JP2000116971A - Single thread loop sewing machine and seam - Google Patents
Single thread loop sewing machine and seamInfo
- Publication number
- JP2000116971A JP2000116971A JP10298642A JP29864298A JP2000116971A JP 2000116971 A JP2000116971 A JP 2000116971A JP 10298642 A JP10298642 A JP 10298642A JP 29864298 A JP29864298 A JP 29864298A JP 2000116971 A JP2000116971 A JP 2000116971A
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- Japan
- Prior art keywords
- thread
- sewing
- needle
- stitch
- sewing machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、ミシン針とルー
パーとにより一本の糸で縫目を形成していく単糸環縫い
ミシン、並びに、１本の糸で形成される単糸環縫いの縫
い始め近傍に形成される縫目に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single thread ring stitch sewing machine in which a stitch is formed with a single thread using a sewing needle and a looper, and a single thread ring stitch formed with a single thread. It relates to a seam formed near the start of sewing.
【０００２】[0002]
【従来の技術】図９に示すように、針先に糸が通され昇
降運動して被縫製物８２を貫通するミシン針８０と、被
縫製物８２の下方でミシン針８０の糸をたぐるルーパー
８１とを備え、これらミシン針８０とルーパー８１によ
り一本の糸で縫目を形成していく単糸環縫いミシンは、
周知の技術である。従来の単糸環縫いミシンにおいて
は、縫い始めに針先の糸がルーパー８１により手繰られ
るため、縫い始めの糸端Ｌ０がルーパー８１側に抜けた
状態に縫製が仕上がる。また、従来の単糸環縫いミシン
の縫い終りの縫製処理は、図１０に示すように、ルーパ
ー８１が糸を手繰ってミシン針８０が上昇した後、被縫
製物８２の下側で図示しない糸切断装置により糸切りを
行なって完了する。従って、縫い終りの糸端Ｌ９は、被
縫製物の下側に抜けた状態に縫製が仕上がる。2. Description of the Related Art As shown in FIG. 9, a sewing machine needle 80 through which a thread is passed through a needle tip to ascend and descend to penetrate a sewing object 82, and a looper which passes a thread of the sewing machine needle 80 below the sewing object 82. A single thread ring stitch sewing machine having a sewing thread 80 and a looper 81 forming a stitch with one thread is provided by:
This is a well-known technique. In the conventional single-thread ring stitch sewing machine, the thread at the needle point is hand-wound by the looper 81 at the start of sewing, so that the sewing is finished in a state where the thread end L0 at the start of sewing comes off to the looper 81 side. As shown in FIG. 10, the conventional sewing process at the end of sewing of the single-thread chain stitch sewing machine is not shown below the sewing object 82 after the looper 81 has performed the thread and the sewing needle 80 has risen. The thread is cut by the thread cutting device and the process is completed. Therefore, the sewing is finished in a state where the thread end L9 at the end of sewing is pulled out below the sewing object.
【０００３】また、従来の単糸環縫いミシンとして、縫
い終りの縫目が解けないように、最後の針落ち位置を一
針前の針落ち位置と同一点にしたり、ルーパーによる最
後の糸編みの方法を変えるなどの処理を行うミシンも開
発されている。このような単糸環縫いミシンによる縫い
終りの縫目を図１１に示す。同図（ａ）は、最後の針落
ち位置を一針前の針落ち位置と同一点にしたもの、
（ｂ）はルーパーによる糸編み方法を変えたものであ
る。[0003] Further, as a conventional single thread ring stitch sewing machine, the last needle drop position is set to the same point as the previous needle drop position, or the last thread knitting by a looper so that the stitch at the end of sewing is not released. Sewing machines that perform processing such as changing the method have also been developed. FIG. 11 shows a stitch at the end of sewing by such a single-thread ring stitch sewing machine. FIG. 4A shows the last needle drop position at the same point as the previous needle drop position.
(B) shows a variation of the method of knitting with a looper.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来の単糸環縫いミシンの縫い始めの縫目では、図９の矢
印Ｆ１，Ｆ２の方向に力が掛かり下布と上布が広げられ
ると、糸端が矢印Ａ方向に抜けて縫目が解けていくとい
う問題を有している。また、従来の単糸環縫いミシンの
縫い終わりの縫目では、図１０に示すように、糸が矢印
Ｂ方向に引かれて糸端が上側に抜けてしまうと、その
後、糸端を引っ張ることで縫目が一気に解けてしまうと
いう問題を有している。また、図１１に示すように、上
記従来の縫い終りに特別な処理を施している縫目であっ
ても、例えば同図（ａ）の縫目では、上布と下布が広げ
られて糸が矢印Ｃ方向に引かれることに対しては強い縫
目であるものの、最後の縫目が引き締められてなく緩い
縫目になっているため、糸端部が何度もいじられて矢印
Ｄ方向に押されることで最後の縫目が解け易いという問
題がある。However, in the above-mentioned stitches at the start of sewing of the conventional single-thread ring stitch sewing machine, when a force is applied in the directions of arrows F1 and F2 in FIG. There is a problem that the thread ends come off in the direction of arrow A and the stitches are unraveled. Further, in the conventional sewing at the end of sewing of the single thread chain stitch sewing machine, as shown in FIG. 10, when the thread is pulled in the direction of arrow B and the thread end comes off upward, then the thread end is pulled. However, there is a problem that the seam is unraveled at once. Further, as shown in FIG. 11, even in the case of the above-described conventional seam in which special processing is performed at the end of sewing, for example, in the case of the seam shown in FIG. Is a strong seam against being pulled in the direction of arrow C, but the last seam is not tightened and is a loose seam. There is a problem that the last seam is easily unraveled by being pushed.
【０００５】また、同図（ｂ）の縫目では、最後の縫目
自体は固くなっているので、糸端部が矢印Ｆ方向に押さ
れても縫目は解け難くなっているものの、上布と下布が
広がって糸に矢印Ｅ方向の力が掛かることに対して弱
く、この力により縫目が簡単に解けてしまうという問題
を有している。単糸環縫いミシンは、１本の糸を使用し
単純な構成で縫目が形成できるという利点を有しながら
も、上述のように糸端が解けやすいという課題を有して
いるため、広く使用されないのが現状である。In the case of the stitch shown in FIG. 1B, the last stitch itself is hardened, so that even if the thread end is pushed in the direction of arrow F, the stitch is difficult to be unraveled. There is a problem that the cloth and the lower cloth are weakened when the force in the direction of arrow E is applied to the thread due to the spread of the cloth and the seam is easily released by this force. Single thread ring stitch sewing machines have the advantage that stitches can be formed with a simple configuration using one thread, but also have the problem that the thread ends are easy to unravel as described above. It is currently not used.
