JP2005073866A - Sewing machine and threading control program - Google Patents
Sewing machine and threading control program Download PDFInfo
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- JP2005073866A JP2005073866A JP2003306783A JP2003306783A JP2005073866A JP 2005073866 A JP2005073866 A JP 2005073866A JP 2003306783 A JP2003306783 A JP 2003306783A JP 2003306783 A JP2003306783 A JP 2003306783A JP 2005073866 A JP2005073866 A JP 2005073866A
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- 238000009958 sewing Methods 0.000 title claims abstract description 81
- 230000007246 mechanism Effects 0.000 abstract description 46
- 238000010586 diagram Methods 0.000 description 7
- 239000004744 fabric Substances 0.000 description 6
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Abstract
Description
本発明はミシン及びミシン糸通し制御プログラムに関し、特に、糸引き部材により糸ループを解消することが可能なミシン及び糸通し制御プログラムであって、糸端保持手段による保持が解除された際に、糸が縫針の目孔から抜けることを防ぐことが可能なミシン及び糸通し制御プログラムに関するものである。 The present invention relates to a sewing machine and a sewing threading control program, and in particular, a sewing machine and a threading control program capable of eliminating a thread loop by a thread pulling member, when the holding by the thread end holding means is released, The present invention relates to a sewing machine and a threading control program capable of preventing a thread from coming off from the eye of a sewing needle.
従来、縫針の目孔に自動的に糸を通すことが可能な糸通し手段を備えたミシンが提案されてきた。例えば、特許文献１に記載の糸通し機構によると、糸案内溝などにより案内されて糸端が糸保持部に保持された糸が、その途中部を糸把持部に把持されると共に糸係止部に係止されつつ、縫針の目孔の近傍に移動される。次に、フックが係止部とは反対側から縫針の目孔の近傍まで移動されて目孔に通され、このフックに糸が糸係止部によって掛けられた後、フックが目孔から抜かれて糸が糸通しされる。
しかし、特許文献１の糸通し機構では、フックにより目孔に通された糸は、フックと目孔との間でループ状になるが、従来、この糸ループは作業者が糸端側の糸ループの糸を引くことで解消しなければならなかった。このループ解消作業は、縫針の近傍の狭い場所に指を入れて、糸の糸端側を探して行わなければならず、作業者にとっては非常に困難な作業であった。また、この糸通し機構においては、糸把持部により糸の緊張が維持されるので、フックにより目孔に通された糸とフックとの係合が解除されると、糸取りバネなどにより糸が引かれて、糸が目孔から抜ける、糸抜けといった問題も生じている。 However, in the threading mechanism of Patent Document 1, the thread passed through the eye hole by the hook is looped between the hook and the eye hole. Conventionally, this thread loop is a thread on the thread end side by the operator. It had to be solved by pulling the thread of the loop. This loop elimination operation must be performed by putting a finger in a narrow place near the sewing needle and searching for the yarn end side of the yarn, which is very difficult for the operator. Further, in this threading mechanism, the tension of the thread is maintained by the thread gripping portion. Therefore, when the engagement between the thread passed through the eye hole by the hook and the hook is released, the thread is pulled by a thread take-up spring or the like. As a result, there is a problem that the thread is pulled out of the eye hole and the thread is missing.
そこで、特許文献２のように糸ループを解消可能な位置まで糸引きする糸通し機構が提案されている。この糸通し機構によれば、３つの糸挟み器を有し、糸切れした糸を第１の糸挟み器が挟み、この糸挟み器から第２の糸挟み器に渡され、この第２の糸挟み器が縫針の目孔の近傍まで糸を移動させて目孔に糸を通し、この通された糸を第３の糸挟み器が保持した状態で糸ループが解消されるまで糸引きし糸通しされる。しかし、この糸通し機構においても、３つの糸挟み器とこれらを夫々別々に駆動させるための駆動機構などが必要なためミシンが非常に複雑になり、到底実用に耐えうるものではない。 In view of this, a threading mechanism has been proposed in which the thread is pulled to a position where the thread loop can be eliminated as in Patent Document 2. According to this threading mechanism, it has three thread pincers, the first thread pinch pinches the thread that has been broken, and is passed from this thread pincher to the second thread pinch, The thread clamp moves the thread to the vicinity of the needle hole of the sewing needle, passes the thread through the hole, and pulls the thread through the thread until the thread loop is released while the third thread clamp holds the thread. Threaded. However, this threading mechanism also requires three thread pincers and drive mechanisms for driving them separately, so that the sewing machine becomes very complicated and cannot be practically used.
本発明の目的は、糸端保持手段による保持が解除された際に、糸が縫針の目孔から抜けることを防ぎ、糸ループを解消して確実に糸通しができるミシン及び糸通し制御プログラムを提供しようとするものである。 An object of the present invention is to provide a sewing machine and a threading control program capable of preventing the thread from coming out of the stitch hole of the sewing needle when the holding by the thread end holding means is released, and eliminating the thread loop and surely threading. It is something to be offered.
請求項１のミシンは、縫針の目孔に糸通しフックにより糸通しする糸通し手段と、前記縫針の目孔を通って下方へ延びる糸を糸払いする糸引き部材を含む糸引き手段と、糸通しフックに糸掛けされた糸の糸端を保持する糸端保持手段と、糸引き手段を制御する制御手段とを備えたミシンにおいて、前記糸引き部材の先端部には、糸引き部材の進出方向と後退方向に糸を移動可能な糸掛部が形成され、前記制御手段は、糸通しフックにより縫針の目孔に糸通しされたループ状の糸を前記糸掛部に係合可能な係合位置まで前記糸引き部材を進出駆動させた後、前記糸引き部材を後退駆動させて前記糸端保持手段による糸の保持を解消させるまでの間に、少なくとも一度前記糸引き部材を進出駆動させて前記糸掛部により糸を前記進出方向に移動させて糸を繰り出すものである。 The sewing machine according to claim 1, wherein the threading means includes a threading means for threading through the threaded hole of the sewing needle by a threading hook, and a threading means including a threading member for threading a thread extending downward through the threaded hole of the sewing needle; In a sewing machine comprising a thread end holding means for holding a thread end of a thread threaded on a threading hook, and a control means for controlling the thread pulling means, a tip of the thread pulling member A thread hook that can move the thread in the advancing direction and the backward direction is formed, and the control means is capable of engaging a loop-shaped thread threaded through the thread of the sewing needle by a threading hook with the thread hook. After the yarn pulling member is driven to advance to the engagement position, the yarn pulling member is driven to advance at least once before the yarn pulling member is driven backward to release the holding of the yarn by the yarn end holding means. The yarn hooking portion moves the yarn in the advance direction. It is intended to feed the yarn Te.
このミシンにおいて糸通しする場合は、縫針の目孔に通されて糸が掛けられた状態で糸通し手段の糸通しフックが目穴から抜かれる。次に、目孔から抜かれた糸通しフックと目孔との間に形成されたループ状の糸に係合する係合位置まで、制御手段によって糸引き手段の糸引き部材が進出方向へ駆動され、糸引き部材の糸掛部に糸が係合される。次に、糸掛部に係合された糸と共に糸引き部材が後退移動されて糸端保持手段による糸端保持が解消されるまでに、少なくとも一度糸引き部材が進出駆動されて、糸掛部に係合された糸が前方へ移動され、糸が繰り出される。その後、糸掛部に係合された糸と共に糸引き部材が後退移動されると、糸が繰り出されたため糸が弛み、糸が糸通しフックから離脱され、更に、糸引き部材が糸と共に後退駆動されると、糸ループが解消され、糸が完全に糸通しされる。 When threading with this sewing machine, the threading hook of the threading means is pulled out from the threaded hole in a state where the thread is threaded through the threaded hole of the sewing needle. Next, the thread pulling member of the thread pulling means is driven in the advancing direction by the control means to the engagement position where it engages with the loop-shaped thread formed between the threading hook pulled out from the eye hole and the eye hole. The yarn is engaged with the yarn hooking portion of the yarn pulling member. Next, the yarn pulling member is advanced at least once until the yarn pulling member is moved backward together with the thread engaged with the yarn hooking portion, and the yarn end holding by the yarn end holding means is released. The yarn engaged with is moved forward and the yarn is fed out. After that, when the yarn pulling member is moved backward together with the thread engaged with the yarn hooking portion, the yarn is drawn out so that the yarn is loosened and detached from the threading hook, and further, the yarn pulling member is driven backward with the yarn. As a result, the thread loop is canceled and the thread is completely threaded.
