JPH07102268B2 - sewing machine - Google Patents
sewing machineInfo
- Publication number
- JPH07102268B2 JPH07102268B2 JP1978885A JP1978885A JPH07102268B2 JP H07102268 B2 JPH07102268 B2 JP H07102268B2 JP 1978885 A JP1978885 A JP 1978885A JP 1978885 A JP1978885 A JP 1978885A JP H07102268 B2 JPH07102268 B2 JP H07102268B2
- Authority
- JP
- Japan
- Prior art keywords
- thread
- needle
- hole
- bed
- piece
- 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.)
- Expired - Fee Related
Links
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- Sewing Machines And Sewing (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は複数種の糸に刺繍縫
い、或は飾り縫いが、可能なミシンに関するものであ
る。Description: TECHNICAL FIELD The present invention relates to a sewing machine capable of embroidery sewing or decorative sewing on plural kinds of threads.
（従来の技術） 従来のミシンにあっては、縫い始めに
おける上糸の先端が布の下面に残る為、縫製を終えた布
にあってはその下面が非常に汚くなる問題点があった。
そこでその上糸における下端を予め短かく切断すること
も考えられているが、あまり短かくすると上昇した針の
針孔から上糸が抜けたり、下降した針に引かれて布から
上糸端が抜けたりする問題点を生じる。(Prior Art) In the conventional sewing machine, since the tip of the upper thread at the beginning of sewing remains on the lower surface of the cloth, there is a problem that the lower surface of the cloth that has been sewn becomes very dirty.
Therefore, it is also considered to cut the lower end of the upper thread short beforehand, but if it is made too short, the upper thread will fall out of the needle hole of the needle that has risen or the upper thread end will be pulled from the cloth by being pulled by the lowered needle. There is a problem of falling out.
（発明が解決しようとする問題点） この発明は上記従
来の問題点を除き、布の縫い始めの点において布から下
方へ垂れ下がっている上糸の糸端を切断することができ
て、しかも従来のような糸抜けが生じないように糸端を
捕捉することができ、縫製を終えた仕上品の下面を奇麗
な状態にすることができるようにしたミシンを提供しよ
うとするものである。(Problems to be Solved by the Invention) Except for the above-mentioned conventional problems, the present invention is capable of cutting the thread end of the upper thread hanging downward from the cloth at the start of sewing the cloth, and SUMMARY OF THE INVENTION An object of the present invention is to provide a sewing machine capable of catching a thread end so as to prevent the thread from slipping out, and making the lower surface of a finished product after sewing clean.
本願発明の構成は次の通りである。The configuration of the present invention is as follows.
（問題点を解決する為の手段） 本願発明のミシンは、
ベッドと、ベッドの上方に配設されたアームとを備え、
上記アームの自由端からベッドに向けては縫製用の針棒
を垂下させ、一方針棒に対向するベッド部には釜を備え
させ、上記針棒の上下動に対応させて釜を動作させるこ
とにより、針棒側の針を通して供給される上糸と釜から
供給される下糸とでもって布の縫製を行なうようにして
あると共に、上記ベッドにおける上記針の針落位置の側
方の下側に、ベッド上の布から下方へ垂れ下がる上糸を
切断するようにした上糸残り切断装置を備えさせている
ミシンにおいて、上記上糸残り切断装置は、ベッド下面
とは間隙を隔て、かつベッドに対して固定的に連結して
ある基板と、自体の一部に備える糸掛孔を上記針落ち位
置と基板上面位置との間を横移動自在に基板の上面に沿
わせて配置されている糸引片と、糸引片の糸掛孔が上記
基板上面位置にある状態で、糸引片における糸掛孔の孔
縁上面と重合する位置には上記糸掛孔の周縁との間で上
糸を挟持捕捉する為の押え片を配置し、さらに上記基板
における針落ち位置の側の上面端部には糸切部を備えさ
せ、上記押え片は、上記糸切部の位置よりも針落ち位置
に向って長く延して、縫製開始時には、上記針落ち位置
に上記糸掛孔を重合させて針を上記糸掛孔内に下降さ
せ、上記釜の剣先で糸端を引下げた後、針を上昇させて
上糸の糸端を糸掛孔内に垂下させ、その垂下状態にある
糸端を、上記針落ち位置にある糸引片の糸掛孔を基板上
面位置に移動させる過程で上記糸掛孔の孔縁で上糸を引
掛けて後退し、基板における上記糸切部と糸掛孔の孔縁
との間で上糸下端を切り離し、上記押え片と糸引片にお
ける糸掛孔の孔縁との間で上糸を挟持するようにしたも
のである。(Means for Solving Problems) The sewing machine of the present invention is
A bed and an arm arranged above the bed,
A needle bar for sewing is hung from the free end of the arm toward the bed, and a hook is provided at the bed portion facing the one stick, and the hook is operated corresponding to the vertical movement of the needle bar. By this, the cloth is sewn with the upper thread supplied through the needle on the needle bar side and the lower thread supplied from the hook, and the lower side lateral to the needle drop position of the needle in the bed. In a sewing machine equipped with an upper thread residual cutting device adapted to cut an upper thread that hangs downward from a cloth on the bed, the upper thread residual cutting device separates the bed lower surface from the lower surface of the bed. A threading hole in