【０００６】この発明は、上記課題を解決するためにな
されたもので、縫い始めや縫い終りの縫目を解け難く処
理できる単糸環縫いミシン、および、その縫目を提供す
ることを目的としている。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a single thread ring stitch sewing machine which can process stitches at the start and end of sewing so as to be difficult to unravel, and an object thereof. I have.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するた
め、請求項１記載の発明は、針先に糸が通され昇降運動
して被縫製物を貫通するミシン針と、被縫製物の下方で
ミシン針の糸をたぐるルーパーとを備え、前記ミシン針
とルーパーとにより一本の糸で縫目を形成していく単糸
環縫いミシンにおいて、少なくともミシン針が被縫製物
に刺さる縫い始めの時点に、被縫製物より上方でミシン
針より糸端側の糸を保持している糸保持手段を備えた構
成とした。SUMMARY OF THE INVENTION In order to solve the above problems, a first aspect of the present invention is to provide a sewing machine needle in which a thread is passed through a needle point, the needle moves up and down, and penetrates a workpiece. In a single-thread ring stitch sewing machine in which a sewing machine is provided with a looper for threading a thread of a sewing machine, and the sewing needle and the looper form a stitch with one thread, at least a sewing start at which the sewing machine needle stabs a workpiece. At the time, a configuration is provided in which a thread holding means for holding a thread on the thread end side above the sewing needle above the workpiece is provided.
【０００８】この請求項１記載の発明によれば、縫い始
めに糸を保持する糸保持手段により、縫い始めの糸端が
従来のように被縫製物の下方に抜けず、上側に残った状
態で縫製を仕上げることが出来る。従って、縫い始めの
糸端が被縫製物の下側に抜けている従来の縫目に比べ
て、縫い始めの縫目が強固になり、縫目の解け難い縫製
を実現できる。According to the first aspect of the present invention, the thread holding means for holding the thread at the start of sewing does not cause the thread end at the start of sewing to fall below the work to be sewn as in the prior art, but remains on the upper side. You can finish sewing with. Therefore, compared to the conventional stitches in which the thread ends at the start of sewing are pulled out below the sewing object, the stitches at the start of sewing are strengthened, and it is possible to realize stitching in which the stitches are difficult to release.
【０００９】請求項２記載の発明は、針先に糸が通され
昇降運動して被縫製物を貫通するミシン針と、被縫製物
の下方でミシン針の糸をたぐるルーパーとを備え、前記
ミシン針とルーパーとにより一本の糸で縫目を形成して
いく単糸環縫いミシンにおいて、縫い始めから２針目又
は２針目以降の所定針目の針落ち位置と、その次の針落
ち位置とが同一点になるように被縫製物を送る布送り手
段を備えた構成とした。According to a second aspect of the present invention, the sewing machine includes a sewing machine needle through which a thread is passed through a needle tip and which moves up and down to penetrate a sewing object; and a looper which passes a thread of the sewing machine needle below the sewing object. In a single thread and ring stitch sewing machine in which a stitch is formed with one thread using a sewing needle and a looper, a needle drop position of a second needle or a predetermined needle after the second stitch from the start of sewing, and a next needle drop position Are provided with a cloth feeding means for feeding a sewn material so that the same point is obtained.
【００１０】この請求項２記載の発明によれば、２針目
又は２針目以降（例えば３〜５針目）の所定針目におい
て同一点で２回針落ちすることとなり、この２回の針落
ちの間、ルーパーが同一点で２回糸を編み込むこととな
る。そして、この２回の編み込みにより結び目が形成さ
れる。従って、縫い始めの縫目が強固になり、縫目の解
け難い縫製を実現できる。According to the second aspect of the present invention, the needle drops twice at the same point at the second stitch or at the predetermined stitch after the second stitch (for example, the third to fifth stitches). The looper will knit the yarn twice at the same point. And a knot is formed by these two braids. Therefore, the stitch at the start of sewing becomes strong, and it is possible to realize stitching that is difficult to remove.
【００１１】なお、上記所定針目を２針目とすること
で、１針目からの縫目が解け難くなり好ましいが、３針
目や４針目としても縫い始め近傍で縫目が解け難くなり
効果的である。また、布送り手段の送り量を所定針目と
次の針目でゼロにする構成は、電気的な制御により構成
することも、カムなどを用いて機械的に構成することも
出来る。It is preferable to set the predetermined stitch to the second stitch because the stitch from the first stitch becomes difficult to unravel. However, the stitch from the third stitch or the fourth stitch is hard to unravel near the start of sewing and is effective. . Further, the configuration in which the feed amount of the cloth feeding means is set to zero at the predetermined stitch and the next stitch can be configured by electric control or can be configured mechanically using a cam or the like.
【００１２】請求項３記載の発明は、請求項２記載の単
糸環縫いミシンにおいて、ミシン針が被縫製物に刺さる
縫い始めの時点に被縫製物より上方でミシン針より糸端
側の糸を保持していると共に、当該保持を少なくとも前
記所定針目の次の針落ちが完了する時点まで継続する糸
保持手段を備えた構成とした。According to a third aspect of the present invention, in the single thread ring stitch sewing machine according to the second aspect, at the time of the start of sewing when the sewing needle stabs the workpiece, the thread on the thread end side above the sewing workpiece and above the sewing needle is removed. A thread holding means for holding the thread and continuing the holding at least until the next needle drop of the predetermined stitch is completed is provided.
【００１３】この請求項３記載の発明によれば、ルーパ
ーによる上記２回の編み込みの間、糸保持手段により糸
端が保持されて糸に強いテンションが掛けられる。そし
て、このテンションにより、上記２回の編み込みで形成
される結び目がより強固に結び付くこととなる。従っ
て、縫い始めの縫目がより強固になり、縫目のより解け
難い縫製を実現できる。According to the third aspect of the present invention, the yarn end is held by the yarn holding means during the two-time weaving by the looper, and a strong tension is applied to the yarn. Then, due to this tension, the knot formed by the above-described two braids is more firmly tied. Therefore, the seam at the start of sewing becomes stronger, and sewing that is more difficult to unravel can be realized.
【００１４】請求項４記載の発明は、請求項１又は３に
記載の単糸環縫いミシンにおいて、縫い始めに保持され
被縫製物の上面側に残った糸端を被縫製物の上面に近い
位置で切断する糸端切断手段を備えた構成とした。According to a fourth aspect of the present invention, in the single thread ring stitch sewing machine according to the first or third aspect, the thread end retained at the start of sewing and remaining on the upper surface side of the sewing target is close to the upper surface of the sewing target. The device is provided with a yarn end cutting means for cutting at a position.
【００１５】この請求項４記載の発明によれば、糸保持
手段により保持され被縫製物の上面側に飛び出た糸端を
被縫製物の上面に近い位置で切断して、仕上がりの美し
い縫製を実現できる。According to the fourth aspect of the present invention, the thread end held by the thread holding means and protruding toward the upper surface side of the sewing object is cut at a position close to the upper surface of the sewing object, thereby achieving a beautifully finished sewing. realizable.
【００１６】請求項５記載の発明は、針先に糸が通され
昇降運動して被縫製物を貫通するミシン針と、被縫製物
の下方でミシン針の糸をたぐるルーパーとを備え、前記
ミシン針とルーパーとにより一本の糸で縫目を形成して
いく単糸環縫いミシンにおいて、最終針目の針落ち位置
とその前の針落ち位置とが同一点になるように被縫製物
を送る布送り手段と、最終針目の針落ちからミシン針が
上昇した後に被縫製物より上方で糸を手繰って切断する
糸切り手段とを備えた構成とした。According to a fifth aspect of the present invention, the sewing machine includes a sewing machine needle through which a thread is passed through a needle tip, the sewing machine moves up and down, and penetrates an object to be sewn. In a single-thread ring stitch sewing machine that forms a stitch with one thread using a sewing needle and a looper, the sewing object is set so that the needle drop position of the last needle is the same as the needle drop position in front of it. The sewing machine is provided with a cloth feeding means for feeding, and a thread cutting means for manually cutting and cutting the thread above the sewing object after the sewing needle has risen from the needle drop of the last needle.