請求項２のミシンは、前記糸掛部は、前記糸引き部材を進出方向に駆動する時に糸と係合する後糸掛部と、前記糸引き部材を後退方向に駆動する時に糸と係合する前糸掛部とを備えるものである。このミシンによれば、糸引き部材が進出方向に駆動されると、糸が後糸掛部に係合されつつ進出方向へ移動されて糸が繰り出され、一方、糸引き部材が後退方向へ駆動されると、糸が前糸掛部に係合されて移動される。 The sewing machine according to claim 2, wherein the yarn hooking portion is engaged with a yarn when the yarn pulling member is driven in the advancing direction and is engaged with the yarn when the yarn pulling member is driven in the backward direction. And a front yarn hooking portion. According to this sewing machine, when the yarn pulling member is driven in the advance direction, the yarn is moved in the advance direction while being engaged with the rear yarn hooking portion, and the yarn is fed out, while the yarn pulling member is driven in the backward direction. Then, the yarn is moved while being engaged with the front yarn hooking portion.
請求項３のミシンは、前記糸掛部は、前記糸引き部材の進出方向への駆動時に糸を前記後糸掛部へ案内する糸案内溝を備えたものである。糸引き部材が係合位置まで進出方向へ駆動されると、糸案内溝によって糸が後糸掛部まで案内されて係合される。 According to a third aspect of the present invention, the yarn hooking portion includes a yarn guide groove that guides the yarn to the rear yarn hooking portion when the yarn pulling member is driven in the advancing direction. When the yarn pulling member is driven in the advance direction to the engagement position, the yarn is guided to the rear yarn hooking portion by the yarn guide groove and engaged.
請求項４の糸通し制御プログラムは、縫針の目孔に糸通しフックにより糸通しする糸通し手段と、前記糸通しフックにより縫針の目孔に糸通しされたループ状の糸を糸引きすると共に糸引き部材の先端部に設けられた糸掛部により糸の繰り出しが可能な糸引き手段と、前記糸通しフックに糸掛けされた糸の糸端を保持する糸端保持手段と、前記糸引き手段と前記糸通し手段とを制御する制御手段と、前記糸通しフックを縫針の目孔に通す指令を入力する第１操作部と、糸通しするために前記糸通しフックを後退駆動させる指令を入力する第２操作部とを備えたミシンにおいて、前記縫針の目孔に糸通しする為に制御手段のコンピュータに実行させる糸通し制御プログラムであって、前記第１操作部からの指令に応答して縫針の目孔に糸通しフックを通す第１ルーチンと、前記第２操作部からの指令に応答して糸通しするために糸が掛けられた糸通しフックを目孔から抜き、所定距離移動させたループ解消位置に停止させる第２ルーチンと、前記糸引き部材を進出駆動させて、糸通しフックにより縫針の目孔から延びたループ状の糸に、糸引き手段の糸掛部を係合させる第３ルーチンと、前記糸引き部材を後退駆動させて前記糸端保持手段による糸端保持を解消させるまでの間に、少なくとも一度糸引き部材を進出駆動させて糸を繰り出してから糸端保持を解消させる第４ルーチンとを備えたものである。 According to a fourth aspect of the present invention, there is provided a threading control program for threading threading means threaded into a threaded hole of a sewing needle with a threading hook, and threading a loop-shaped thread threaded into the threaded hole of the sewing needle with the threading hook. A thread pulling means capable of feeding a thread by a thread hook provided at the tip of the thread pulling member; a thread end holding means for holding a thread end of the thread threaded on the threading hook; and the thread pulling A control means for controlling the means and the threading means, a first operating portion for inputting a command for passing the threading hook through the eye of the sewing needle, and a command for driving the threading hook backward for threading. In a sewing machine having a second operation unit for inputting, a threading control program to be executed by a computer of the control means for threading the eye of the sewing needle, and responding to a command from the first operation unit Thread the needle thread The first routine for passing the thread and the threading hook on which the thread is hung for threading in response to a command from the second operation section are removed from the eye hole and stopped at the loop release position moved by a predetermined distance. A second routine, a third routine in which the thread pulling member is driven to advance, and a thread hooking portion of a thread pulling means is engaged with a loop-shaped thread extending from the thread hole of the sewing needle by a threading hook; A fourth routine for releasing the yarn end holding after the yarn pulling member is advanced and driven at least once until the yarn end holding by the yarn end holding means is canceled after the pulling member is driven backward. It is provided.
この糸通し制御プログラムにおいて糸通しする場合には、まず、第１ルーチンでは、第１操作部が操作されると、制御手段により縫針の目孔に糸通し手段の糸通しフックが通される。次に、第２ルーチンでは、第２操作部が操作されると、糸が掛けられた糸通し手段の糸通しフックが目穴から抜かれ、ループ解消位置まで所定距離移動される。次に、第３ルーチンでは、目孔から抜かれた糸通しフックと目孔との間に形成されたループ状の糸に係合するまで、糸引き手段の糸引き部材が進出方向へ駆動され、糸引き部材の糸掛部に糸が係合される。 When threading in this threading control program, first, in the first routine, when the first operating portion is operated, the threading hook of the threading means is passed through the eye of the sewing needle by the control means. Next, in the second routine, when the second operation section is operated, the threading hook of the threading means on which the thread is hung is removed from the eye hole and moved to a loop releasing position by a predetermined distance. Next, in the third routine, the thread pulling member of the thread pulling means is driven in the advancing direction until it engages with a loop-shaped thread formed between the threading hook pulled out from the eye hole and the eye hole, The yarn is engaged with the yarn hooking portion of the yarn drawing member.
次に、第４ルーチンでは、糸掛部に係合された糸と共に糸引き部材が後退方向へ移動されて糸端保持手段による糸端保持が解消されるまでに、少なくとも一度糸引き部材が進出駆動されて、糸が前方へ移動され、糸が繰り出される。その後、糸掛部に係合された糸と共に糸引き部材が後退移動されて糸端保持手段による糸端保持が解消された後、糸ループが解消され、糸が完全に糸通しされる。 Next, in the fourth routine, the yarn pulling member advances at least once until the yarn pulling member is moved in the backward direction together with the yarn engaged with the yarn hooking portion and the yarn end holding by the yarn end holding means is canceled. When driven, the yarn is moved forward and the yarn is fed out. After that, the yarn pulling member is moved backward together with the yarn engaged with the yarn hooking portion to cancel the yarn end holding by the yarn end holding means, and then the yarn loop is released and the yarn is completely threaded.
請求項１の発明によれば、従来から糸払いするために設けられている糸引き機構により、目孔と糸通しフックとの間に形成された糸ループを解消し、目孔に糸を完全に糸通しすることができる。即ち、ミシンの構成を複雑にすることなく、糸ループを解消して、完全に糸通しすることができる。糸と共に糸引き部材を進出方向へ駆動させて糸を繰り出してから、糸端保持手段により緊張されている糸の糸端保持を解除するので、緊張が解除された糸が糸取りバネなどにより引かれて目孔から抜けることがなく、確実に糸通しすることができる。また、糸を繰り出して糸を弛ませることで、糸通しフックからの糸の離脱を確実なものとすることができる。 According to the first aspect of the present invention, the thread pulling mechanism that has been conventionally provided for thread wiping eliminates the thread loop formed between the eye hole and the threading hook, and the thread is completely put into the eye hole. Can be threaded. That is, the thread loop can be eliminated and the thread can be completely threaded without complicating the structure of the sewing machine. Since the yarn pulling member is driven in the advance direction together with the yarn to feed out the yarn, and the yarn end holding of the yarn that is tensioned by the yarn end holding means is released, the tension released is pulled by the yarn take-up spring or the like. Therefore, the thread can be reliably threaded without coming out of the eye hole. In addition, the yarn can be surely detached from the threading hook by unwinding the yarn and loosening the yarn.
