position.
接著持續著動作片27進出時，動作片27的突片27a會從托座16的卡合部16c離開的同時鉤26會從承刀12和保持彈簧21之間進出，如第10圖所示，使殘留在縫紉機側的環頂線10x端部解放從線縫S的最末端垂下。該動作片27的連續進出動作會讓鉤26沿著第12圖中一點虛線所示的第2路徑(a→b2→c→d)即沿著可進入卡合於環頂器3所捕捉的環狀縫針線8LL、9LL同時可卡合於環狀縫針線8LL至環頂器3的環頂線10aa之路徑形成往動。另，於沿著第2路徑的鉤26的往動結束時鉤部26a、26b是成為通過環狀縫針線8LL、9LL的線圈內的狀態。另外，此時，線道導件42是和動作片27一起往環頂器3側進出，U字型導線器44和L字型導線器45間的環頂線10是由線道導件42處理。藉此使殘留在縫紉機側的環頂線10x從線縫S稍為被拉回，使其從線縫S垂下的垂下量變短。Then, when the operation piece 27 is continuously moved in and out, the tab 27a of the operation piece 27 is separated from the engagement portion 16c of the bracket 16, and the hook 26 enters and exits between the blade 12 and the holding spring 21, as shown in Fig. 10. The end portion of the ring top wire 10x remaining on the sewing machine side is liberated from the end of the seam S. The continuous movement of the action piece 27 causes the hook 26 to be captured along the second path (a → b2 → c → d) indicated by a dotted line in Fig. 12, that is, along the accessible to the ring top 3 The loop stitches 8LL, 9LL are simultaneously engageable in the path of the loop stitch 8LL to the loop top line 10aa of the ring top 3 to form a forward movement. Further, when the forward movement of the hook 26 along the second path is completed, the hook portions 26a and 26b are in a state of being passed through the loops of the loop stitches 8LL and 9LL. Further, at this time, the lane guide 42 comes into and out with the action piece 27 toward the side of the ring top 3, and the top line 10 between the U-shaped wire guide 44 and the L-shaped wire guide 45 is guided by the wire guide 42. deal with. Thereby, the ring top line 10x remaining on the sewing machine side is slightly pulled back from the seam S, and the amount of drooping from the seam S is shortened.
然後，啟動第1氣缸筒37使活塞桿37a朝箭頭符號Y方向進出。活塞桿37a的進出會讓連桿構件36繞著螺絲35的周圍旋轉，使動作片27後退。此時，活塞桿40a的後退是維持著，鉤26是沿著第2路徑復動。該復動使鉤26的環頂線用鉤部26a牽引環狀縫針線8LL至環頂器3的環頂線10aa，使環頂線用鉤部26b牽引環頂器3所捕捉的環狀縫針線8LL、9LL。每當以鉤部26b捕捉環狀縫針線8LL、9LL時，若能先啟動鬆線裝置TL，則能夠順暢執行環狀縫針線8LL、9LL的牽引。另，當鉤部26a、26b到達承刀12時該兩者的合作會切斷各線8LL、9LL、10aa的卡合部份。該切斷會讓最終殘留在縫紉機側的環頂線10z由承刀12和線保持彈簧21夾持，如第11圖所示，使環頂線的線屑(回絲)10xx固定在線縫S最末端。Then, the first cylinder barrel 37 is activated to move the piston rod 37a in the direction of the arrow Y. The entry and exit of the piston rod 37a causes the link member 36 to rotate around the screw 35 to retract the action piece 27. At this time, the retreat of the piston rod 40a is maintained, and the hook 26 is retracted along the second path. The double action causes the loop top line of the hook 26 to pull the loop stitch 8LL to the loop top line 10aa of the ring top 3 by the hook portion 26a, so that the loop top thread hooks the hook stitch 26b to catch the loop stitch caught by the ring top 3. Line 8LL, 9LL. When the loop stitches 8LL and 9LL are caught by the hook portion 26b, if the looper device TL can be activated first, the pulling of the loop stitches 8LL and 9LL can be smoothly performed. Further, when the hook portions 26a, 26b reach the receiving blade 12, the cooperation of the two will cut off the engaging portions of the respective lines 8LL, 9LL, 10aa. This cutting causes the ring top line 10z, which is finally left on the sewing machine side, to be held by the receiving blade 12 and the wire holding spring 21, as shown in Fig. 11, so that the wire (return wire) 10xx of the ring top line is fixed to the seam S The end.