【００１７】この請求項５記載の発明によれば、最終針
目において同一点で２回針落ちするので、この２回の針
落ちの間にルーパーが同一点で２回糸を編み込んで結び
目を形成する。更に、従来のように糸切り手段が被縫製
物の下側でなく上方にあるので、結び目を形成した後、
針が上昇して糸を引っ張り、その後、糸切り手段が糸を
手繰り糸に大きなテンションが掛けられる。そして、こ
のテンションにより結び目を強固に結び合わせる。従っ
て、縫い終わりの縫目が強固になり、縫目の解け難い縫
製を実現できる。According to the fifth aspect of the present invention, since the needle drops twice at the same point at the last stitch, the looper knits the yarn twice at the same point during the two needle drops to form a knot. I do. Further, since the thread trimming means is located above the sewing object, not below, as in the prior art, after forming the knot,
The needle ascends and pulls the thread, after which the thread cutting means puts a large tension on the hand-drawn thread. Then, the knot is tightly tied by this tension. Therefore, the stitch at the end of the stitch is strengthened, and it is possible to realize a stitch that is hard to be stitched.
【００１８】請求項６記載の発明は、１本の糸で形成さ
れる単糸環縫いの縫い始め近傍に形成される縫目であっ
て、第１の針落ち位置を通過して被縫製物の一面側で第
２の針落ち位置まで伸びるループ状の第１ループ部と、
第２の針落ち位置を通過する２本の第１通過糸部および
第２通過糸部と、被縫製物の一面側で第２の針落ち位置
から第３の針落ち位置に伸びるループ状の第２ループ部
とを備え、前記第１通過糸部の一端側は被縫製物の他面
側で前記第１ループ部の一端側とつながり、前記第２通
過糸部の一端側は被縫製物の他面側で第３の針落ち位置
に伸び、前記第２通過糸部の他端側は被縫製物の一面側
で前記第２ループ部の一端側につながり、前記第１通過
糸部の他端側は前記第１ループ部の内側を一方向に通過
した後、前記第２ループ部の両端をくくり、その後、第
１ループ部の内側を逆方向に通過して第２ループ部の他
端部につながっている構成とした。According to a sixth aspect of the present invention, there is provided a stitch formed near the start of single thread and ring sewing formed of one thread, and the sewing object passes through the first needle drop position. A loop-shaped first loop portion extending to a second needle drop position on one surface side of
Two first passing thread portions and a second passing thread portion passing through the second needle drop position, and a loop-shaped extending from the second needle drop position to the third needle drop position on one surface side of the workpiece. A second loop portion, one end of the first passing thread portion is connected to one end of the first loop portion on the other surface side of the sewing object, and one end portion of the second passing thread portion is an sewing object. The other end of the second passing thread portion extends to the third needle drop position, and the other end of the second passing thread portion is connected to one end of the second loop portion on one surface side of the sewing object, and The other end side passes through the inside of the first loop portion in one direction, then cuts both ends of the second loop portion, and then passes through the inside of the first loop portion in the opposite direction, and passes through the other end of the second loop portion. It was configured to be connected to the end.
【００１９】この請求項６記載の縫目は、例えば、請求
項２〜４の単糸環縫いミシンにより形成される縫い始め
の縫目であり、単糸環縫いの縫目を強固で解け難いもの
とする。The stitch according to the sixth aspect is, for example, a stitch at the start of sewing formed by the single thread ring stitch sewing machine of the second to fourth aspects. Shall be.
【００２０】[0020]
【発明の実施の形態】以下、この発明の実施の形態につ
いて、図１〜図８の図面を参照しながら説明する。図１
と図２は、本発明の実施の形態の単糸環縫いミシン１を
示すもので、図１は正面図、図２は側面図である。図３
は、単糸環縫いミシン１の糸端切断器１２を示す斜視図
である。これらの図中、ＣＬは被縫製物である布を示
す。この実施の形態の単糸環縫いミシン１は、ミシン針
１０、天秤５１や糸調子５２，５３ならびに針板の下方
で針糸を手繰って編んでいくルーパー１１、布を送る布
送り装置５４、糸保持手段と糸切り手段とを兼ね備えた
糸切り・糸保持装置２０、糸端切断器（糸端切断手段）
１２等を備えている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. FIG.
1 and 2 show a single-thread ring stitch sewing machine 1 according to an embodiment of the present invention. FIG. 1 is a front view, and FIG. 2 is a side view. FIG.
1 is a perspective view showing a thread end cutter 12 of a single thread ring stitch sewing machine 1. In these figures, CL indicates a cloth which is a sewing object. The single-thread ring stitch sewing machine 1 of this embodiment includes a sewing machine needle 10, a balance 51, thread tensioners 52 and 53, a looper 11 for manually knitting and knitting a needle thread below a needle plate, and a cloth feeding device 54 for feeding a cloth. , A yarn cutting / thread holding device 20 having both a yarn holding means and a yarn cutting means, a yarn end cutting device (yarn end cutting means)
12 and the like.
【００２１】ミシン針１０、天秤５１、糸調子５２，５
３、並びに、ルーパーは、従来の構成と同様の一般的な
ものであり説明は省略する。糸端切断器１２は、Ｖ字状
のメス部１２ａで縫い始めの糸端Ｌ０を切断するもの
で、針板より上方で糸保持点ｘから縫製物ＣＬの上面の
針落ち点ｙを半径とする円周と縫製物ＣＬ上面との交点
ｚの位置、つまり、ミシン針１０より布の送り方向（矢
印Ｘ方向）に数針分奥方の位置に設けられている。糸端
切断器１２は、布送り装置５４のフレームに取り付けら
れており、縫製物ＣＬの厚さが厚くなると、布送り装置
５４と共にメス部１２ａは縫製物ＣＬ上面ぎりぎりの位
置を保持する。メス部１２ａは糸端切断器１２の底に位
置している。布上面からメス部１２ａまでの高さｈは、
例えば、糸端切断器１２の係止位置を可変にすることで
調整可能になっており、縫製処理前に、メス部１２ａが
形成される縫目には当たらず且つ縫い始めの糸端を短く
切断できる高さに設定する。なお、糸端切断手段は、上
記糸端切断器１２に限られず、例えば、動メスと固定メ
スにより糸を挟んで切断するタイプであっても良いし、
また、常に固定されて動かない構成でなく、縫製開始に
基づき切断位置に移動し、切断後に待機位置に戻る形式
にしても良い。Sewing needle 10, balance 51, thread tension 52, 5
3, and the looper is a general one similar to the conventional configuration, and the description is omitted. The thread end cutter 12 cuts the thread end L0 at the start of sewing with a V-shaped female portion 12a. The needle drop point y on the upper surface of the sewn material CL from the thread holding point x above the needle plate is defined by the radius The sewing machine 10 is provided at the position of the intersection z between the circumference to be sewn and the upper surface of the sewing product CL, that is, a position several stitches behind the sewing needle 10 in the cloth feeding direction (the direction of the arrow X). The thread end cutter 12 is attached to the frame of the cloth feeder 54, and when the thickness of the sewn material CL increases, the female part 12a together with the cloth feeder 54 holds the position just above the upper surface of the sewn material CL. The female part 12 a is located at the bottom of the thread end cutter 12. The height h from the cloth upper surface to the female part 12a is:
For example, the lock position of the thread end cutter 12 can be adjusted by making it variable, so that the thread end at which the female portion 12a is formed does not hit the seam and the thread end at the start of sewing is shortened before the sewing process. Set to a height that can be cut. The yarn end cutting means is not limited to the yarn end cutter 12, and may be, for example, a type in which a moving knife and a fixed knife sandwich a yarn and cut it.