請求項２の発明によれば、糸引き部材の進出駆動及び後退駆動時に、糸と係合して糸を移動させることができ、進出駆動時の糸の繰り出し及び糸通しを確実なものとすると共に、後退駆動時の糸引き手段（糸引き部材）による糸の引き込み及び糸ループ解消を確実なものとすることができる。
請求項３の発明によれば、糸引き部材を係合位置へ進出駆動させた際に、糸案内溝により糸を確実に後糸掛部に移動させることができる。
According to the second aspect of the present invention, the yarn can be engaged with the yarn and moved when the yarn pulling member is advanced and retracted, and the yarn feeding and threading during the advancement is ensured. At the same time, it is possible to ensure the pulling of the yarn and the cancellation of the yarn loop by the yarn pulling means (yarn pulling member) during the backward drive.
According to the invention of claim 3, when the yarn pulling member is driven to advance to the engagement position, the yarn can be reliably moved to the rear yarn hooking portion by the yarn guide groove.
請求項４の発明によれば、請求項１と同様の効果を奏することができる。 According to the invention of claim 4, the same effect as that of claim 1 can be obtained.
糸抜けすることなく、糸ループを解消して、確実に目孔に糸を糸通しすることが可能なミシンを提供するという本発明の目的を、糸掛部に糸が係合された糸引き部材を進出方向へ駆動させて糸を繰り出してから、糸端保持手段による糸端保持を解除し、糸ループを解消することで実現した。 It is an object of the present invention to provide a sewing machine that can eliminate a thread loop and reliably thread a thread through an eye hole without losing the thread. This was realized by driving the member in the advance direction to feed the yarn and then releasing the yarn end holding by the yarn end holding means to eliminate the yarn loop.
本発明の実施例について説明する。本実施例は、６本の縫針を有する多針式ミシンに本発明を適用した一例である。尚、図１に矢印で示す作業者が位置する方向を前方とし、作業者から見て左右方向を左右方向とする。 Examples of the present invention will be described. The present embodiment is an example in which the present invention is applied to a multi-needle type sewing machine having six sewing needles. In addition, let the direction where the operator shown by the arrow in FIG.
図１,図２に示すように、多針式ミシンＭを支持する左右１対の支持部１と、支持部１の後瑞部に立設する脚柱部２と、脚柱部２の上端部から前方へ延びるアーム部３と、アーム部３の先端部に左右方向に移動可能に設けられ６本の縫針１０を有する針棒ケース４と、アーム部３の途中部に設けられた操作パネル５と、脚柱部２から前方へ延びるシリンダベッド部６と、刺繍枠保持機構７などを備えている。
図３,図４に示すように、アーム部３には、縫針１０の目孔１１に上糸Ｔを通すための糸通し機構１２と、上糸Ｔを糸引きするための糸引き機構１３などが設けられている。
As shown in FIGS. 1 and 2, a pair of left and right support portions 1 that support the multi-needle sewing machine M, a pedestal portion 2 that stands on the rear portion of the support portion 1, and an upper end of the pedestal portion 2 An arm part 3 extending forward from the arm part, a needle bar case 4 having six sewing needles 10 movably provided at the distal end of the arm part 3, and an operation panel provided in the middle of the arm part 3 5, a cylinder bed portion 6 that extends forward from the pedestal column portion 2, an embroidery frame holding mechanism 7, and the like.
As shown in FIGS. 3 and 4, the arm portion 3 includes a threading mechanism 12 for passing the upper thread T through the eye hole 11 of the sewing needle 10, a thread pulling mechanism 13 for pulling the upper thread T, and the like. Is provided.
糸通し機構１２は、糸通しフック２０を縫針１０の目孔１１に進退させて、糸通しフック２０に掛けられた上糸Ｔを目孔１１に糸通しするためのものである。図３,図５に示すように、糸通し機構１２は、パルスモータからなる糸通しモータ１５と、ガイドラック１６と、ガイドフレーム１７と、第１,第２リンク部材１８,１９と、左右１対のフックガード２０ａによりガードされた糸通しフック２０などを備えている。 The threading mechanism 12 is for moving the threading hook 20 forward and backward in the eye hole 11 of the sewing needle 10 and threading the upper thread T hung on the threading hook 20 through the eye hole 11. As shown in FIGS. 3 and 5, the threading mechanism 12 includes a threading motor 15 composed of a pulse motor, a guide rack 16, a guide frame 17, first and second link members 18 and 19, and left and right 1. A threading hook 20 guarded by a pair of hook guards 20a is provided.
ガイドラック１６の前端部には、糸通しモータ１５の出力軸１５ａに係合されるラック部２１が形成されている。ガイドラック１６の左右方向中央部には、略全長に亙って被ガイド溝２３が形成され、この被ガイド溝２３には、ガイドラック１６を上下方向にガイドするためにフレーム２２に固定された上下１対のガイドピン２４が摺動可能に挿通されている。ガイドラック１６の下端部には、上端がフレーム２２に固定されたガタツキ防止用のバネ２９が連結されている。 A rack portion 21 that is engaged with the output shaft 15 a of the threading motor 15 is formed at the front end portion of the guide rack 16. A guide groove 23 is formed over the entire length of the guide rack 16 in the left-right direction. The guide groove 16 is fixed to the frame 22 to guide the guide rack 16 in the vertical direction. A pair of upper and lower guide pins 24 are slidably inserted. A rattle-preventing spring 29 whose upper end is fixed to the frame 22 is connected to the lower end of the guide rack 16.
第１リンク部材１８の後瑞部は、ガイドラック１６の下端部に回動可能に連結され、第１リンク部材１８の前端部は、第１リンク部材１８をガイドするためにガイドフレーム１７のガイド溝２６に挿通された第１被ガイドピン２５を介して第２リンク部材１９の後端部に回動可能に連結されている。第２リンク部材１９には、第２リンク部材１９をガイドするためにガイドフレーム１７のガイド溝２６に挿通された第１，第２被ガイドピン２５，２８が装着されている。第２リンク部材１９の先端部には、フックガード２０ａと共に糸通しフック２０が固定されている。 The rear link portion of the first link member 18 is rotatably connected to the lower end portion of the guide rack 16, and the front end portion of the first link member 18 is a guide for the guide frame 17 to guide the first link member 18. It is rotatably connected to the rear end portion of the second link member 19 via a first guided pin 25 inserted through the groove 26. The second link member 19 is provided with first and second guided pins 25 and 28 that are inserted through the guide grooves 26 of the guide frame 17 in order to guide the second link member 19. A threading hook 20 is fixed to the tip of the second link member 19 together with a hook guard 20a.
図４〜図６に示すように、糸引き機構１３は、パルスモータからなる駆動モータ３１と、セクターギヤ３２と、糸引き部材３３と、リンク部材３４と、ガイド部材３５などを有する。
セクターギヤ３２は、側面視にて略半円状に形成され、その外周の一部に歯が形成されている。リンク部材３４は、板状に形成されている。リンク部材３４の後瑞部は、セクターギヤ３２に回動可能に枢支され、リンク部材３４の前端部は、糸引き部材３３に回動可能に枢支されている。
As shown in FIGS. 4 to 6, the yarn drawing mechanism 13 includes a drive motor 31 formed of a pulse motor, a sector gear 32, a yarn drawing member 33, a link member 34, a guide member 35, and the like.