which a board fixedly connected to the board and a thread hooking hole provided in a part of itself are arranged along the upper surface of the board so as to be laterally movable between the needle drop position and the top surface position of the board. And the thread hooking hole of the thread pulling piece are located at the position above the substrate. In this state, at the position where it overlaps with the hole edge upper surface of the thread hooking hole in the thread pulling piece, a pressing piece for pinching and capturing the upper thread between the periphery of the thread hooking hole is arranged, and further the needle drop position on the substrate. A thread cutting portion is provided at the upper end portion on the side of, and the pressing piece extends longer toward the needle drop position than the position of the thread cutting portion, and at the start of sewing, the thread dropping position is set at the needle drop position. After overlapping the hooking holes to lower the needle into the thread hooking hole and pulling down the thread end with the tip of the hook of the hook, raise the needle to hang the thread end of the upper thread into the thread hooking hole In the process of moving the thread end in the state from the thread hooking hole of the thread pulling piece at the needle drop position to the upper surface of the board, the upper thread is hooked at the hole edge of the thread hooking hole to retreat, and the thread cutting on the board is performed. The lower end of the upper thread is separated between the portion and the hole edge of the thread hooking hole, and the upper thread is clamped between the pressing piece and the hole edge of the thread hooking hole in the thread pulling piece. In which was to so that.
（作用） 針の上下動及び釜の作動により針を通して供
給される上糸と釜から供給される下糸とにより縫製が行
われる。又縫製の初期の時点において上糸残り切断装置
が作動し、布から下方へ垂れ下がる上糸を切断し、同時
にその切断した後の上糸端を捕捉する。(Operation) When the needle moves up and down and the hook operates, sewing is performed by the upper thread supplied through the needle and the lower thread supplied from the hook. Further, at the initial stage of sewing, the needle thread residual cutting device is activated to cut the upper thread hanging downward from the cloth, and at the same time, to catch the upper thread end after the cutting.
（実施例） 以下本願の実施例を図面について説明す
る。第１図乃至第８図において、符号１〜20は周知の多
軸ミシン（例えば特開昭47−22255号公報に示されたも
のと同様のもの）の構成部材を示すもので、１はベッ
ド、２は針板、2aは針挿通用の透孔、３は釜駆動用の
軸、４は釜、５は針板２の下側に備えられた周知の上糸
切断装置、７はベッド１の上方に配設されたアーム、８
は駆動軸、９はアーム７に対し上下動自在の作動棒、10
はクランク機構、11は針棒押え、12はアーム７に水平回
動自在に取付けられた保持体、13は保持体12に対し上下
動自在に備えさせた針棒、14は針、15は針棒13に対し上
下動自在の押え体、16はその布押え部、17第１ばね、18
は第１ばね17よりも強い第２ばね、20は天秤を夫々示
す。21は周知の上糸で複数の針14,14・・・に対し夫々
異なる色のものが用いてある。(Examples) Examples of the present application will be described below with reference to the drawings. 1 to 8, reference numerals 1 to 20 indicate constituent members of a well-known multi-axis sewing machine (for example, the same as that shown in Japanese Patent Laid-Open No. 47-22255), and 1 is a bed. 2 is a needle plate, 2a is a through hole for inserting a needle, 3 is a shaft for driving a shuttle, 4 is a shuttle, 5 is a well-known needle thread cutting device provided below the needle plate 2, and 7 is a bed 1. An arm disposed above the
Is a drive shaft, 9 is an actuating rod that can move up and down with respect to the arm 7, 10
Is a crank mechanism, 11 is a needle bar retainer, 12 is a holder mounted on the arm 7 so as to be horizontally rotatable, 13 is a needle bar that is vertically movable with respect to the holder 12, 14 is a needle, and 15 is a needle. A pressing body that can move up and down with respect to the rod 13, 16 is a cloth pressing portion, 17 a first spring, 18
Is a second spring that is stronger than the first spring 17, and 20 is a balance. Numeral 21 is a well-known needle thread having different colors for a plurality of needles 14, 14, ...