In addition, instead of a structure that is not always fixed and does not move, a format in which the cutting position is moved based on the start of sewing, and the cutting position is returned to the standby position after cutting may be adopted.
【００２２】布送り装置５４は、２個の布送りローラ５
４Ａ，５４Ｂにより布を上下方向から挟んで布を送る形
式の装置である。そして、ミシン針１０を昇降運動させ
るミシンモータと同期して布送りローラ５４Ａ，５４Ｂ
を回転させ、ミシン針１０が上昇している間に所定量布
を移動させていく。また、電気的に布送りローラ５４
Ａ，５４Ｂの回転を制御することで、ミシン針１０の１
回の昇降に対して布送り量を制御することが出来るよう
になっている。すなわち、この制御により縫い始めから
所定針目と次の針目の針落ち位置を同一点としたり、例
えばペダル操作など縫い終りの操作がされたことに基づ
き最終針目の布送り量をゼロにすると云った布の送り制
御が可能になっている。なお、布送り装置は、ミシンの
下軸の回転運動を上下および前後の揺動運動に変換して
布送り歯により布を送るミシン一般的な形式の布送り装
置により構成することも出来る。このような布送り装置
には、布送り歯の上下の揺動と前後の揺動との同期をず
らすことで布送り量を変更する機構が備わっており、こ
の機構をアクチュエータにより動かすことで布の送り量
をゼロにして、同一点に２回以上針落ちを行なわせるこ
とが出来る。The cloth feeding device 54 includes two cloth feeding rollers 5.
4A, 54B is an apparatus of a type in which a cloth is sandwiched from above and below and fed. Then, the cloth feed rollers 54A and 54B are synchronized with a sewing machine motor for moving the sewing needle 10 up and down.
Is rotated, and a predetermined amount of cloth is moved while the sewing machine needle 10 is rising. Also, the cloth feed roller 54 is electrically
By controlling the rotation of A and 54B, one of the sewing machine needles 10 is controlled.
The cloth feed amount can be controlled with respect to the ascending and descending times. That is, this control sets the needle drop position of the predetermined stitch and the next stitch to the same point from the start of sewing, or sets the cloth feed amount of the last stitch to zero based on the operation of the end of sewing such as pedal operation. The feed control of the cloth is enabled. The cloth feeder can also be constituted by a general cloth feeder of a sewing machine that converts the rotational motion of the lower shaft of the sewing machine into up-and-down and back-and-forth swinging motions and feeds the cloth by the cloth feed teeth. Such a cloth feeder is provided with a mechanism for changing the cloth feed amount by shifting the vertical swing of the cloth feed tooth and the synchronization of the swing back and forth, and moving this mechanism by an actuator. The feed amount can be reduced to zero and the same point can be stitched twice or more.
【００２３】図４には、糸切り・糸保持装置２０の分解
斜視図を示す。糸切り・糸保持装置２０は、図１と図４
に示すように、動メス２１、固定メス２４、クランプ部
材２５を備え、動メス２１の溝部２１ａで糸を手繰って
固定メス２４との間に挟むことで糸を切断すると共に、
クランプ部材２５と動メス２１の腹部２１ｂとの間に糸
を挟んで糸を保持する。詳細には、図４に示すように、
エアピストン２３などのアクチュエータで動メス２１を
動かす。動メス２１は介設部材２２に固着され、介設部
材２２はエアピストン２３のプランジャ２３ａの先端ネ
ジ部２３ｂに螺合される。クランプ部材２５は棒状のバ
ネ材２６に固着される。バネ材２６は部材２７の挿通孔
２７ａに通されてビス２７ｂにより固定位置可変な状態
で止着される。部材２７は糸切り・糸保持装置２０のベ
ース部材２８に介設部材２９をはさんで固定される。FIG. 4 is an exploded perspective view of the thread cutting and thread holding device 20. FIGS. 1 and 4
As shown in the figure, a moving knife 21, a fixed knife 24, and a clamp member 25 are provided, and the thread is cut by manually pulling the thread in the groove 21 a of the moving knife 21 and sandwiching the thread with the fixed knife 24.
The yarn is held between the clamp member 25 and the abdomen 21b of the moving knife 21 with the yarn held therebetween. Specifically, as shown in FIG.
The moving knife 21 is moved by an actuator such as an air piston 23. The moving knife 21 is fixed to an interposition member 22, and the interposition member 22 is screwed to a tip screw portion 23 b of a plunger 23 a of the air piston 23. The clamp member 25 is fixed to a rod-shaped spring member 26. The spring material 26 is passed through the insertion hole 27a of the member 27 and fixed by a screw 27b in a state where the fixed position is variable. The member 27 is fixed to a base member 28 of the thread cutting and thread holding device 20 with an intervening member 29 interposed therebetween.
【００２４】また、図示しないが、この実施の形態の単
糸環縫いミシン１は、ＣＰＵ（Central Processing Uni
t ）、ＲＡＭ（Random Access Memory）、ＲＯＭ（Read
Only Memory）を有しプログラム制御可能な制御装置を
備えている。この制御装置には、ミシンのペダルの踏み
量を検出するペダルセンサ、ミシン針１０を昇降運動さ
せるミシンモータ、糸切り・糸保持装置２０のエアピス
トン２３を作動させる電磁弁、布送り装置の布送りモー
タ等が接続されており、ペダルセンサからの検知信号の
入力、上記ミシンモータや電磁弁および布送りモータの
制御が行なわれる。Although not shown, the single thread and chain stitch sewing machine 1 of this embodiment is provided with a CPU (Central Processing Uniform).
t), RAM (Random Access Memory), ROM (Read
Only Memory) and a control device capable of program control. The control device includes a pedal sensor for detecting the amount of depression of the pedal of the sewing machine, a sewing machine motor for moving the sewing needle 10 up and down, an electromagnetic valve for operating the air piston 23 of the thread cutting / thread holding device 20, and a cloth for the cloth feeding device. A feed motor and the like are connected, and input of a detection signal from a pedal sensor and control of the sewing machine motor, the solenoid valve, and the cloth feed motor are performed.