The sector gear 32 is formed in a substantially semicircular shape in a side view, and teeth are formed on a part of the outer periphery thereof. The link member 34 is formed in a plate shape. The rear rear portion of the link member 34 is pivotally supported by the sector gear 32, and the front end portion of the link member 34 is pivotally supported by the thread drawing member 33.
図５，図６に示すように、糸引き部材３３の先端部には、糸引き部材３３の進出方向と後退方向に上糸Ｔを移動可能な糸掛部３６が形成されている。ここで進出方向とは、図３、図４に示す前方且つ下方方向であり、後退方向は後方且つ上方方向である。この糸掛部３６には、ガイド部３６ａと、前糸掛部３６ｂと、後糸掛部３６ｃと、ガイド部３６ａから後糸掛部３６ｃに繋がる糸案内溝３６ｄが形成されている。ガイド部３６ａは、糸引きする場合に上糸Ｔを糸掛部３６の内部にガイドし、糸案内溝３６ｄは、上糸Ｔを後糸掛部３６ｃにガイドするためのものである。前糸掛部３６ｂには、糸引き部材３３が後退駆動される場合に上糸Ｔが係合されて、上糸Ｔが糸引き部材３３と共に移動される。後糸掛部３６ｃには、糸引き部材３３が進出駆動される場合に上糸Ｔが係合されて、上糸Ｔが糸引き部材３３と共に移動され、糸駒(図示略)から上糸Ｔが繰り出される。糸引き部材３３の後端部には、鉛直方向に立設された連結部３３ａが形成され、この連結部３３ａにリンク部材３４の前端部が連結される。 As shown in FIGS. 5 and 6, a yarn hooking portion 36 capable of moving the upper yarn T in the advance direction and the backward direction of the yarn pulling member 33 is formed at the tip of the yarn pulling member 33. Here, the advancing direction is the forward and downward direction shown in FIGS. 3 and 4, and the backward direction is the backward and upward direction. The yarn hooking portion 36 is formed with a guide portion 36a, a front yarn hooking portion 36b, a rear yarn hooking portion 36c, and a yarn guide groove 36d connecting the guide portion 36a to the rear yarn hooking portion 36c. The guide portion 36a guides the upper thread T into the yarn hooking portion 36 when the yarn is pulled, and the yarn guide groove 36d is for guiding the upper yarn T to the rear yarn hooking portion 36c. When the yarn pulling member 33 is driven backward, the upper yarn T is engaged with the front yarn hooking portion 36 b, and the upper yarn T is moved together with the yarn pulling member 33. When the yarn pulling member 33 is driven to advance, the upper yarn T is engaged with the rear yarn hooking portion 36c, and the upper yarn T is moved together with the yarn pulling member 33, and the upper yarn T is moved from the yarn piece (not shown). Is paid out. A connecting portion 33a erected in the vertical direction is formed at the rear end portion of the thread drawing member 33, and the front end portion of the link member 34 is connected to the connecting portion 33a.
図３に示すように、ガイド部材３５は、前端部が下方に向くようにアーム部３の先端部に蓋部材３５ｂを介して固定されている。図６に示すように、ガイド部材３５には、糸引き部材３３を収容し、ガイドするための凹部３５ａが形成され、この凹部３５ａに糸引き部材３３が配設された状態で上から蓋部材３５ｂが被せられている。 As shown in FIG. 3, the guide member 35 is fixed to the distal end portion of the arm portion 3 via a lid member 35b so that the front end portion faces downward. As shown in FIG. 6, the guide member 35 is formed with a recess 35a for accommodating and guiding the thread drawing member 33, and the lid member from above with the thread pulling member 33 disposed in the recess 35a. 35b is covered.
次に、糸通し機構１２及び糸引き機構１３による糸通しについて説明する。
上糸Ｔを糸通しする場合には、図７−１に示す待機位置に糸通しフック２０及び糸引き部材３３が位置する状態から、糸通しモータ１５が図３の矢印Ａの方向に回転駆動され、ガイドラック１６がガイドピン２４によってガイドされつつ下方へ移動される。ガイドラック１６が下方へ移動されると、ガイドラック１６の下端部に装着された第１リンク部材１８が第１被ガイドピン２５と共にガイド溝２６にガイドされつつ移動され、更に、第１リンク部材１８の前端部に連結された第２リンク部材１９も第１，第２被ガイドピン２５，２８と共にガイド溝２６にガイドされつつ移動され、図３、図１０に示すように、糸通しフック２０が糸掛位置まで移動されて目孔１１に挿通される。
Next, threading by the threading mechanism 12 and the thread drawing mechanism 13 will be described.
When threading the upper thread T, the threading motor 15 is driven to rotate in the direction of arrow A in FIG. 3 from the state where the threading hook 20 and the thread pulling member 33 are positioned at the standby position shown in FIG. Then, the guide rack 16 is moved downward while being guided by the guide pins 24. When the guide rack 16 is moved downward, the first link member 18 attached to the lower end portion of the guide rack 16 is moved while being guided by the guide groove 26 together with the first guided pin 25, and further, the first link member is moved. The second link member 19 connected to the front end portion of the 18 is also moved while being guided by the guide groove 26 together with the first and second guided pins 25 and 28, and as shown in FIGS. Is moved to the yarn hooking position and inserted into the eye hole 11.
次に、詳しくは後述するが、図９,図１０に示すように、糸通しフック２０に上糸Ｔが掛けられた状態で、上記と逆方向に糸通しモータ１５が駆動されて、糸通しフック２０が目孔１１から抜かれて、上糸Ｔが目孔１１に糸通しされ、図７−２,図８に示すように、ループ解消位置で糸通しフック２０が停止される。 Next, as will be described in detail later, as shown in FIGS. 9 and 10, the threading motor 15 is driven in the direction opposite to the above in the state where the upper thread T is hung on the threading hook 20, and the threading hook 20 is threaded. The hook 20 is pulled out from the eye hole 11, the upper thread T is threaded through the eye hole 11, and as shown in FIGS. 7-2 and 8, the threading hook 20 is stopped at the loop release position.
次に、図８に示すように、目孔１１と糸通しフック２０との間にループ状の糸ループＬが形成されている状態で、駆動モータ３１が図４の矢印Ｂの方向へ回転駆動されて、セクターギヤ３２が回動され、この駆動力がリンク部材３４を介して糸引き部材３３に伝達され、図７−２に示す待機位置に位置する糸引き部材３３が、図７−３に示す係合位置までガイド部材３５によってガイドされつつ下方且つ前方へ進出駆動される。この係合位置では、糸引き部材３３の先端部に形成された糸掛部３６は、糸通しフック２０と目孔１１との間に形成された糸ループＬ(図８参照)の間に挿入されると共に、糸ループＬの糸端側の糸が糸引き部材３３のガイド部３６ａ及び糸案内溝３６ｄに案内され後糸掛部３６ｃに係合される。 Next, as shown in FIG. 8, the drive motor 31 is driven to rotate in the direction of arrow B in FIG. 4 with a loop-shaped thread loop L formed between the eye hole 11 and the threading hook 20. Then, the sector gear 32 is rotated, and this driving force is transmitted to the thread pulling member 33 via the link member 34, and the thread pulling member 33 located at the standby position shown in FIG. Are driven forward and downward while being guided by the guide member 35 to the engagement position shown in FIG. In this engagement position, the thread hook 36 formed at the tip of the thread pulling member 33 is inserted between the thread loop L (see FIG. 8) formed between the threading hook 20 and the eye hole 11. At the same time, the yarn on the yarn end side of the yarn loop L is guided by the guide portion 36a and the yarn guide groove 36d of the yarn pulling member 33 and engaged with the rear yarn hooking portion 36c.