上記構成の多軸ミシンは図示外の駆動装置（主モータ）
が作動することによって軸3,8が同期して回動する。そ
して軸３の回動により釜４が回動し、軸８の回動により
作動棒９が上下動しかつ天秤20が上下動を行なう（釜４
の２回転の間に作動棒９及び天秤20は１回上下動す
る）。又上記とは異なる駆動装置によって保持体12が回
動され、多数の針棒13のうち一つが選択的に針棒押え11
の下側に位置させられる。その結果その針棒13が、作動
棒９と共に上下動する針棒押え11によって上下動させら
れ、その針棒13に取り付いた針14及び上記釜４によっ
て、布22に対し上糸21と下糸による周知の本縫の縫製が
行なわれる。The multi-axis sewing machine configured as described above is a drive device (main motor) not shown.
Is operated, the shafts 3 and 8 rotate in synchronization. The rotation of the shaft 3 rotates the shuttle 4, the rotation of the shaft 8 causes the operating rod 9 to move up and down and the balance 20 to move up and down (the shuttle 4
The operating rod 9 and the balance 20 move up and down once during the two rotations of. The holder 12 is rotated by a driving device different from the above, and one of the many needle bars 13 is selectively pressed by the needle bar retainer 11
Located underneath. As a result, the needle bar 13 is moved up and down by the needle bar presser 11 that moves up and down together with the actuating bar 9, and the needle 14 attached to the needle bar 13 and the shuttle 4 cause the needle thread 21 and the bobbin thread on the cloth 22. The well-known lock stitch is sewn.
次に25は針板２の下側に備えられた上糸残り切断装置を
示す。この装置25は前記周知の上糸切断装置５とは相互
干渉のない位置に設けてある。上記切断装置25におい
て、26は基板、28は案内枠で、何れも針板２に固定して
ある。27は基板26の縁部に設けられた糸切部を示す。29
は糸引片で、案内枠28に沿って基板26の上を横移動する
ようになっている。30は糸引片29の一部に設けられた糸
掛孔で、その孔縁には糸切部31（刃物）が設けられてい
る。32は上糸の捕捉面で、糸引片29の先端部の上面をも
って構成してある。33は押え片で、ばね板をもって構成
してあり、その元部33aは基板26に取り付けてある。該
押え片33における先端部は糸引片29を第４図おいて下方
へ向けて押え付けており、この押え片33の先端部と前記
捕捉面32とでもって上糸の捕捉部が形成されている。34
は案内枠に設けた長孔状の案内孔、35は糸引片29に取付
けた連動片で、案内孔34内を進退移動する。36を駆動体
として例示するロータリーソレノイドで、その操作腕37
は上記連動片35と連繋させてある。Next, 25 indicates a needle thread residual cutting device provided on the lower side of the needle plate 2. This device 25 is provided at a position where it does not interfere with the known needle thread cutting device 5. In the cutting device 25, 26 is a substrate and 28 is a guide frame, both of which are fixed to the needle plate 2. Reference numeral 27 denotes a thread cutting portion provided on the edge portion of the substrate 26. 29
Is a thread-pulling piece that moves laterally on the substrate 26 along the guide frame 28. A thread hooking hole 30 is provided in a part of the thread pulling piece 29, and a thread cutting portion 31 (cutting tool) is provided at the edge of the thread. The upper thread catching surface 32 is constituted by the upper surface of the tip of the thread pulling piece 29. A pressing piece 33 is composed of a spring plate, and its base 33a is attached to the substrate 26. The tip of the pressing piece 33 presses the thread pulling piece 29 downward in FIG. 4, and the tip of the pressing piece 33 and the catching surface 32 form an upper thread catching portion. There is. 34
Is a long hole-shaped guide hole provided in the guide frame, and 35 is an interlocking piece attached to the stringing piece 29, which moves forward and backward in the guide hole 34. A rotary solenoid whose 36 is an example of a driving body, and its operating arm 37
Is connected to the interlocking piece 35.