【００２５】次に、上記構成の単糸環縫いミシン１によ
り行なわれる縫製動作について説明を行う。先ず、糸切
り・糸保持装置２０にミシン針１０先から伸びる糸を保
持させた状態で縫製を開始する。なお、糸切り・糸保持
装置２０による糸保持は、以前の縫製終了時の縫い終り
処理時に自動的に行なわれるものである。縫製は、オペ
レータがミシンペダルを踏込むことで開始される。ペダ
ルセンサからペダルの踏込みを示す信号が制御装置に出
力されると、この信号に基づきミシンモータと布送りモ
ータが制御されて、ミシン針１０の昇降およびルーパー
の回転、並びに、布送りが行なわれていく。Next, the sewing operation performed by the single thread ring stitch sewing machine 1 having the above-described configuration will be described. First, the sewing is started in a state where the thread extending from the tip of the sewing needle 10 is held in the thread cutting / thread holding device 20. The thread holding by the thread cutting / thread holding device 20 is automatically performed at the time of the sewing end processing at the end of the previous sewing. Sewing is started when the operator steps on the sewing machine pedal. When a signal indicating the depression of the pedal is output from the pedal sensor to the control device, the sewing machine motor and the cloth feed motor are controlled based on the signal, and the sewing needle 10 is raised and lowered, the looper is rotated, and the cloth is fed. To go.
【００２６】図５は、単糸環縫いミシン１により形成さ
れる縫い始め部分の縫目を示す斜視図で、（ａ）はその
全貌図、（ｂ）は２針目の縫目の拡大図である。布送り
は、縫い始めから２針目と３針目の間で送り量「０」に
制御され、それにより、２針目と３針目との針落ち位置
が同一点となる。また、この針数のカウントは、ミシン
針棒の上位置を検知するセンサと周知のＣＰＵにより計
算される。そして、この２回の針落ちの間にルーパーが
２回糸を編んで結び目３０を形成する。なお、針目とは
針落ちの数の単位を示す。更に、縫い始めから２針目以
上の数針目まで、糸切り・糸保持装置２０が糸端を保持
した状態にあり、この保持により糸にテンションが掛け
られて結び目３０を引き締める。縫目が上記数針目まで
進むと糸端切断器１２により糸端が布上面近傍で切断さ
れ糸端の保持がなくなる。なお、糸保持がされていない
場合の縫い始め部分の縫目の斜視図である図６に示すよ
うに、糸保持がないと結び目３０は形成されるものの、
結び目３０が引き締められず、結び目３０による糸の係
止が弱い状態にあるが、例えば、縫製終了後など、結び
目３０が形成された後で糸端Ｌ０が引っ張られること
で、結び目３０を引き締めることもできる。FIGS. 5A and 5B are perspective views showing stitches at a sewing start portion formed by the single thread ring stitch sewing machine 1. FIG. 5A is a full view thereof, and FIG. 5B is an enlarged view of the second stitches. is there. The cloth feed is controlled to a feed amount “0” between the second and third stitches from the start of sewing, so that the needle drop positions of the second and third stitches are the same. The count of the number of stitches is calculated by a sensor for detecting the upper position of the sewing needle bar and a known CPU. Then, the looper knits the yarn twice to form the knot 30 during the two needle drops. In addition, a stitch indicates a unit of the number of needle drops. Further, the thread trimming / thread holding device 20 holds the thread end from the start of sewing to the second or more stitches, and the tension is applied to the thread by this holding to tighten the knot 30. When the stitch has advanced to the several stitches, the thread end is cut by the thread end cutter 12 near the upper surface of the cloth, and the thread end is no longer held. In addition, as shown in FIG. 6 which is a perspective view of the seam at the start of sewing when the thread is not held, the knot 30 is formed without the thread,
The knot 30 is not tightened and the yarn is not locked by the knot 30 in a weak state. For example, the knot 30 is tightened by pulling the thread end L0 after the knot 30 is formed, for example, after sewing is completed. Can also.
【００２７】次いで、通常の縫製処理が行なわれて、所
望の経路で縫目が形成される。所望の縫目が形成された
らミシンペダルの踏込みを止めてミシンモータを停止す
る。ミシンモータが停止したらミシンペダルを逆方向に
踏み返し縫い終り処理を行う。制御装置はこの踏み返し
により縫い終り処理を開始する。Next, a normal sewing process is performed to form a stitch in a desired path. When the desired stitch is formed, the depression of the sewing machine pedal is stopped and the sewing machine motor is stopped. When the sewing machine motor stops, the sewing machine pedal is depressed in the reverse direction to perform the sewing end processing. The control device starts the sewing end process by this stepping back.
【００２８】図７には、縫い終りの縫目を形成する途中
の状態を示す斜視図を、図８には、完成した縫い終りの
縫目の斜視図を示す。縫い終り処理が開始されると、先
ず、布送りモータが回転されずに、ミシンモータのみが
回転してミシン針１０が針下位置から針下位置へと１回
転する。この処理により、最終針目で同一点に２回ミシ
ン針１０が落とされ、この間、ルーパー１１により２回
糸が編まれて結び目４０が形成される。次に、ミシン針
１０が針下位置から針上位置へと半回転する。この処理
により、ミシン針１０につながる糸がミシン針１０の動
きと天秤により引き上げられ、糸にテンションが掛けら
れる。そして、このテンションにより結び目４０が引き
締められる。ミシン針１０が上死点に達すると、糸切り
・糸保持装置２０のエアーピストン２３が作動されて、
動メス２１がミシン針１０と布との間に渡る糸を大きく
手繰る（図７参照）。そして、この手繰りよせにより糸
が更に矢印Ｇ方向に引き上げられて、結び目４０を強固
に引き締める。その後、糸切り・糸保持装置２０により
糸が切断され、且つ、ミシン針１０に連なる糸が糸切り
・糸保持装置２０に保持される。糸を切断した後、布を
送り方向に抜くと、糸端Ｌ９は針板の針穴、結び目４０
を摩擦抵抗を受けながら抜けるため、この摩擦抵抗によ
り更に結び目４０が引き締められる。なお、糸切断後の
布の取り出しを布送り装置を使用して行うことも出来
る。FIG. 7 is a perspective view showing a state in the middle of forming a seam at the end of sewing, and FIG. 8 is a perspective view of a seam at the end of sewing completed. When the sewing end process is started, first, only the sewing machine motor rotates without rotating the cloth feed motor, and the sewing machine needle 10 makes one rotation from the needle lower position to the needle lower position. By this processing, the sewing needle 10 is dropped twice at the same point at the last stitch. During this time, the thread is knitted twice by the looper 11 to form the knot 40. Next, the sewing needle 10 makes a half turn from the needle lower position to the needle upper position. By this processing, the thread connected to the sewing machine needle 10 is pulled up by the movement of the sewing machine needle 10 and the balance, and tension is applied to the thread. Then, the knot 40 is tightened by this tension. When the sewing needle 10 reaches the top dead center, the air piston 23 of the thread cutting / thread holding device 20 is operated,
The moving knife 21 largely unwinds the thread passing between the sewing needle 10 and the cloth (see FIG. 7). Then, the yarn is further pulled up in the direction of arrow G by this twisting, and the knot 40 is firmly tightened. Thereafter, the thread is cut by the thread cutting / thread holding device 20, and the thread connected to the sewing needle 10 is held by the thread cutting / thread holding device 20. When the cloth is pulled out in the feed direction after cutting the yarn, the yarn end L9 becomes the needle hole of the needle plate, the knot 40.
Through the frictional resistance, the knot 40 is further tightened by the frictional resistance. In addition, removal of the cloth after the yarn cutting can be performed by using a cloth feeder.