次に、図７−４に示すように、矢印Ｂと逆方向に駆動モータ３１が回動されて糸引き部材３３が所定距離だけ後退駆動される。尚、ここでいう所定距離とは、後述する糸端保持機構４０による上糸Ｔの糸端保持が解消されない程度の、糸引き部材３３の移動距離のことである。次に、図７−５に示すように、糸引き部材３３が進出駆動される。この糸引き部材３３の移動に伴って、上糸Ｔも後糸掛部３６ｃに係合されて進出方向へ移動され、糸駒から上糸Ｔが繰り出される。次に、糸引き部材３３が後退駆動されると、上糸Ｔが繰り出されたので上糸Ｔが若干弛み、その結果、糸通しフック２０から上糸Ｔが離脱される。更に、糸引き部材３３が、後退駆動され、上糸Ｔが前糸掛部３６ｂに係合されて、糸引き部材３３の後退駆動により引き込まれることにより、上糸Ｔの糸端保持が解消されて糸ループＬが解消された後、上糸Ｔは糸引き部材３３の軌道状に設けられたマジックテープ(登録商標)などからなる糸保持テープ３７に受け渡されて保持される。最後に、糸通しモータ１５が矢印Ａと逆方向へ回転駆動されて、糸通しフック２０が待機位置へと移動される。 Next, as shown in FIG. 7-4, the drive motor 31 is rotated in the direction opposite to the arrow B, and the thread drawing member 33 is driven backward by a predetermined distance. Here, the predetermined distance is a moving distance of the yarn pulling member 33 such that the yarn end holding of the upper yarn T by the yarn end holding mechanism 40 described later is not canceled. Next, as shown in FIG. 7-5, the yarn drawing member 33 is driven to advance. As the yarn pulling member 33 moves, the upper yarn T is also engaged with the rear yarn hooking portion 36c and moved in the advance direction, and the upper yarn T is fed out from the yarn spool. Next, when the thread pulling member 33 is driven backward, the upper thread T is unwound and the upper thread T is slightly loosened. As a result, the upper thread T is released from the threading hook 20. Further, the yarn pulling member 33 is driven backward, the upper yarn T is engaged with the front yarn hooking portion 36b, and the yarn pulling member 33 is pulled backward, whereby the yarn end holding of the upper yarn T is eliminated. After the yarn loop L is eliminated, the upper yarn T is delivered and held by a yarn holding tape 37 made of Velcro (registered trademark) or the like provided on the track shape of the yarn pulling member 33. Finally, the threading motor 15 is rotationally driven in the direction opposite to the arrow A, and the threading hook 20 is moved to the standby position.
糸引き機構１３は、糸替えの場合に上糸Ｔを糸払いするためのものでもある。糸払いの場合には、上糸Ｔが目孔１１から下方へ垂れて延びているので、糸掛部３６が縫針１０の鉛直下方に達するまで、糸払い部材３３が糸通しの場合と同様の軌道で進出方向へ移動され、糸掛部３６に上糸Ｔが係合された後、糸引き部材３３が待機位置まで後退方向へ移動されて、上糸Ｔが糸保持テープ３７に保持される。
尚、駆動モータ３１は、ミシンモータ７７(図１２参照)から針棒３８への駆動力の伝達を切断する針棒釈放機構３９をも駆動させるが本願とは直接関係ないので説明を省略する。
The yarn pulling mechanism 13 is also used to wipe the upper yarn T when changing the yarn. In the case of thread wiping, since the upper thread T extends downwardly from the eye hole 11, the thread wiping member 33 is the same as in the case of threading until the thread hooking portion 36 reaches vertically below the sewing needle 10. After being moved in the advancing direction on the track and the upper thread T is engaged with the yarn hooking portion 36, the yarn pulling member 33 is moved in the backward direction to the standby position, and the upper thread T is held by the yarn holding tape 37. .
The drive motor 31 also drives a needle bar release mechanism 39 that cuts off transmission of the driving force from the sewing machine motor 77 (see FIG. 12) to the needle bar 38, but the description thereof is omitted because it is not directly related to the present application.
図４,図９及び図１０に示すように、針棒ケース４には、縫針１０が下端部に装着された針棒３８と、加工布を押えるための布押え部材４１と、糸端保持機構４０と、糸通し用糸保持機構４２(以下、糸保持機構４２)と、糸取りバネ４５等が設けられている。尚、針棒３８,糸端保持機構４０,布押え部材４１,糸保持機構４２は、夫々６個若しくは６本設けられている。 As shown in FIGS. 4, 9, and 10, the needle bar case 4 includes a needle bar 38 with a sewing needle 10 attached to the lower end, a cloth presser member 41 for pressing the work cloth, and a thread end holding mechanism. 40, a thread holding thread holding mechanism 42 (hereinafter referred to as a thread holding mechanism 42), a thread take-up spring 45, and the like. Incidentally, six or six needle bars 38, a thread end holding mechanism 40, a cloth presser member 41, and a thread holding mechanism 42 are provided.
６本の針棒３８は、針棒ケース４と共に左右方向に移動されて、所望の針棒３８が選択され、その針棒３８がミシンモータ７７から伝達された駆動力により縫針１０と共に上下に往復駆動され、シリンダベッド部６に設けられた糸輪捕捉器(図示略)と縫針１０との協動により縫目が形成される。 The six needle bars 38 are moved in the left-right direction together with the needle bar case 4 to select a desired needle bar 38, and the needle bar 38 reciprocates up and down together with the sewing needle 10 by the driving force transmitted from the sewing machine motor 77. The seam is formed by the cooperation of the thread catcher (not shown) provided in the cylinder bed portion 6 and the sewing needle 10 when driven.
糸端保持機構４０は、糸通しフック２０に掛けられ、目孔１１の近傍に案内された上糸Ｔの糸端を切断し保持するためのものである。図２に示すように、糸端保持機構４０は、針棒ケース４のフレーム４ａに固定された固定板４８に上端部が固定され、正面視にて略Ｌ字状に形成された板状部材５０を有する。板状部材５０は、その屈曲位置に上糸Ｔを切断するための刃部４９を有し、板状部材５０の右端には、板状部材５０と固定板４８との間に上糸Ｔを案内するために前方へ屈曲された案内部５１が形成されている。糸端保持機構４０に上糸Ｔの糸端を保持させる場合には、案内部５１の後方に案内部５１の右方から左方へ上糸Ｔを移動させると、上糸Ｔが板状部材５０と固定板４８との間に誘導されて挟持され、上糸Ｔが刃部４９まで移動されたら上糸Ｔの糸端を前方へ移動させることで、上糸Ｔが刃部４９により切断される(図２参照)。 The yarn end holding mechanism 40 is for cutting and holding the yarn end of the upper yarn T that is hung on the threading hook 20 and guided in the vicinity of the eye hole 11. As shown in FIG. 2, the thread end holding mechanism 40 has a plate-like member having an upper end fixed to a fixing plate 48 fixed to the frame 4 a of the needle bar case 4 and formed in a substantially L shape when viewed from the front. 50. The plate-like member 50 has a blade portion 49 for cutting the upper thread T at the bent position, and the upper thread T is placed between the plate-like member 50 and the fixed plate 48 at the right end of the plate-like member 50. A guide portion 51 bent forward is formed for guidance. When the yarn end holding mechanism 40 holds the yarn end of the upper yarn T, when the upper yarn T is moved from the right side to the left side of the guide portion 51 behind the guide portion 51, the upper yarn T becomes a plate-like member. When the upper thread T is moved to the blade part 49, the upper thread T is cut by the blade part 49 by moving the thread end of the upper thread T forward. (See FIG. 2).
図７,図８に示すように、布押え部材４１の上端部は、固定部材４３を介して針棒３８に摺動可能に支持された摺動部材４４に固定されている。布押え部材４１は、加工布を押圧するための布押え足部４６と、この布押え足部４６の左端部から上方に延びる脚部４７を有する。 As shown in FIGS. 7 and 8, the upper end portion of the cloth presser member 41 is fixed to a sliding member 44 slidably supported on the needle bar 38 via a fixing member 43. The presser foot member 41 includes a presser foot portion 46 for pressing the work cloth, and a leg portion 47 extending upward from the left end portion of the presser foot portion 46.