當鉤26更加後退時動作片27的突片27a會卡合於托座16的卡合部16c，然後，動作片27和托座16會一起後退完成本裝置的動作。只要鉤26的第1次往復動不會讓殘留在布W側的環頂線10y從最終的左側環狀縫針線8L脫離，則布的縫製結束端就不會綻開。另，殘留在線縫S終端的環頂線的線屑10xx即使維持原狀也不會有問題，但造成妨礙時只要抽出線屑的端部去除即可。When the hook 26 is further retracted, the tab 27a of the action piece 27 is engaged with the engaging portion 16c of the bracket 16, and then the action piece 27 and the bracket 16 are retracted together to complete the operation of the apparatus. As long as the first reciprocating motion of the hook 26 does not cause the ring top thread 10y remaining on the cloth W side to be detached from the final left annular stitch line 8L, the sewing end end of the cloth does not swell. Further, the swarf 10xx of the ring top line remaining in the wire slot S terminal does not have a problem even if it is maintained as it is, but it is only necessary to remove the end portion of the wire swarf when it is hindered.
另，也可將配置在線供應源側的鬆線裝置TL在動作片27的第1次往復動時啟動使其動作在動作片27的第1次往復動後還是持續著，但於該狀況時會在縫針線鬆弛的狀態下使縫紉機成為1針量驅動。其結果，會導致環頂器3所要捕捉的環狀縫針線不會產生適度的繃緊。為了解決該問題，只要事先附設有可在動作片27的第1次往復動後的縫紉機驅動時消除縫針線鬆弛的線繃緊裝置即可。此外，本實施形態中雖然未加以詳述，但如第6圖所示，在第1次往復動時鉤26會從外方接觸環狀縫針線8L、9L。因此，若是能夠將鉤26的前後寬度儘可能形成較短以減少其對環狀縫針線的干涉，則就能夠使環狀縫針線的切斷可能性降低。In addition, the loosening device TL on the side of the supply source side may be activated to be operated after the first reciprocation of the operation piece 27 in the first reciprocation of the operation piece 27, but in this case, The sewing machine is driven by one stitch in a state where the sewing thread is slack. As a result, the annular stitch to be caught by the ring top 3 does not cause moderate tension. In order to solve this problem, it is only necessary to attach a wire tensioning device that can eliminate the slack of the needle thread when the sewing machine is driven after the first reciprocating motion of the operating piece 27. Further, although not described in detail in the present embodiment, as shown in Fig. 6, the hook 26 contacts the annular needle threads 8L and 9L from the outside during the first reciprocation. Therefore, if the front-back width of the hook 26 can be made as short as possible to reduce the interference with the loop stitch, the possibility of cutting the loop stitch can be reduced.
再加上，本實施形態中，為了變更鉤26的往復動路徑是對動作片的長孔加以變形，但並不限於此。例如第13圖所示，動作片50的第1、2長孔50a、50b也可形成為直線狀。此時，只要事先將各別插通在第1、2長孔50a、50b的圓狀支撐構件為筆型缸筒可朝長孔長向正交方向移動即可，但也可事先將圓狀的支撐構件為偏心圓狀以轉動式電磁線圈旋轉該支撐構件。此外，線切斷器51本身即使是固定在無桿缸筒的移動片還是能夠變更鉤26的往復動路徑。另外，本實施形態中雖未加以詳細說明，但也可事先用螺絲將卡止片25固定在機床內蓋17，構成為在該螺絲鬆弛時就能夠調整卡止片25的固定位置，如此一來就能夠變更承刀12的作用位置。Further, in the present embodiment, in order to change the reciprocating path of the hook 26, the long hole of the action piece is deformed, but the invention is not limited thereto. For example, as shown in Fig. 13, the first and second long holes 50a and 50b of the operation piece 50 may be formed in a straight line shape. In this case, the circular support member that is inserted into each of the first and second long holes 50a and 50b in advance may be a pen-shaped cylinder that can move in the orthogonal direction toward the long hole length, but may be rounded in advance. The support member is eccentrically rotated by the rotary electromagnetic coil to rotate the support member. Further, the wire cutter 51 itself can change the reciprocating path of the hook 26 even if it is a moving piece fixed to the rodless cylinder. Further, although not described in detail in the present embodiment, the locking piece 25 may be fixed to the machine tool inner cover 17 by screws in advance, and the fixing position of the locking piece 25 can be adjusted when the screw is loosened. The position of the blade 12 can be changed.