【００２９】最後に、縫い始めの結び目（縫目）３０に
ついて図５を参照しつつ説明する。縫い始めに形成され
る結び目３０は、１針目の針落ち位置（第１の針落ち位
置）を通過して布下面側で２針目の針落ち位置まで伸び
るループ状の第１ループ部Ｌ１，Ｌ２と、２針目の針落
ち位置（第２の針落ち位置）を通過する２本の第１通過
糸部Ｌ３および第２通過糸部Ｌ４と、布下面側で２針目
の針落ち位置から４針目の針落ち位置（第３の針落ち位
置）に伸びるループ状の第２ループ部Ｌ５，Ｌ６とから
形成される。なお、３針目は２針目と同じ針落ち位置と
なる。そして、第１通過糸部Ｌ３の上端側は布上面側で
第１ループ部Ｌ１，Ｌ２の一方（Ｌ２）につながり、第
２通過糸部Ｌ４の上端側は布上面側で４針目の針落ち位
置に伸び、第２通過糸部Ｌ４の下端側は布下面側で第２
ループ部Ｌ５，Ｌ６の一方（Ｌ５）につながり、第１通
過糸部Ｌ３の下端側は第１ループ部Ｌ１，Ｌ２の内側を
上から下に通過した後、第２ループ部Ｌ５，Ｌ６の両端
をくくり、その後、第１ループ部Ｌ１，Ｌ２の内側を下
から上に通過して第２ループ部Ｌ５，Ｌ６の他方（Ｌ
６）につながっている。Finally, the knot (seam) 30 at the start of sewing will be described with reference to FIG. The knot 30 formed at the beginning of sewing passes through the first needle drop position (first needle drop position) and extends to the second needle drop position on the lower surface of the cloth, and has a loop-like first loop portion L1, L2. And two first passing thread portions L3 and second passing thread portions L4 passing through a second needle drop position (second needle drop position), and a fourth stitch from the second stitch drop position on the lower surface of the cloth. And a second loop portion L5, L6 having a loop shape extending to the needle drop position (third needle drop position). The third needle is at the same needle drop position as the second needle. The upper end of the first passing thread portion L3 is connected to one of the first loop portions L1 and L2 (L2) on the upper surface of the cloth, and the upper end of the second passing thread portion L4 is the fourth needle drop on the upper surface of the fabric. And the lower end of the second passing thread portion L4
One end (L5) of the loop portions L5, L6, the lower end of the first passing thread portion L3 passes through the inside of the first loop portions L1, L2 from top to bottom, and then both ends of the second loop portions L5, L6. And then pass through the inside of the first loop portions L1 and L2 from below to the other side of the second loop portions L5 and L6 (L
6).
【００３０】以上のように、この実施の形態の単糸環縫
いミシン１によれば、縫い始めに布の上方で糸を保持す
る糸切り・糸保持装置２０により、縫い始めの糸端が従
来のように布の下方に抜けず、上側に残った状態で縫製
を仕上げることが出来る。従って、縫い始めの糸端が布
の下側に抜けている従来の縫目に比べて、縫い始めの縫
目が強固になり、縫目の解け難い縫製を実現できる。ま
た、２針目において同一点で２回針落ちさせるので、ル
ーパーが同一点で２回糸を編み込んで結び目３０を形成
することが出来る。そして、この結び目３０により、縫
目の解け難い縫製を実現できる。更に、結び目３０を形
成する際に、糸切り・糸保持装置２０により糸端が保持
されて糸に強いテンションが掛けられるので、形成され
る結び目３０がより強固に結び付くこととなり、縫目の
より解け難い縫製を実現できる。また、糸端切断器１２
により、糸切り・糸保持装置２０により保持され布の上
面側に飛び出た糸端Ｌ０を布の上面に近い位置で切断し
て、仕上がりの美しい縫製を実現できる。As described above, according to the single thread ring stitch sewing machine 1 of this embodiment, the thread end at the start of sewing is conventionally reduced by the thread trimmer / thread holding device 20 which holds the thread above the cloth at the start of sewing. The sewing can be finished in a state where it does not fall below the cloth and remains on the upper side. Therefore, compared to the conventional stitches in which the thread ends at the start of sewing are pulled out to the lower side of the cloth, the stitches at the start of sewing are strengthened, and it is possible to realize stitching that is difficult to release. Further, since the needle is dropped twice at the same point at the second stitch, the knot 30 can be formed by the looper knitting the yarn twice at the same point. The knot 30 can realize sewing that is difficult to release. Furthermore, when forming the knot 30, since the thread end is held by the thread cutting / thread holding device 20 and a strong tension is applied to the thread, the knot 30 to be formed is more firmly tied, and It is possible to realize sewing that is difficult to unravel. In addition, the yarn end cutter 12
Accordingly, the thread end L0 held by the thread cutting / thread holding device 20 and protruding toward the upper surface side of the cloth can be cut at a position close to the upper surface of the cloth, and a beautifully finished sewing can be realized.
【００３１】また、最終針目において同一点で２回針落
ちして結び目４０を形成し、この結び目４０が形成され
た後に、ミシン針１０が上昇して糸を引っ張り、その
後、糸切り・糸保持装置２０が糸を手繰って糸に大きな
テンションを掛けるので、このテンションにより結び目
を強固に結び合わせることが出来る。更に、布を取り上
げる際に、縫い終りの糸端は針板の針穴と上記縫目の中
を摩擦抵抗を伴って抜けていくので、この摩擦抵抗によ
り更に結び目がきつく締められ、縫目の解け難い縫製を
実現できる。At the last stitch, the needle is dropped twice at the same point to form a knot 40. After the knot 40 is formed, the sewing machine needle 10 is lifted to pull the thread, and thereafter the thread is cut and held. Since the device 20 pulls the yarn and places a large tension on the yarn, this tension allows the knot to be tightly tied. Further, when picking up the cloth, the thread end at the end of the sewing passes through the needle hole of the needle plate and the above-mentioned stitch with frictional resistance, so that the knot is further tightened by this frictional resistance, and the seam is stitched. It is possible to realize sewing that is difficult to unravel.
【００３２】なお、本発明は、この実施の形態の単糸環
縫いミシン１に限られるものでなく、種々の変更があり
得る。例えば、縫い始めの結び目を形成する箇所は、２
針目であると好ましいが、３針目や４針目などとしても
縫い始め近傍を解け難くする。また、縫い始めや縫い終
りにおいて同一点に２回針落ちさせるのみでなく、２回
以上針落ちさせても良い。また、被縫製物は布の他、例
えば紙など種々のものが含まれる。また、糸保持手段や
糸切り手段は、一体のものでなく、別々の構成としても
良いし、その具体的な構成は種々に変更可能である。ま
た、糸保持手段をアクチュエータの作用で糸を保持する
構成とすることで、糸端切断手段による糸端の切断後、
保持している糸ごみを放してバキューム等で吸い排出す
ることも出来る。It should be noted that the present invention is not limited to the single thread and ring stitch sewing machine 1 of the present embodiment, and various modifications can be made. For example, the place to form the knot at the start of sewing is 2
It is preferable that the stitches are stitched, but the third and fourth stitches also make it difficult to unravel the vicinity of the start of sewing. Further, the needle may be dropped not only twice at the same point at the start or end of sewing but also at least twice. In addition, the material to be sewn includes not only cloth but also various things such as paper. Further, the thread holding means and the thread cutting means are not integrated, but may have a separate configuration, and the specific configuration may be variously changed. In addition, since the yarn holding means is configured to hold the yarn by the action of the actuator, after the yarn end is cut by the yarn end cutting means,
It is also possible to release the held lint and suck and discharge it with a vacuum or the like.