糸保持機構４２は、布押え部材４１との協動により上糸Ｔを挟持するためのものである。図８〜図１０に示すように、糸保持機構４２は、布押え部材４１の脚部４７の右側、即ち、布押え足部４６側に上端部がピン６０により取り付けられた板バネ状の弾性糸保持板５５を有する。弾性糸保持板５５は、脚部４７に沿って配設された延設板部５６を備え、この延設板部５６と脚部４７との協動により、弾性糸保持板５５と脚部４７との間に形成された僅かな隙間で上糸Ｔが挟持される。 The thread holding mechanism 42 is for holding the upper thread T in cooperation with the cloth presser member 41. As shown in FIGS. 8 to 10, the thread holding mechanism 42 is a leaf spring-like elastic member whose upper end is attached by a pin 60 to the right side of the leg portion 47 of the presser foot member 41, that is, to the presser foot portion 46 side. A thread holding plate 55 is provided. The elastic yarn holding plate 55 includes an extending plate portion 56 disposed along the leg portion 47, and the elastic yarn holding plate 55 and the leg portion 47 are cooperated with the extending plate portion 56 and the leg portion 47. The upper thread T is pinched by a slight gap formed between the two.
弾性糸保持板５５の下端には、脚部４７よりも前方へ延出され上糸Ｔが最初に掛けられる延出部５７が形成され、弾性糸保持板５５の下端部には、延出部５７の下端から後方且つ上方に傾斜し上糸Ｔを糸通しフック２０へとガイドするためのガイド部５８が設けられている。 An extension portion 57 is formed at the lower end of the elastic yarn holding plate 55 so as to extend forward from the leg portion 47 and the upper thread T is hooked first. A guide portion 58 that is inclined backward and upward from the lower end of 57 and guides the upper thread T to the threading hook 20 is provided.
弾性糸保持板５５の下端部から所定高さの位置の後瑞部に上糸Ｔが係合される係合部５９が形成されている。この係合部５９は、糸通しフック２０に掛けられて上方に引かれる上糸Ｔを係合させて、脚部４７と弾性糸保持板５５との間に挟持された上糸Ｔが係合部５９よりも上方へ移動するのを防ぐためのものである。 An engaging portion 59 is formed in which the upper thread T is engaged with the rear portion of the elastic yarn holding plate 55 at a predetermined height from the lower end portion. The engaging portion 59 engages the upper thread T that is hooked on the threading hook 20 and pulled upward, and the upper thread T held between the leg portion 47 and the elastic thread holding plate 55 is engaged. This is to prevent movement upward from the portion 59.
糸取りバネ４５は、針棒ケース４の上下方向中央部に設けられている。糸取りバネ４５は、巻きバネ(図示略)により常に上方へ付勢されている。従って、上糸Ｔが糸取りバネ４５と縫針１０との間などで弛むと、巻きバネにより糸取りバネ４５が上方へ付勢されているため、糸取りバネ４５が図４の鎖線で示す位置から実線で示す位置に回動されて、上糸Ｔの緊張が保持される。 The thread take-up spring 45 is provided at the center in the vertical direction of the needle bar case 4. The thread take-up spring 45 is always urged upward by a winding spring (not shown). Therefore, when the upper thread T is loosened between the thread take-up spring 45 and the sewing needle 10, the thread take-up spring 45 is urged upward by the winding spring, so that the thread take-up spring 45 is shown by a solid line from the position shown by the chain line in FIG. The tension of the upper thread T is maintained by being rotated to the position shown.
次に、縫針１０の目孔１１に挿通された糸通しフック２０への上糸Ｔの糸掛けについて説明する。まず、アーム部３の上面に載置された糸駒(図示略)から延びる上糸Ｔが天秤６１や糸取りバネ４５などに掛けられ、その上糸Ｔの糸端側が左方になるように、下方から延出部５７に上糸Ｔ(図１０に示す上糸Ｔ')が掛けられる。次に、ガイド部５８に掛けられた上糸Ｔの糸端側を上方へ引くと、ガイド部５８にガイドされて上糸Ｔが上方且つ後方へ移動されて、糸端側の上糸Ｔが脚部４７と延設板部５６との間に挟持され、図９,図１０に示すように、糸通しフック２０に掛けられると共に係合部５９に係合される。その後、上述したように上糸Ｔの糸端を糸端保持機構４０により保持させる。 Next, threading of the upper thread T to the threading hook 20 inserted into the eye hole 11 of the sewing needle 10 will be described. First, an upper thread T extending from a thread spool (not shown) placed on the upper surface of the arm portion 3 is hung on the balance 61, the thread take-up spring 45, etc., and the thread end side of the upper thread T is on the left side. An upper thread T (upper thread T ′ shown in FIG. 10) is hung on the extending portion 57 from below. Next, when the yarn end side of the upper thread T hung on the guide portion 58 is pulled upward, the upper yarn T is guided upward by the guide portion 58 and moved upward and rearward. It is clamped between the leg part 47 and the extended board part 56, and as shown in FIG. 9, FIG. 10, it is hooked on the threading hook 20 and engaged with the engaging part 59. Thereafter, the yarn end of the upper yarn T is held by the yarn end holding mechanism 40 as described above.
図１１に示すように、操作パネル５は、縫製などに関する種々の指令を入力するためのものであって、ディスプレイ６５と、糸通しキー６６などを備えている。尚、この糸通しキー６６は、縫針１０の目孔１１に糸通しフック２０を通させる指令を入力するためのものであり、また、糸通しするために糸通しフック２０を後退駆動させる指令を入力するためのものである。 As shown in FIG. 11, the operation panel 5 is used for inputting various commands relating to sewing and the like, and includes a display 65, a threading key 66, and the like. The threading key 66 is used to input a command to pass the threading hook 20 through the eye hole 11 of the sewing needle 10, and also to issue a command to drive the threading hook 20 backward for threading. It is for input.
次に、コンピュータ７１を含む制御ユニット７０について、図１２のブロック図に基づいて説明する。制御ユニット７０は、糸通し機構１２や糸引き機構１３など多針式ミシンＭの制御全般を司るものである。制御ユニット７０には、ＣＰＵ７２とＲＯＭ７３とＲＡＭ７４とこれらを接続するバス７５などを含むコンピュータ７１と、このコンピュータ７１に入出力するための入出力インターフェース７６などを備えている。入出力インターフェース７６には、ミシンモータ７７のための駆動回路７８と、糸通しモータ１５のための駆動回路７９と、駆動モータ３１のための駆動回路８０などが接続されている。 Next, the control unit 70 including the computer 71 will be described based on the block diagram of FIG. The control unit 70 is responsible for overall control of the multi-needle sewing machine M such as the threading mechanism 12 and the thread drawing mechanism 13. The control unit 70 includes a computer 71 including a CPU 72, a ROM 73, a RAM 74, a bus 75 for connecting them, an input / output interface 76 for inputting / outputting to / from the computer 71, and the like. A drive circuit 78 for the sewing machine motor 77, a drive circuit 79 for the threading motor 15, a drive circuit 80 for the drive motor 31, and the like are connected to the input / output interface 76.
ＲＯＭ７３には、駆動モータ３１や糸通しモータ１５を駆動して糸通しするための糸通し制御プログラムなどが読出し可能に記録されている。ＲＡＭ７４には、糸通しモータ１５や駆動モータ３１の回転角度などの各種データが格納される。 In the ROM 73, a threading control program for driving the threading motor 31 and the threading motor 15 to thread is recorded. The RAM 74 stores various data such as the rotation angle of the threading motor 15 and the drive motor 31.
次に、縫針１０の目孔１１に上糸Ｔを糸通しするために制御ユニット７０がコンピュータ７１に実行させる糸通し制御プログラムについて、図１２のフローチャートを参照して説明する。尚、Ｓｉ(ｉ＝１０，１１，・・・)は、ステップ番号を示す。 Next, a threading control program that is executed by the computer 71 by the control unit 70 to thread the upper thread T through the eye hole 11 of the sewing needle 10 will be described with reference to the flowchart of FIG. Si (i = 10, 11,...) Indicates a step number.