3．．．環頂器3. . . Ring topper
5、6．．．針5, 6. . . needle
8、9．．．縫針線8, 9. . . Needle thread
8L、9L．．．環狀縫針線8L, 9L. . . Loop stitch
8LL、9LL．．．新環狀縫針線8LL, 9LL. . . New loop stitching
10．．．環頂線10. . . Ring top line
11．．．線切斷器11. . . Wire cutter
12．．．承刀12. . . Undercut
26．．．鉤26. . . hook
27．．．動作片27. . . Action movie
26a、26b．．．鉤部26a, 26b. . . Hook
29．．．第1長孔29. . . First long hole
30．．．第2長孔30. . . 2nd long hole
30a．．．第1引導面30a. . . First guiding surface
30b．．．第2引導面30b. . . Second guiding surface
33．．．螺絲33. . . Screw
34．．．套環34. . . Collar
40．．．第2氣缸40. . . Second cylinder
第1圖為表示本發明相關的線縫綻開防止裝置的周邊構成概要透視圖。Fig. 1 is a schematic perspective view showing a peripheral structure of a seam preventing device according to the present invention.
第2圖為本發明相關的線縫綻開防止裝置全體說明平面圖。Fig. 2 is a plan view showing the entire seam preventing device according to the present invention.
第3圖為表示本發明相關的線縫綻開防止裝置的零件展開圖。Fig. 3 is a development view showing the components of the seam spur prevention device according to the present invention.
第4圖為縫紉機所使用的環頂線概略穿線圖。Figure 4 is a schematic thread drawing of the top line of the ring used in the sewing machine.
第5圖為表示本發明相關的線縫綻開防止裝置的動作步驟概略透視圖。Fig. 5 is a schematic perspective view showing an operation procedure of the seam slitting preventing device according to the present invention.
第6圖為表示本發明相關的線縫綻開防止裝置的動作步驟概略透視圖。Fig. 6 is a schematic perspective view showing an operation procedure of the seam slitting preventing device according to the present invention.
第7圖為表示本發明相關的線縫綻開防止裝置的動作步驟概略透視圖。Fig. 7 is a schematic perspective view showing an operation procedure of the seam warpage preventing device according to the present invention.
第8圖為表示本發明相關的線縫綻開防止裝置的動作步驟概略透視圖。Fig. 8 is a schematic perspective view showing an operation procedure of the seam slitting preventing device according to the present invention.
第9圖為表示本發明相關的線縫綻開防止裝置的動作步驟概略透視圖。Fig. 9 is a schematic perspective view showing an operation procedure of the seam slitting preventing device according to the present invention.
第10圖為表示本發明相關的線縫綻開防止裝置的動作步驟概略透視圖。Fig. 10 is a schematic perspective view showing an operation procedure of the seam slitting preventing device according to the present invention.
第11圖為表示本發明相關的線縫綻開防止裝置的動作步驟概略透視圖。Fig. 11 is a schematic perspective view showing an operation procedure of the seam slitting preventing device according to the present invention.
第12圖為表示鉤26的動作軌跡概略說明圖。Fig. 12 is a schematic explanatory view showing an operation trajectory of the hook 26.
第13圖為表示本發明相關的線縫綻開防止裝置的變形例概略說明圖。Fig. 13 is a schematic explanatory view showing a modification of the seam edging prevention device according to the present invention.
第14圖為表示搭載有本發明相關線縫綻開防止裝置的縫紉機外觀透視圖。Fig. 14 is a perspective view showing the appearance of a sewing machine on which the seam preventing preventing device according to the present invention is mounted.