【００３３】[0033]
【発明の効果】請求項１記載の発明によれば、縫い始め
に被縫製物の上方で糸を保持する糸保持手段により、縫
い始めの糸端が従来のように被縫製物の下方に抜けず、
上側に残った状態で縫製を仕上げることが出来る。従っ
て、縫い始めの糸端が被縫製物の下側に抜けている従来
の縫目に比べて、縫い始めの縫目が強固になり、縫目の
解け難い縫製を実現できる。According to the first aspect of the present invention, the thread holding means for holding the thread above the workpiece at the beginning of sewing allows the thread end at the start of sewing to fall below the workpiece as in the prior art. Without
The sewing can be finished while remaining on the upper side. Therefore, compared to the conventional stitches in which the thread ends at the start of sewing are pulled out below the sewing object, the stitches at the start of sewing are strengthened, and it is possible to realize stitching in which the stitches are difficult to release.
【００３４】請求項２記載の発明によれば、２針目又は
２針目以降（例えば３〜５針目）の所定針目において同
一点で２回針落ちするので、ルーパーが同一点で２回糸
を編み込み結び目を形成することが出来る。そして、こ
の結び目により、縫目の解け難い縫製を実現できる。According to the second aspect of the present invention, the needle drops twice at the same point at the second stitch or a predetermined stitch after the second stitch (for example, the third to fifth stitches), so that the looper knits the yarn twice at the same point. A knot can be formed. The knot makes it possible to realize sewing that is difficult to release.
【００３５】請求項３記載の発明によれば、請求項２記
載の発明の効果に加え、上記結び目を形成する際に、糸
保持手段により糸端が保持されて糸に強いテンションが
掛けられるので、形成される結び目がより強固に結び付
くこととなり、縫目のより解け難い縫製を実現できる。According to the third aspect of the present invention, in addition to the effect of the second aspect, when forming the knot, the yarn end is held by the yarn holding means and a strong tension is applied to the yarn. Thus, the knot to be formed is more firmly tied, so that it is possible to realize sewing that is more difficult to release.
【００３６】請求項４記載の発明によれば、糸端切断手
段により、糸保持手段により保持され被縫製物の上面側
に飛び出た糸端を被縫製物の上面に近い位置で切断し
て、仕上がりの美しい縫製を実現できる。According to the fourth aspect of the present invention, the yarn end cutting means cuts the yarn end held by the yarn holding means and projected to the upper surface side of the sewing object at a position close to the upper surface of the sewing object. A beautifully finished sewing can be realized.
【００３７】請求項５記載の発明によれば、最終針目に
おいて同一点で２回針落ちして結び目が形成され、結び
目が形成された後に、針が上昇して糸を引っ張り、その
後、糸切り手段が糸を手繰り糸に大きなテンションが掛
けられる。そして、このテンションにより結び目を強固
に結び合わせる。更に、被縫製物を取り上げる際に、縫
い終りの糸端は針板の針穴と上記縫目の中を摩擦抵抗を
伴って抜けていくので、この摩擦抵抗により更に結び目
がきつく締められ、縫目の解け難い縫製を実現できる。According to the fifth aspect of the present invention, the needle is dropped twice at the same point at the last stitch to form a knot, and after the knot is formed, the needle is raised to pull the thread, and thereafter, the thread is cut. Means lay the yarn on the hand-drawn yarn with great tension. Then, the knot is tightly tied by this tension. Further, when picking up the sewing object, the thread end at the end of the sewing passes through the needle hole of the needle plate and the above-mentioned stitch with frictional resistance, so that the knot is further tightened by the frictional resistance and the sewing is performed. Sewing that is difficult to open can be realized.
【００３８】請求項６記載の発明によれば、単糸環縫い
の縫目が強固で解け難いものとなる。According to the sixth aspect of the present invention, the single thread ring stitch is strong and difficult to unravel.
【図１】本発明の実施の形態の単糸環縫いミシンを示す
正面図である。FIG. 1 is a front view showing a single thread ring stitch sewing machine according to an embodiment of the present invention.
【図２】同、単糸環縫いミシンの側面図である。FIG. 2 is a side view of the single thread ring stitch sewing machine.
【図３】同、単糸環縫いミシンの糸端切断器を示す斜視
図である。FIG. 3 is a perspective view showing a thread end cutter of the single thread ring stitch sewing machine.
【図４】同、単糸端縫いミシンの糸切り・糸保持装置の
分解斜視図である。FIG. 4 is an exploded perspective view of the thread trimming / thread holding device of the single thread end stitch sewing machine.
【図５】同、単糸環縫いミシンにより形成される縫い始
め部分の縫目を示す斜視図で、（ａ）はその全貌図、
（ｂ）は２針目の縫目の拡大図である。FIG. 5 is a perspective view showing a stitch at a sewing start portion formed by the single-thread ring stitch sewing machine, in which FIG.
(B) is an enlarged view of the second stitch.
【図６】糸保持がされていない場合の縫い始め部分の縫
目を示す斜視図である。FIG. 6 is a perspective view showing a stitch at a sewing start portion when the thread is not held.
【図７】図１の単糸環縫いミシンによる縫い終りの縫目
を形成する途中の状態を示す斜視図である。FIG. 7 is a perspective view showing a state in the middle of forming a stitch at the end of sewing by the single-thread ring stitch sewing machine of FIG. 1;
【図８】完成した縫い終りの縫目を示す斜視図である。FIG. 8 is a perspective view showing a completed seam at the end of sewing.
【図９】従来の単糸環縫いミシンの縫い始めの状態を示
す側方図である。FIG. 9 is a side view showing a state at the start of sewing of a conventional single thread ring stitch sewing machine.
【図１０】従来の単糸環縫いミシンの縫い終りの状態を
示す側方図である。FIG. 10 is a side view showing a conventional single-thread ring stitch sewing machine at the end of sewing.
【図１１】縫い終りに特殊な処理をする従来の単糸環縫
いミシンにより形成される縫い終わりの縫目を示す斜視
図である。FIG. 11 is a perspective view showing a stitch at the end of sewing formed by a conventional single-thread ring stitch sewing machine that performs special processing at the end of sewing.