作業者により糸通しキー６６が操作されると(Ｓ１０)、縫製停止状態か否かが判定される(Ｓ１１)。縫製停止状態なら(Ｓ１１；Yes)、糸通しモータ１５が駆動されて、糸通しフック２０が糸掛位置(図３参照)まで移動されて目孔１１に挿通される（Ｓ１２）(第１ルーチンに相当)。次に、作業者により糸通しフック２０に上糸Ｔが掛けられて、上糸Ｔの途中部が布押え部材４１と弾性糸保持板５５に挟持され、糸端が糸端保持機構４０により切断されて保持される。次に、糸通しキー６６が操作されると(Ｓ１３；Yes)、糸通しモータ１５が駆動されて、上糸Ｔが掛けられた糸通しフック２０が目孔１１から抜かれ、図７−２、図８に示す、ループ解消位置へと移動される（Ｓ１４）(第２ルーチンに相当)。 When the operator operates the threading key 66 (S10), it is determined whether or not the sewing is stopped (S11). If the sewing is stopped (S11; Yes), the threading motor 15 is driven, and the threading hook 20 is moved to the threading position (see FIG. 3) and inserted into the eye hole 11 (S12) (first routine). Equivalent). Next, the operator hangs the upper thread T on the threading hook 20, the middle part of the upper thread T is clamped between the presser member 41 and the elastic thread holding plate 55, and the thread end is cut by the thread end holding mechanism 40. Being held. Next, when the threading key 66 is operated (S13; Yes), the threading motor 15 is driven, and the threading hook 20 on which the upper thread T is hung is removed from the eye hole 11, and FIG. It is moved to the loop elimination position shown in FIG. 8 (S14) (corresponding to the second routine).
次に、駆動モータ３１が駆動されて、図７−３に示すように、糸引き部材３３が係合位置に達するまで進出駆動されて、糸掛部３６に上糸Ｔが係合される（Ｓ１５）(第３ルーチンに相当)。次に、駆動モータ３１が駆動されて、図７−４に示すように、糸引き部材３３が所定距離だけ後退駆動される(Ｓ１６)。尚、ここでいう所定距離とは、糸端保持機構４０による上糸Ｔの糸端が解除されない程度の糸引き部材３３の移動量のことである。 Next, the drive motor 31 is driven and, as shown in FIG. 7C, the advancement drive is performed until the yarn pulling member 33 reaches the engagement position, and the upper yarn T is engaged with the yarn hooking portion 36 ( S15) (corresponding to the third routine). Next, the drive motor 31 is driven, and the thread drawing member 33 is driven backward by a predetermined distance as shown in FIG. 7-4 (S16). Here, the predetermined distance is the amount of movement of the yarn pulling member 33 to such an extent that the yarn end of the upper yarn T by the yarn end holding mechanism 40 is not released.
次に、駆動モータ３１が駆動されて、図７−５に示すように、糸引き部材３３が進出方向へ移動され、後糸掛部３６ｃにより上糸Ｔが前方へ移動されて、糸駒から上糸Ｔが繰り出される（Ｓ１７）。次に、駆動モータ３１が駆動されて、糸引き部材３３が待機位置に達するまで後退方向へ駆動されて、糸端保持機構４０による糸端保持が解消されると共に、糸ループＬが解消され、上糸Ｔが完全に目孔１１に糸通しされる（Ｓ１８）(Ｓ１６〜Ｓ１８までが第４ルーチンに相当)。次に、糸通しモータ１５が駆動されて糸通しフック２０が待機位置へと移動される(Ｓ１９)。 Next, as shown in FIG. 7-5, the drive motor 31 is driven to move the yarn pulling member 33 in the advance direction, and the upper yarn T is moved forward by the rear yarn hooking portion 36c. The upper thread T is fed out (S17). Next, the drive motor 31 is driven and driven in the backward direction until the yarn pulling member 33 reaches the standby position, so that the yarn end holding by the yarn end holding mechanism 40 is canceled and the yarn loop L is canceled, The upper thread T is completely threaded through the eye hole 11 (S18) (S16 to S18 correspond to the fourth routine). Next, the threading motor 15 is driven and the threading hook 20 is moved to the standby position (S19).
次に、上述の実施例の作用及び効果について説明する。
多針式ミシンＭによれば、糸替えの際に糸払いするために設けられている糸引き機構１３により、糸通しする場合に縫針１０の目孔１１と糸通しフック２０との間に形成される糸ループＬを解消して、目孔１１に上糸Ｔを完全に糸通しすることができる。糸引き部材３３の糸掛部３６に糸ループＬが係合された状態で、糸引き部材３３が上糸Ｔと共に進出方向に移動されて、上糸Ｔが糸駒から繰り出されるので、糸端保持機構４０による上糸Ｔの糸端保持が解消され、上糸Ｔが弛み、糸取りバネ４５により上糸Ｔが引かれても、上糸Ｔが縫針１０の目孔１１から抜けることがなく、確実に糸通しすることができる。また、上糸Ｔを繰り出して上糸Ｔを弛ませることで、糸通しフック２０からの上糸Ｔの離脱を確実なものとすることができる。
Next, the operation and effect of the above-described embodiment will be described.
According to the multi-needle type sewing machine M, the thread pulling mechanism 13 provided for thread removal at the time of thread change is formed between the eye hole 11 of the sewing needle 10 and the threading hook 20 when threading. Thus, the thread loop L is eliminated, and the upper thread T can be completely threaded through the eye hole 11. In a state where the yarn loop L is engaged with the yarn hooking portion 36 of the yarn pulling member 33, the yarn pulling member 33 is moved together with the upper yarn T in the advancing direction, and the upper yarn T is fed out from the yarn piece. Even if the upper end of the upper thread T by the holding mechanism 40 is released, the upper thread T is loosened, and the upper thread T is pulled by the thread take-up spring 45, the upper thread T does not come out of the eye hole 11 of the sewing needle 10, The threading can be reliably performed. Further, the upper thread T is unreeled and the upper thread T is loosened, so that the upper thread T can be reliably detached from the threading hook 20.
更に、糸引き部材３３の先端部に、糸引き部材の進出駆動時に上糸Ｔと係合する後糸掛部３６ｂと前糸掛部３６ｃを設けたことにより、糸引き部材３３の進出駆動及び後退駆動の際に上糸Ｔと確実に係合させて、上糸Ｔの繰り出し及び引き込み動作を確実なものとすることができる。また、糸案内溝３６ｄを設けたことにより、糸引き部材３３の進出駆動時に上糸Ｔを確実に後糸掛部３６ｂに案内することができる。 Furthermore, the rear end hooking portion 36b and the front yarn hooking portion 36c that are engaged with the upper thread T when the yarn pulling member 33 is driven to advance are provided at the front end of the yarn pulling member 33. The upper thread T can be reliably engaged with the upper thread T at the time of backward driving, and the upper thread T can be reliably fed out and retracted. Further, by providing the yarn guide groove 36d, the upper yarn T can be reliably guided to the rear yarn hooking portion 36b when the yarn pulling member 33 is driven to advance.
以上説明した実施例を部分的に変更した変更例について説明する。
１）上述の実施例においては、単頭式の多針式ミシンに本発明を適用したが、多頭式のミシンや単針式のミシンに本発明を適用してもよい。
２）上述の実施例においては、糸掛部３６に上糸Ｔが係合された後、一度だけ糸引き部材３３を進出方向へ移動させて上糸Ｔを繰り出したが、複数回糸引き部材３３を進出方向と後退方向へ交互に移動させて上糸Ｔを繰り出してもよい。
３）上述の実施例においては、糸掛部３６に上糸Ｔが係合された糸引き部材３３を後退方向へ移動させた後、糸引き部材３３を進出方向へ移動させて、上糸Ｔを繰り出したが、糸掛部３６に上糸Ｔが係合された後、糸引き部材３３を後退方向へ移動させることなく、進出方向へ移動させて上糸Ｔを繰り出してもよい。
A modified example in which the embodiment described above is partially modified will be described.