上記のような構成の上糸残り切断装置25にあっては、ロ
ータリーソレノイド36の作動により糸引片29が第３図及
び第４図に示される位置と、該糸引片29に設けた糸掛孔
30が針板２の透孔2aと重合する位置との間を往復動す
る。In the needle thread residual cutting device 25 having the above-mentioned configuration, the thread pulling piece 29 is moved to the position shown in FIGS. 3 and 4 by the operation of the rotary solenoid 36, and the thread hooking hole provided in the thread pulling piece 29.
30 reciprocates between the through hole 2a of the needle plate 2 and a position where it overlaps.
次に41は糸保持装置を示す。これは特開昭60−173156号
公報に示されたものと同様のものである。図において、
42は保持枠、43は保持枠42に形成されたスリットで、そ
の上面及び下面には糸止体が付設してある。44は進退片
で、ロータリーソレノイド45によって矢印方向に進退す
るようにしてあり、又先部には糸引掛片46が取付けてあ
る。Next, 41 shows a yarn holding device. This is the same as that disclosed in JP-A-60-173156. In the figure,
42 is a holding frame, 43 is a slit formed in the holding frame 42, and thread stoppers are attached to the upper and lower surfaces thereof. Reference numeral 44 is an advancing / retreating piece, which is moved forward / backward in the arrow direction by a rotary solenoid 45, and a thread hooking piece 46 is attached to the tip portion.
この様な構成の糸保持機構41にあっては、作動棒９及び
針棒13が上昇位置にある時に進退片44が矢印方向に往復
動することにより、糸引掛片46がスリット43を通って第
２図に示される様な位置まで突出し、引掛片46が針14が
垂れ下がる上糸21を引掛け、次に引掛片46がスリット43
から抜け出る位置まで戻る。これにより上糸21は第２図
に示される如くスリット43の内部に引き込まれ、糸止体
によってその状態に保持される。In the thread holding mechanism 41 having such a configuration, when the operating rod 9 and the needle bar 13 are in the raised position, the advancing / retreating piece 44 reciprocates in the arrow direction, so that the thread catching piece 46 passes through the slit 43. The hook piece 46 projects to a position as shown in FIG. 2, the hook 14 hooks the upper thread 21 on which the needle 14 hangs, and then the hook piece 46 slits 43.
Return to the position where you can get out of. As a result, the needle thread 21 is drawn into the slit 43 as shown in FIG. 2 and held in that state by the thread stopper.
上記構成の多軸ミシンにおいては、一つの色の糸による
縫製が終わった場合、針棒13が上昇した状態において上
糸切断装置５が作動して上糸21を切断すると共に、糸保
持装置41が作動して上記切断された上糸21を第２図に示
す如く保持枠42のスリット43内に引き込む。In the multi-axis sewing machine having the above-mentioned configuration, when the sewing with the thread of one color is finished, the needle thread cutting device 5 operates to cut the upper thread 21 while the needle bar 13 is raised, and the thread holding device 41 Is operated to draw the cut upper thread 21 into the slit 43 of the holding frame 42 as shown in FIG.