１ 単糸環縫いミシン １０ ミシン針 １１ ルーパー １２ 糸端切断器 ２０ 糸切り・糸保持装置 ２１ 動メス ２３ エアーピストン ２４ 固定メス ２５ クランプ部材 ３０ 縫い始めに形成される結び目 ４０ 縫い終りに形成される結び目 ５４ 布送り装置 Ｌ０ 縫い始めの糸端 Ｌ１，Ｌ２ 第１ループ部 Ｌ３ 第１通過糸部 Ｌ４ 第２通過糸部 Ｌ５，Ｌ６ 第２ループ部 Ｌ９ 縫い終りの糸端 DESCRIPTION OF SYMBOLS 1 Single thread ring stitch sewing machine 10 Sewing needle 11 Looper 12 Thread end cutter 20 Thread cutter / thread holding device 21 Moving knife 23 Air piston 24 Fixed knife 25 Clamp member 30 Knot formed at the start of sewing 40 Formed at the end of sewing Knot 54 Cloth feeder L0 Thread end at sewing start L1, L2 First loop portion L3 First passing thread portion L4 Second passing thread portion L5, L6 Second loop portion L9 Thread end at sewing end
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3B150 AA04 CB00 CD07 DE03 DE06 DE07 FH02 FH14 GE13 JA13 LA00 NB03 NB16 NC02 NC03 NC18 QA01 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B150 AA04 CB00 CD07 DE03 DE06 DE07 FH02 FH14 GE13 JA13 LA00 NB03 NB16 NC02 NC03 NC18 QA01
Claims (6)
を貫通するミシン針と、被縫製物の下方でミシン針の糸
をたぐるルーパーとを備え、前記ミシン針とルーパーと
により一本の糸で縫目を形成していく単糸環縫いミシン
において、 少なくともミシン針が被縫製物に刺さる縫い始めの時点
に、被縫製物より上方でミシン針より糸端側の糸を保持
している糸保持手段を備えたことを特徴とする単糸環縫
いミシン。1. A sewing machine comprising: a sewing machine needle having a thread penetrated by a needle to move up and down to penetrate a sewing object; and a looper for passing a thread of the sewing machine needle below the sewing object. In a single-thread chain stitch sewing machine in which a stitch is formed with one thread, at least at the start of sewing when the sewing needle pierces the workpiece, the thread at the thread end side above the sewing workpiece and above the sewing needle is held. A single thread ring stitch sewing machine provided with a thread holding means.
を貫通するミシン針と、被縫製物の下方でミシン針の糸
をたぐるルーパーとを備え、前記ミシン針とルーパーと
により一本の糸で縫目を形成していく単糸環縫いミシン
において、 縫い始めから２針目又は２針目以降の所定針目の針落ち
位置と、その次の針落ち位置とが同一点になるように被
縫製物を送る布送り手段を備えたことを特徴とする単糸
環縫いミシン。2. A sewing machine needle comprising a sewing machine needle, which passes a thread through a needle tip and moves up and down to penetrate an object to be sewn, and a looper for passing a thread of the sewing machine needle below the object to be sewn. In a single-thread ring stitch sewing machine that forms a stitch with one thread, the needle drop position of the second stitch from the start of sewing or the predetermined stitch after the second stitch is the same as the next needle drop position. A single thread ring stitch sewing machine further comprising a cloth feeding means for feeding a workpiece.
て、 ミシン針が被縫製物に刺さる縫い始めの時点に被縫製物
より上方でミシン針より糸端側の糸を保持していると共
に、当該保持を少なくとも前記所定針目の次の針落ちが
完了する時点まで継続する糸保持手段を備えたことを特
徴とする単糸環縫いミシン。3. The single thread ring stitch sewing machine according to claim 2, wherein the sewing needle holds the thread on the thread end side above the sewing object at the time of the start of sewing when the sewing needle stabs the sewing object, A single thread ring stitch sewing machine comprising a thread holding means for continuing the holding at least until the next needle drop of the predetermined stitch is completed.
ンにおいて、 縫い始めに保持され被縫製物の上面側に残った糸端を被
縫製物の上面に近い位置で切断する糸端切断手段を備え
たことを特徴とする単糸環縫いミシン。4. The single-thread ring stitch sewing machine according to claim 1, wherein a thread end retained at the start of sewing and remaining on the upper surface side of the workpiece is cut at a position close to the upper surface of the workpiece. A single thread ring stitch sewing machine comprising cutting means.
を貫通するミシン針と、被縫製物の下方でミシン針の糸
をたぐるルーパーとを備え、前記ミシン針とルーパーと
により一本の糸で縫目を形成していく単糸環縫いミシン
において、 最終針目の針落ち位置とその前の針落ち位置とが同一点
になるように被縫製物を送る布送り手段と、 最終針目の針落ちからミシン針が上昇した後に被縫製物
より上方で糸を手繰って切断する糸切り手段とを備えた
ことを特徴とする単糸環縫いミシン。5. A sewing machine needle comprising a sewing machine needle through which a thread is passed through a needle tip to move up and down to penetrate a sewing object, and a looper for passing a thread of the sewing needle below the sewing object. In a single-thread ring stitch sewing machine that forms a stitch with one thread, a cloth feeding means for feeding a workpiece so that a needle drop position of the last needle and a needle drop position before the same point are the same point, A thread stitching means for manually cutting and cutting a thread above a workpiece after the sewing needle has risen from the needle drop of the last stitch.
始め近傍に形成される縫目であって、 第１の針落ち位置を通過して被縫製物の一面側で第２の
針落ち位置まで伸びるループ状の第１ループ部と、 第２の針落ち位置を通過する２本の第１通過糸部および
第２通過糸部と、 被縫製物の一面側で第２の針落ち位置から第３の針落ち
位置に伸びるループ状の第２ループ部とを備え、 前記第１通過糸部の一端側は被縫製物の他面側で前記第
１ループ部の一端側とつながり、 前記第２通過糸部の一端側は被縫製物の他面側で第３の
針落ち位置に伸び、 前記第２通過糸部の他端側は被縫製物の一面側で前記第
２ループ部の一端側につながり、 前記第１通過糸部の他端側は前記第１ループ部の内側を
一方向に通過した後、前記第２ループ部の両端をくく
り、その後、第１ループ部の内側を逆方向に通過して第
２ループ部の他端部につながっていることを特徴とする
縫目。6. A stitch formed in the vicinity of the start of single-thread ring stitching formed by one thread, wherein the stitch passes through a first needle drop position and has a second stitch on one surface side of an object to be sewn. A first loop portion extending to a needle drop position, two first passing thread portions and a second passing thread portion passing through the second needle drop position, and a second loop portion on one surface side of the sewing object. A second loop portion extending from the needle drop position to a third needle drop position, wherein one end of the first passing thread portion is connected to one end of the first loop portion on the other surface side of the sewing object. One end of the second passing thread portion extends to a third needle drop position on the other surface of the sewing object, and the other end of the second passing thread portion corresponds to the second surface of the sewing object on the second surface. The other end of the first passing thread portion passes through the inside of the first loop portion in one direction, and then connects to both ends of the second loop portion. Chestnut, then, a stitch, characterized in that connected to the other end portion of the second loop part through the inside of the first loop section in the opposite direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10298642A JP2000116971A (en) | 1998-10-20 | 1998-10-20 | Single thread loop sewing machine and seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10298642A JP2000116971A (en) | 1998-10-20 | 1998-10-20 | Single thread loop sewing machine and seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000116971A true JP2000116971A (en) | 2000-04-25 |
Family
ID=17862387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10298642A Pending JP2000116971A (en) | 1998-10-20 | 1998-10-20 | Single thread loop sewing machine and seam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000116971A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010057529A (en) * | 2008-09-01 | 2010-03-18 | Tawada:Kk | Thread cutting method for single chain stitch sewing machine and device therefor |
-
1998
- 1998-10-20 JP JP10298642A patent/JP2000116971A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010057529A (en) * | 2008-09-01 | 2010-03-18 | Tawada:Kk | Thread cutting method for single chain stitch sewing machine and device therefor |
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