4．．．挺針板4. . . Needle plate
11．．．線切斷器11. . . Wire cutter
12．．．承刀12. . . Undercut
16．．．托座16. . . Holder
16a．．．長孔16a. . . Long hole
16c．．．卡合部16c. . . Clamping department
17．．．機床內蓋17. . . Machine cover
19．．．螺絲19. . . Screw
23．．．線彈簧twenty three. . . Wire spring
24．．．螺絲twenty four. . . Screw
25．．．卡止片25. . . Card stop
26．．．鉤26. . . hook
27．．．動作片27. . . Action movie
27a．．．突片27a. . . Tab
28．．．螺絲28. . . Screw
29．．．第1長孔29. . . First long hole
30．．．第2長孔30. . . 2nd long hole
30a．．．第1引導面30a. . . First guiding surface
30b．．．第2引導面30b. . . Second guiding surface
31．．．螺絲31. . . Screw
33．．．螺絲33. . . Screw
35．．．螺絲35. . . Screw
36．．．連桿構件36. . . Link member
37．．．第1氣缸筒37. . . 1st cylinder
37a．．．活塞桿37a. . . Piston rod
38．．．線精工彈簧38. . . Line fine spring
39．．．螺絲39. . . Screw
40．．．第2氣缸筒40. . . 2nd cylinder
40a．．．活塞桿40a. . . Piston rod
41．．．長角材41. . . Long angle
42．．．線道導件42. . . Lane guide
44．．．U字型導線器44. . . U-shaped wire guide
Claims (3)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007237793A JP5073428B2 (en) | 2007-09-13 | 2007-09-13 | Method and apparatus for preventing fraying of seams |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW200940773A TW200940773A (en) | 2009-10-01 |
| TWI412642B true TWI412642B (en) | 2013-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| TW97132938A TWI412642B (en) | 2007-09-13 | 2008-08-28 | Method and device for preventing thread blooming |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5073428B2 (en) |
| CN (1) | CN101387052B (en) |
| TW (1) | TWI412642B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5468334B2 (en) * | 2009-08-31 | 2014-04-09 | ペガサスミシン製造株式会社 | Method and apparatus for preventing fraying of seams |
| CN102191632B (en) * | 2010-03-11 | 2014-09-10 | 大和缝纫机制造株式会社 | Split prevention method of stitches and split preventor of the same |
| TW201135002A (en) * | 2010-04-02 | 2011-10-16 | Chee Siang Ind Co Ltd | Needle thread-supplying device of sewing machine |
| CN104178996A (en) * | 2014-08-08 | 2014-12-03 | 常州市日发精密机械厂 | Resilience prevention yarn cutter |
| CN109306576B (en) * | 2018-12-04 | 2021-03-16 | 杰克缝纫机股份有限公司 | Thread trimming device on sewing machine and control method thereof |
| CN109267251B (en) * | 2018-12-04 | 2020-10-09 | 杰克缝纫机股份有限公司 | Control method of thread trimming device of sewing machine |
| CN112176533B (en) * | 2019-07-03 | 2022-05-13 | 大康织机股份有限公司 | Stitching and cutting device for tubular knitted articles |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1157268A (en) * | 1997-08-12 | 1999-03-02 | Pegasus Sewing Mach Mfg Co Ltd | Seam running preventing method and device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2121469U (en) * | 1992-04-30 | 1992-11-11 | 赵云泽 | Side open needle |
| JP3790882B2 (en) * | 1999-08-20 | 2006-06-28 | ヤマトミシン製造株式会社 | Fray prevention device for seams |
| JP4030864B2 (en) * | 2002-12-10 | 2008-01-09 | Ｊｕｋｉ株式会社 | Upper thread holding device for sewing machine |
| JP4501136B2 (en) * | 2005-04-14 | 2010-07-14 | ヤマトミシン製造株式会社 | Fray prevention device for seams |
-
2007
- 2007-09-13 JP JP2007237793A patent/JP5073428B2/en active Active
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2008
- 2008-08-13 CN CN200810210640XA patent/CN101387052B/en active Active
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1157268A (en) * | 1997-08-12 | 1999-03-02 | Pegasus Sewing Mach Mfg Co Ltd | Seam running preventing method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101387052A (en) | 2009-03-18 |
| TW200940773A (en) | 2009-10-01 |
| JP5073428B2 (en) | 2012-11-14 |
| CN101387052B (en) | 2012-10-03 |
| JP2009066191A (en) | 2009-04-02 |
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