次に再び縫製を開始する場合の動作を第７図及び第８
（Ａ）図〜第８（Ｈ）図を参照して詳しく説明する。尚
第８（Ａ）〜第８（Ｈ）図は第７図において（Ａ）〜
（Ｈ）で示される時点での天秤20、針14、上糸21、布2
2、釜４、上糸残り切断装置25の関係を夫々示すもので
ある。又これらの図において一点鎖線よりも下側の図は
要部を拡大した図である。先ず主モータの作動の開始と
相前後して、第８（Ａ）図〜第８（Ｂ）図に示される如
く、糸引片29が突出して透孔2aと糸掛孔30とが重合す
る。その後針14が下降し、例えば（Ｃ）の時点では第８
（Ｃ）図の状態となる。その後針14の下降及び上昇と釜
４の回動が続くことにより、周知の如く釜４の剣先4aが
上糸21を引っ掛ける為、（Ｄ）の時点では第８（Ｄ）図
に示される如く上糸21は透孔2a及び糸掛孔30を通って下
方へ垂れ下がった状態となる。次に（Ｅ）の時点におい
て第８（Ｅ）図の如く糸引片29の後退により、上糸21に
おける下方へ垂れ下がった部分21aは基板26と糸引片29
の夫々の糸切部27,31で切断され、上糸21の残りの部分
の下端が捕捉面32と押え片33との間に挟み付けられてそ
こに捕捉される。そしてその直後の時点（Ｆ）において
は第８（Ｆ）図に示される如き状態となる。その後再び
針14が下降すると、（Ｇ）の時点において第８（Ｇ）図
に示される如く、布22における次の針目の位置に形成さ
れた上糸21のループに釜４の剣先4aが引っ掛かる。その
後釜４の回動により、剣先4aに引っ掛かっている上糸21
と釜４から繰り出される下糸との周知の如き絡みが達成
される。その後は周知の如く針14の上下動及び釜４の回
動が繰り返されると共に布22が矢印48方向へ送られて、
周知の如き縫製が行われる。そしてそのように布22が矢
印48方向へ送られる過程で、捕捉部に捕捉されていた上
糸21の先端は、第８（Ｈ）図に示される如く捕捉面32と
押え片33との間から抜け出る。この場合、上記捕捉部は
透孔2aに極めて近い位置に設けられている為、布22の下
には上糸21の先端が極めて短い寸法しか残らない状態
（実質的に上糸の残りが無い状態）となっている。Next, the operation when sewing is restarted is shown in FIGS.
This will be described in detail with reference to FIGS. 8 (A) to 8 (H) are shown in FIG. 7 (A) to
Balance 20, needle 14, needle 21, cloth 2 at the time indicated by (H)
2, the hook 4, and the needle thread residual cutting device 25 are shown respectively. Further, in these drawings, the drawings below the alternate long and short dash line are enlarged views of the main parts. Before and after the start of the operation of the main motor, as shown in FIGS. 8 (A) to 8 (B), the thread pulling piece 29 projects and the through hole 2a and the thread hooking hole 30 are superposed. After that, the needle 14 descends, and, for example, at the time of (C), the eighth
The state shown in FIG. Thereafter, as the needle 14 descends and rises and the shuttle 4 continues to rotate, the sword tip 4a of the shuttle 4 hooks the upper thread 21 as is well known. Therefore, at the time of (D), as shown in FIG. 8 (D). The upper thread 21 hangs downward through the through hole 2a and the thread hooking hole 30. Next, at the time of (E), as shown in FIG. 8 (E), the part 21a of the needle thread 21 which hangs downward due to the retreat of the thread pulling piece 29 has the substrate 26 and the thread pulling piece 29.
Are cut by the respective thread cutting portions 27 and 31, and the lower end of the remaining portion of the upper thread 21 is sandwiched between the capturing surface 32 and the pressing piece 33 and captured there. Immediately after that, the state becomes as shown in FIG. 8 (F). Thereafter, when the needle 14 descends again, as shown in FIG. 8 (G) at the time of (G), the blade point 4a of the shuttle 4 is caught by the loop of the upper thread 21 formed at the position of the next stitch of the cloth 22. . After that, the upper thread 21 caught on the sword tip 4a is caused by the rotation of the hook 4.
The well-known entanglement between the bobbin thread and the bobbin thread fed from the shuttle 4 is achieved. After that, as is well known, the vertical movement of the needle 14 and the rotation of the shuttle 4 are repeated and the cloth 22 is fed in the direction of the arrow 48,
Well-known sewing is performed. Then, in the process in which the cloth 22 is fed in the direction of the arrow 48 in this way, the tip of the upper thread 21 caught in the catching portion is located between the catching surface 32 and the pressing piece 33 as shown in FIG. 8 (H). Get out of. In this case, since the capturing portion is provided at a position extremely close to the through hole 2a, a state in which the tip of the upper thread 21 remains below the cloth 22 for an extremely short length (substantially no remaining upper thread exists) State).
尚上記糸切部27,31による上糸21の切断は、針14が糸掛
孔30から上方へ抜け出ている時点であれば何時の時点行
っても良い。The needle thread 21 may be cut by the thread cutting portions 27 and 31 at any time as long as the needle 14 is pulled out upward from the thread hooking hole 30.