1) In the above-described embodiments, the present invention is applied to a single-head multi-needle sewing machine, but the present invention may be applied to a multi-head sewing machine or a single-needle sewing machine.
2) In the above embodiment, after the upper thread T is engaged with the yarn hooking portion 36, the upper thread T is fed out by moving the thread pulling member 33 in the advance direction only once. The upper thread T may be fed out by alternately moving 33 in the advance direction and the reverse direction.
3) In the above-described embodiment, after the yarn pulling member 33 having the upper yarn T engaged with the yarn hooking portion 36 is moved in the backward direction, the yarn pulling member 33 is moved in the advance direction, and the upper yarn T However, after the upper yarn T is engaged with the yarn hooking portion 36, the upper yarn T may be fed out by moving in the advance direction without moving the yarn pulling member 33 in the backward direction.
尚、本発明は以上説明した実施の形態に限定されるものではなく、当業者であれば、本発明の趣旨を逸脱しない範囲で前記実施の形態に種々の変更を付加して実施することができ、本発明はそれらの変更の形態をも包含するものである。 Note that the present invention is not limited to the above-described embodiment, and those skilled in the art can implement various modifications to the above-described embodiment without departing from the spirit of the present invention. In addition, the present invention includes such modified forms.
Ｍ 多針式ミシン
１０ 縫針
１１ 目孔
１２ 糸通し機構
１３ 糸引き機構
２０ 糸通しフック
３３ 糸引き部材
３６ 糸掛部
３６ｂ 前糸掛部
３６ｃ 後糸掛部
３６ｄ 糸案内溝
４０ 糸端保持機構
６６ 糸通しキー
７０ 制御ユニット
７１ コンピュータ
Ｌ 糸ループ
Ｔ 上糸
M Multi-needle sewing machine 10 Sewing needle 11 Eye hole 12 Threading mechanism 13 Threading mechanism 20 Threading hook 33 Threading member 36 Threading part 36b Front threading part 36c Rear threading part 36d Thread guide groove 40 Thread end holding mechanism 66 Threading key 70 Control unit 71 Computer L Thread loop T Upper thread
Claims (4)
前記糸引き部材の先端部には、糸引き部材の進出方向と後退方向に糸を移動可能な糸掛部が形成され、
前記制御手段は、糸通しフックにより縫針の目孔に糸通しされたループ状の糸を前記糸掛部に係合可能な係合位置まで前記糸引き部材を進出駆動させた後、前記糸引き部材を後退駆動させて前記糸端保持手段による糸の保持を解消させるまでの間に、少なくとも一度前記糸引き部材を進出駆動させて前記糸掛部により糸を前記進出方向に移動させて糸を繰り出すことを特徴とするミシン。 Threading means for threading through the threaded hole of the sewing needle by threading hook, threading means including threading member for threading the thread extending downward through the threaded hole of the sewing needle, and threading hook In a sewing machine comprising a yarn end holding means for holding the yarn end of the yarn and a control means for controlling the yarn pulling means,
At the tip of the yarn pulling member, a yarn hooking portion capable of moving the yarn in the advance direction and the reverse direction of the yarn pulling member is formed,
The control means drives the thread pulling member to advance to an engagement position where the loop thread threaded through the thread hole of the sewing needle by the threading hook can be engaged with the thread hook, and then the thread pulling member. The thread pulling member is driven to advance at least once and the yarn is moved in the advance direction by the yarn hooking portion between the time when the member is driven backward and the holding of the yarn by the yarn end holding means is canceled. A sewing machine characterized by feeding out.
前記第１操作部からの指令に応答して縫針の目孔に糸通しフックを通す第１ルーチンと、
前記第２操作部からの指令に応答して糸通しするために糸が掛けられた糸通しフックを目孔から抜き、所定距離移動させたループ解消位置に停止させる第２ルーチンと、
前記糸引き部材を進出駆動させて、糸通しフックにより縫針の目孔から延びたループ状の糸に、糸引き手段の糸掛部を係合させる第３ルーチンと、
前記糸引き部材を後退駆動させて前記糸端保持手段による糸端保持を解消させるまでの間に、少なくとも一度糸引き部材を進出駆動させて糸を繰り出してから糸端保持を解消させる第４ルーチンと、
を備えたことを特徴とする糸通し制御プログラム。
Threading means for threading through the threaded hole of the sewing needle, and threading the looped thread threaded through the threaded hole of the sewing needle by the threading hook and provided at the tip of the threading member A thread pulling means capable of feeding a thread by a thread hooking portion, a thread end holding means for holding a thread end of the thread threaded on the threading hook, and the thread pulling means and the threading means are controlled. A control unit; a first operation unit that inputs a command to pass the threading hook through the eye of the sewing needle; and a second operation unit that inputs a command to drive the threading hook backward for threading. In the sewing machine, a threading control program to be executed by a computer of the control means to thread the eye of the sewing needle,
A first routine for passing a threading hook through the eye of the sewing needle in response to a command from the first operation section;
A second routine for removing a threading hook on which a thread has been hung in order to thread in response to a command from the second operation unit, and stopping the loop at a loop release position moved by a predetermined distance;
A third routine in which the thread pulling member is driven to advance, and a thread hooking portion of the thread pulling means is engaged with a loop-shaped thread extending from the thread of the sewing needle by a threading hook;
A fourth routine for canceling the holding of the yarn end after the yarn pulling member is driven forward to feed out the yarn at least once until the yarn pulling member is driven backward to cancel the yarn end holding by the yarn end holding means. When,
A threading control program comprising:
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| JP (1) | JP3994391B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2447403A1 (en) | 2010-10-28 | 2012-05-02 | Brother Kogyo Kabushiki Kaisha | Sewing machine and computer program product |
| EP2484827A1 (en) | 2011-01-20 | 2012-08-08 | Brother Kogyo Kabushiki Kaisha | Sewing machine and computer program product stored on non-transitory computer-readable medium |
| US8594830B2 (en) | 2011-04-27 | 2013-11-26 | Brother Kogyo Kabushiki Kaisha | Computer controlled embroidery sewing machine with image capturing |
| US10590579B2 (en) | 2015-09-30 | 2020-03-17 | Brother Kogyo Kabushiki Kaisha | Sewing machine and non-transitory computer-readable medium |
| US10626534B2 (en) | 2015-09-29 | 2020-04-21 | Brother Kogyo Kabushiki Kaisha | Sewing machine and non-transitory computer-readable medium |
-
2003
- 2003-08-29 JP JP2003306783A patent/JP3994391B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2447403A1 (en) | 2010-10-28 | 2012-05-02 | Brother Kogyo Kabushiki Kaisha | Sewing machine and computer program product |
| US8909366B2 (en) | 2010-10-28 | 2014-12-09 | Brother Kogyo Kabushiki Kaisha | Sewing machine and computer program product |
| EP2484827A1 (en) | 2011-01-20 | 2012-08-08 | Brother Kogyo Kabushiki Kaisha | Sewing machine and computer program product stored on non-transitory computer-readable medium |
| US8594829B2 (en) | 2011-01-20 | 2013-11-26 | Brother Kogyo Kabushiki Kaisha | Sewing machine and computer program product stored on non-transitory computer-readable medium |
| US8594830B2 (en) | 2011-04-27 | 2013-11-26 | Brother Kogyo Kabushiki Kaisha | Computer controlled embroidery sewing machine with image capturing |
| US10626534B2 (en) | 2015-09-29 | 2020-04-21 | Brother Kogyo Kabushiki Kaisha | Sewing machine and non-transitory computer-readable medium |
| US10590579B2 (en) | 2015-09-30 | 2020-03-17 | Brother Kogyo Kabushiki Kaisha | Sewing machine and non-transitory computer-readable medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3994391B2 (en) | 2007-10-17 |
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