又上糸残り切断装置25は針板２の上側に配設すると共
に、その上糸残り切断装置25の上側を布の移動に支障を
きたさないようカバーで覆ってもよい。次に第９図は糸
掛孔の形状の異なる例を示すもので、前記の如き周囲を
孔縁によって全て取り囲まれた透孔の形でなく、側方の
一部に溝50を備える切込部の形状に形成した例を示すも
のである。Further, the upper thread residual cutting device 25 may be disposed on the upper side of the needle plate 2, and the upper side of the upper thread residual cutting device 25 may be covered with a cover so as not to hinder the movement of the cloth. Next, FIG. 9 shows an example in which the thread hooking hole has a different shape. It is not the shape of the through hole which is entirely surrounded by the hole edge as described above, but a notch having a groove 50 at a part of the side. It shows an example formed in the shape of a part.
なお、機能上前図のものと同一又は均等構成と考えられ
る部分には、前図と同一の符号にアルファベットのｅを
付して重複する説明を省略した。In addition, parts that are considered to be the same or equivalent in configuration to those in the previous figure in terms of function are denoted by the same reference numerals as those in the previous figure with the letter e added to omit redundant description.
（また次図以降のものにおいても順次同様の考えでアル
ファベットのf,g,hを順に付して重複する説明を省略す
る。） 次に第10図、第11図は更に異なる実施例を示すもので、
糸引片29fの下面において糸掛孔30fの孔縁の一部に逃げ
凹部51を設け、その逃げ凹部51の縁部に糸切部31fを設
けることにより、糸切部31fを糸掛孔30fの孔縁から離し
た例を示すものである。(Also, in the following figures and the like, the alphabetical letters f, g, and h are sequentially added to omit the overlapping description in the same way.) Next, FIGS. 10 and 11 show still another embodiment. Things
The escape recess 51 is provided at a part of the hole edge of the thread hooking hole 30f on the lower surface of the thread pulling piece 29f, and the thread cutting portion 31f is provided at the edge of the escape recess 51, so that the thread cutting portion 31f is provided in the thread hooking hole 30f. It shows an example separated from the hole edge.
このような構造のものにあっては、前記第７図における
（Ｃ）〜（Ｄ）の時点の間において、上糸が何等かの都
合で上下に引き張られてそれが糸掛孔30fの孔縁に触れ
ても、上糸が誤って糸切部により切断されてしまうこと
を防止することができる。次に第12図及び第13図は更に
異なる実施例を示すもので、前記第９図乃至第11図に示
された構造を組み合わせた例を示すものである。In the case of such a structure, the upper thread is pulled up and down for some reason between the time points (C) to (D) in FIG. Even if it touches the hole edge, it is possible to prevent the upper thread from being accidentally cut by the thread cutting portion. Next, FIGS. 12 and 13 show still another embodiment, which is an example in which the structures shown in FIGS. 9 to 11 are combined.
次に第14図乃至第16図は上糸残り切断装置の構造の異な
る例を示すものである。この切断装置においては、糸引
片29hは枢軸53をもって枢着されており、その枢軸53の
位置を中心に円弧を描いて往復作動するよう構成してあ
る。Next, FIGS. 14 to 16 show different examples of the structure of the needle thread residual cutting device. In this cutting device, the thread pulling piece 29h is pivotally mounted on a pivot shaft 53, and is configured to reciprocate in an arc about the position of the pivot shaft 53.
このような構造のものにおいても、前記第１の実施例に
示されたものと同様に上糸の切断及び捕捉を行うことが
できる。Even with such a structure, the upper thread can be cut and captured as in the case of the first embodiment.
（発明の効果） 以上のように本発明にあっては、針14
の上下動により布22に対し縫製を行うことのできる特長
がある。(Effects of the Invention) As described above, according to the present invention, the needle 14
The feature is that the cloth 22 can be sewn by moving the cloth up and down.
しかもその縫製時においては、布における縫い始めの点
において下方へ垂れ下がる上糸を上糸残り切断装置25に
よって切断することができ、縫い上がった布22の下面を
奇麗なものにすることのできる特長がある。Moreover, at the time of sewing, the upper thread that hangs downward at the sewing start point of the cloth can be cut by the upper thread residual cutting device 25, and the lower surface of the sewn cloth 22 can be made beautiful. There is.
その上本願発明にあっては、針落ち位置2aにて糸引片29
の糸掛孔30の孔縁で上糸21を引掛け、その糸掛孔30を基
板26の上面位置移動させる過程で基板26の糸切部27と糸
掛孔30の孔縁との間で上糸21下端を切り離し、上記押え
片33と糸引片29における上糸捕捉面32との間で上糸21を
挟持するようにしてあるので、上糸21を針落ち位置2aの
近くで極めて短かく切断しても、残りの上糸21の端部は
押え片33に接して捕捉されており、針14の上昇、下降時
に不用意に上糸下端が針孔から抜けたり、布から抜けた
りする事故を未然に防止できる画期的効果がある。In addition, in the present invention, the thread pulling piece 29 at the needle drop position 2a.
In the process of hooking the upper thread 21 at the hole edge of the thread hooking hole 30 and moving the thread hooking hole 30 to the upper surface position of the board 26, between the thread cutting portion 27 of the board 26 and the hole edge of the thread hooking hole 30. Since the lower end of the upper thread 21 is separated and the upper thread 21 is sandwiched between the pressing piece 33 and the upper thread catching surface 32 of the thread pulling piece 29, the upper thread 21 is extremely short near the needle drop position 2a. Even after cutting, the end of the remaining upper thread 21 is caught in contact with the presser piece 33, and the lower end of the upper thread is inadvertently pulled out of the needle hole or the cloth when the needle 14 is raised or lowered. There is an epoch-making effect that can prevent the accident that occurs.
図面は本願の実施例を示すもので、第１図は多軸ミシン
の正面図、第２図は縦断面部分図、第３図は上糸残り切
断装置の平面図、第４図はIV−IV線断面図、第５図は糸
引片の部分平面図、第６図はVI−VI線断面図、第７図は
動作タイミングを示すタイムチャート、第８（Ａ）図〜
第８（Ｈ）図は第７図の（Ａ）〜（Ｈ）で示される時点
の状態を示す作動説明図で、第９図、第10図、第12図は
糸引片先端部の構造の夫々異なる例を示す平面図、第11
図はXI−XI線断面図、第13図はXIII−XIII線断面図、第
14図は上糸残り切断装置の構造の異なる例を示す平面
図、第15図はXV−XV線断面図、第16図はXVI−XVI線断面
図。 １……ベッド、７……アーム、13……針棒、14……針、
４……釜、21……上糸、25……上糸残り切断装置。The drawings show an embodiment of the present application. Fig. 1 is a front view of a multi-axis sewing machine, Fig. 2 is a partial longitudinal sectional view, Fig. 3 is a plan view of a needle thread residual cutting device, and Fig. 4 is IV-. IV line sectional view, FIG. 5 is a partial plan view of the thread pulling piece, FIG. 6 is a VI-VI line sectional view, FIG. 7 is a time chart showing operation timing, FIG.
FIG. 8 (H) is an operation explanatory view showing the state at the time point shown in FIGS. 7 (A) to (H), and FIGS. 9, 10 and 12 show the structure of the tip portion of the stringing piece. 11 is a plan view showing different examples,
Figure is a sectional view taken along line XI-XI, Figure 13 is a sectional view taken along line XIII-XIII,
14 is a plan view showing a different example of the structure of the needle thread residual cutting device, FIG. 15 is a sectional view taken along line XV-XV, and FIG. 16 is a sectional view taken along line XVI-XVI. 1 ... bed, 7 ... arm, 13 ... needle bar, 14 ... needle,
4 ... shuttle, 21 ... upper thread, 25 ... upper thread residual cutting device.
Claims (1)
ムとを備え、上記アームの自由端からベッドに向けては
縫製用の針棒を垂下させ、一方針棒を対向するベッド部
には釜を備えさせ、上記針棒の上下動に対応させて釜を
動作させることにより、針棒側の針を通して供給される
上糸と釜から供給される下糸とでもって布の縫製を行な
うようにしてあると共に、上記ベッドにおける上記針の
針落位置の側方の下側に、ベッド上の布から下方へ垂れ
下がる上糸を切断するようにした上糸残り切断装置をを
備えさせているミシンにおいて、上記上糸残り切断装置
は、ベッド下面とは間隙を隔て、かつベッドに対して固
定的に連結してある基板と、自体の一部に備える糸掛孔
を上記針落ち位置と基板上面位置との間を横移動自在に
基板の上面に沿わせて配置されている糸引片と、糸引片
の糸掛孔が上記基板上面位置にある状態で、糸引片にお
ける糸掛孔の孔縁上面と重合する位置には上記糸掛孔の
周縁との間で上糸を挟持捕捉する為の押え片を配置し、
さらに上記基板における針落ち位置の側の上面縁部には
糸切部を備えさせ、上記押え片は、上記糸切部の位置よ
りも針落ち位置に向って長く延して、縫製開始時には、
上記針落ち位置に上記糸掛孔を重合させて針を上記糸掛
孔内に下降させ、上記釜の剣先で糸端を引下げた後、針
を上昇させて上糸の糸端を糸掛孔内に垂下させ、その垂
下状態にある糸端を、上記針落ち位置にある糸引片の糸
掛孔を基板上面位置に移動させる過程で上記糸掛孔の孔
縁で上糸を引掛けて後退し、基板における上記糸切部と
糸掛孔の孔縁との間で上糸下端を切り離し、上記押え片
と糸引片における糸掛孔の孔縁との間で上糸を挟持する
ようにしてあることを特徴とするミシン。1. A bed comprising a bed and an arm arranged above the bed. A needle bar for sewing is hung from the free end of the arm toward the bed, and one policy bar is provided on the opposite bed section. Is equipped with a hook, and by operating the hook in response to the vertical movement of the needle bar, sewing of cloth is performed with the upper thread supplied through the needle on the needle bar side and the lower thread supplied from the hook. In addition, a needle thread residual cutting device for cutting the upper thread hanging downward from the cloth on the bed is provided below the side of the needle drop position of the bed. In the sewing machine, the needle thread residual cutting device includes a substrate that is fixedly connected to the bed and is spaced apart from the lower surface of the bed, and a thread hooking hole that is provided in a part of the substrate and the needle drop position and the substrate. Align the top surface of the board so that it can move laterally between the top surface position. Between the thread-pulling piece that is arranged in a line and the peripheral edge of the thread-placing hole at a position where the thread-placing piece overlaps with the hole edge upper surface of the thread-pulling piece in the thread-pulling piece in a state where the thread-placing hole of the thread-pulling piece is at the upper surface position of the substrate. Arrange a holding piece to pinch and capture the upper thread with,
Further, a thread cutting portion is provided on the upper surface edge portion on the side of the needle drop position in the substrate, the pressing piece extends longer toward the needle drop position than the position of the thread cutting portion, and at the start of sewing,
The thread hooking hole is overlapped at the needle drop position to lower the needle into the thread hooking hole, and the needle end of the hook is pulled down, and then the needle is raised to move the needle thread end of the needle thread into the thread hooking hole. In the process of moving the thread end in the hanging state to the upper surface of the board of the thread catching piece at the needle drop position, and hooking the upper thread at the hole edge of the thread catching hole to retreat. Then, the lower end of the upper thread is separated between the thread cutting portion of the substrate and the hole edge of the thread hooking hole, and the upper thread is clamped between the pressing piece and the hole edge of the thread hooking hole of the thread pulling piece. A sewing machine characterized by being present.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978885A JPH07102268B2 (en) | 1985-02-04 | 1985-02-04 | sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978885A JPH07102268B2 (en) | 1985-02-04 | 1985-02-04 | sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61179191A JPS61179191A (en) | 1986-08-11 |
| JPH07102268B2 true JPH07102268B2 (en) | 1995-11-08 |
Family
ID=12009074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978885A Expired - Fee Related JPH07102268B2 (en) | 1985-02-04 | 1985-02-04 | sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07102268B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4884752B2 (en) * | 2005-11-21 | 2012-02-29 | 三菱重工業株式会社 | Deck crane hydraulic drive |
| JP5348856B2 (en) * | 2007-05-31 | 2013-11-20 | 株式会社バルダン | Rotary multi-needle sewing machine |
| CN111979652A (en) * | 2019-05-24 | 2020-11-24 | Juki株式会社 | Sewing machine for sewing decoration |
-
1985
- 1985-02-04 JP JP1978885A patent/JPH07102268B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61179191A (en) | 1986-08-11 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |