JPS5846988A - Upper yarn cutting apparatus of sewing machine - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明はサイクルミシンにおいて、布を縫製した後、布
から針に連なる上糸を糸引出し装置で必要な長さ引出す
と同時に針位置よシ離れた後退位置から糸切シハサミを
針下力の布上面に近接した位置に前進させることによシ
同時に上糸を切断するようにしたことを特徴とするミシ
ンの上ふ切シ装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION In a cycle sewing machine, after sewing a cloth, a thread pulling device pulls out the needle thread from the cloth to the needle to a required length, and at the same time, the thread is cut from a retracted position that is away from the needle position. This invention relates to a top cutting device for a sewing machine, characterized in that the needle thread is simultaneously cut by advancing the scissors to a position close to the upper surface of the fabric under the needle.

従来、サイクルミシンにおいて布を縫製した後（特公昭
５ｌ−４７１０９）が存在するが、この上糸切り装置は
ミシンベット上に縦長に設けられた布押え用の送シ腕に
沿ってほぼ水平に平行配置された糸切軸を操作レバーに
よシ操作可能なカム体に係合させたコロ、及びレバーを
介して回転、及び前後動させることにより、その先端部
からミシン針の側方の後退位置に臨ませた糸切りハサミ
をミシン針下方に前進させて上糸を切断するもめであっ
た。すなわち、この従来の上糸切シ装置はカム体の動き
を糸切軸に伝えるためのコロ、及びレバー等を含む伝導
手段が必要であシ、従って装置自体の構造が複雑となり
、又切シ終った上糸の先端を糸切りハサミで保持し、次
の縫製が始まり２〜８針以上縫った後糸の保持を解除す
る必要があシそのためｉい始めの上糸端が布上面よシ５
〜６ＭＮ以上も出てしまう等の欠点があった。Conventionally, there is a device for sewing cloth in a cycle sewing machine (Japanese Patent Publication No. 5L-47109), but this needle thread trimming device is installed almost horizontally along the feeding arm for the presser foot, which is installed vertically on the sewing machine bed. By rotating and moving back and forth through a roller and lever that engages a cam body that can operate a thread cutting shaft arranged in parallel with a control lever, the sewing machine needle is laterally retracted from its tip. There was a struggle to cut the upper thread by moving the thread trimming scissors towards the position below the sewing machine needle. That is, this conventional needle thread trimming device requires a transmission means including rollers and levers for transmitting the movement of the cam body to the thread trimming shaft, and therefore the structure of the device itself is complicated and the cutting mechanism is complicated. It is necessary to hold the tip of the finished upper thread with thread trimmers and release the holding of the thread after 2 to 8 stitches have been sewn before the next sewing starts.Therefore, the upper thread end of the needle thread at the beginning of the thread should be placed above the top of the fabric. 5
There was a drawback that more than 6 MN was produced.

本発明は上述の欠点を解消したもので、縫い終グーのピ
ストンロッド先端を利用して設けた糸切シへサミを引出
した糸の部分まで進めることによシ同時に糸を切断する
ことができるようにした構造の簡単な上糸切シ装置を提
供するものである。The present invention solves the above-mentioned drawbacks, and the thread can be cut at the same time by advancing the scissors to the thread cutter provided using the tip of the piston rod of the end-of-sewing gun to the pulled-out thread part. To provide a needle thread trimming device having a simple structure as described above.

以下、本発明の一実施例を図面に基づき説明する。Hereinafter, one embodiment of the present invention will be described based on the drawings.

本説明に用いるミシンは、第１．２図に示すようにミシ
ン■の上軸に連動して針棒■下端の針株■の前後端に固
定された２本の針■■が上下動すると共に、この２本の
針■■にそれぞれ別個に対応して針板■下面に設けられ
た２ケの水平釜■■が下軸を介して水平方向に協動回転
することによシ２ケ所の縫合を同時に行う縫合部と、前
記上軸は連動して減速回転する重送シカムによシ、コロ
、レバー、リンク等を介してベット■上面を前後左右に
直線的（Ｃ水平移動可能な布送り台［相］と、この重送
シ台［相］にそれぞれ独立して軸支０され、先端に前記
２本の針■■に対応してその下方に配置された布押え金
［相］［相］を備え、その押え金０［相］上面に形成さ
れた属人［相］■にアーム■の前方と側方にそれぞれ直
立状に配置された押え棒０［相］の下端を挿入すると共
に、この両者間に引きバネ［相］［相］を掛は渡して圧
接連結し、この押え棒［相］■の上端を前記アーム■の
上面に固定の支持台００にそれぞれ独立して自動調芯的
に軸支［相］［相］された垂下シリンダー＠）［相］の
ピストンロッド＠［相］の先端に固定することによシ前
記軸■を中心に２個の布押え金［相］［相］をそれぞれ
独立して上下動筒ｉに構成した一対の押え腕０＠とを備
えた布保持部を有し、この布保持部を前記一定位置で上
下動する２本の針■■の縫合部に対し、前後左右に直線
的に往復動させることによシ布の２ケ所に第７図に示す
ような同じ縫い目［株］■（閂ヌキ止砕い）を同時に形
成するようにした水平釜式の二木針閂ヌキ止パンドルー
プ縫付は専用ミシンである。In the sewing machine used in this explanation, as shown in Figure 1.2, two needles fixed to the front and rear ends of the needle bar ■ needle stock ■ at the lower end move up and down in conjunction with the upper shaft of the sewing machine ■. At the same time, two horizontal hooks ■■ provided on the lower surface of the throat plate ■ corresponding to these two needles separately rotate together in the horizontal direction via the lower shaft, so that the two needles The suture section that simultaneously performs the suturing of The cloth feed table [phase] and this multi-feed table [phase] are each independently pivoted, and a cloth presser foot [phase] is placed at the tip corresponding to the two needles ■■ and located below it. ][phase], and attach the lower end of the presser bar 0[phase], which is arranged upright on the front and side of the arm ■, to the subordinate [phase]■ formed on the upper surface of the presser foot 0[phase]. At the same time, a tension spring [phase] [phase] is passed between the two to connect them by pressure contact, and the upper end of this presser rod [phase] ■ is independently attached to the support base 00 fixed to the upper surface of the arm ■. By fixing it to the tip of the piston rod @[phase] of the hanging cylinder that is self-aligningly supported by the shaft, two presser feet can be attached around the shaft ■. It has a cloth holding part equipped with a pair of presser arms 0@ each having gold [phase] [phase] independently formed into a vertically movable cylinder i, and two arms that move this cloth holding part up and down at the above-mentioned fixed position. By reciprocating the needle ■■ linearly from front to back and left and right to the suture part, the same seam [stock] ■ (barlock closure) as shown in Figure 7 is simultaneously formed in two places on the fabric. A specialized sewing machine is used to sew horizontal hook-type double-needle bar-lock pand loops.

本発明は前記ミシン■の支持台００端部にコ字状の軸受
０［相］をアーム■側部に沿って直立状に設け、この軸
受［相］＠にスライド軸０［相］を垂直に設ける。そし
て、この軸［相］［相］の中央部にはブロック状の移動
体［相］［相］を固定し、この移動体［相］［相］の側
面に案内片＠［相］を固定し、その固定された案内片■
０を・前記軸受［相］［相］の上側面に固定の直立板［
相］［相］の下半部に前記スライド軸［相］［相］に沿
って平行に形成された長溝＠［相］内に上下摺動可能に
挿入して、スライド軸＠［相］の回シ止め作用をさせて
いる。In the present invention, a U-shaped bearing 0 [phase] is provided at the end of the support base 00 of the sewing machine ■ in an upright manner along the side of the arm ■, and a slide shaft 0 [phase] is perpendicular to this bearing [phase] @. Provided for. Then, a block-shaped moving body [phase] [phase] is fixed to the center of this shaft [phase] [phase], and a guide piece @[phase] is fixed to the side of this moving body [phase] [phase] And its fixed guide piece■
0 - Upright plate fixed to the upper surface of the bearing [phase] [phase]
[phase] [phase] is inserted into the long groove @[phase] formed parallel to the slide shaft [phase] in the lower half of the slide shaft @[phase] so as to be vertically slidable. It acts as a stopper.

又、この２飼の移動体［相］［相］のうち前方の移動体
［相］には、その前面に設けられた連結板［相］に、ま
た、後方の移動体［相］には、その後面部［株］にそれ
ぞれ前後方向の水平穴［相］［相］が設けられ、この水
平穴［相］［相］には両端を鉤状に曲げた連結金［相］
［相］の下端の水平軸部［相］［有］が回転摺動自在に
挿入され、この連結金［相］［相］の上端の水平軸部［
相］［相］は前記押え棒［相］［相］の上部に前記移動
体［相］［相］の水平穴［相］［相］と平行に貫通形成
された水平穴［株］［株］に回転摺動自在に挿入されて
おシ、これによシ２ヶの移動体［相］［相］は前記押え
棒［相］［相］の上下方部の移動に連動し七それぞれが
独立して上下移動し得るようになっている。Also, among these two moving bodies [phase], the front moving body [phase] has a connecting plate [phase] provided on its front, and the rear moving body [phase] has a connecting plate [phase]. , horizontal holes [phase] [phase] are provided in the front and rear directions, respectively, and a connecting metal [phase] with both ends bent into a hook shape is provided in the horizontal hole [phase] [phase].
The horizontal shaft part [phase] [with] at the lower end of [phase] is rotatably and slidably inserted, and the horizontal shaft part [with] the upper end of this coupling [phase] [phase]
[phase] [phase] is a horizontal hole [stock] [stock] formed in the upper part of the presser bar [phase] [phase] in parallel with the horizontal hole [phase] [phase] of the moving body [phase] [phase]. ], so that the two moving bodies [phase] and [phase] are interlocked with the movement of the upper and lower parts of the presser rods [phase] and [phase], so that each of the seven It is designed to be able to move up and down independently.

さらに、この移動体［相］［相］下部のそれぞれの前面
■と後面■には、下部を前記２木の針■■の側方までそ
れぞれ垂下した垂直板［相］［相］の上部が固定され、
この垂直板［相］■の中央部と下端部には、前記２本の
針■■の真横位置にそれぞれ抱き穴［相］［相］と［相
］［相］を貫通形成した一対の保持金［相］［相］と［
相］［相］が設けられている。そして、これらの保持金
のうち上方に設けられた一対の保持金［相］［相］の抱
き穴［相］［相］には、第２図に示すように先端部を前
記２本の針■■にそれぞれ対応させたピストンシリンダ
ー［相］［相］が止めネジによって抱き締め固定されて
お９、このシリンダー［相］［相］のピストンロッド＠
＠先端には、第３図−（ａ）−％　（１））に示すよう
にブロック状の先金■■を固定し、この先金■＠の上面
を、前記ピストンシリンダ、−［相］［相］の先端部に
ナツト締めされたＬ−形部材［相］［相］にピストンロ
ッド■■に平行に固定した案内板［相］［相］の下面に
摺動自在に接触させると共に、この先金＠＠の側面に固
定したＬ形状の案内板［相］［相］の水平部＠＠下面を
前記案内板■［相］の上面に摺動可能に接触させること
によシ、ピストンロッド■＠の回り止め作用をさせてい
る。Furthermore, on the front side ■ and rear side ■ of the lower part of this moving body [phase] [phase], there are upper parts of vertical plates [phase] [phase] whose lower parts are respectively suspended to the sides of the two needles ■■. fixed,
In the center and lower end of this vertical plate [phase]■, a pair of retainers are formed with holding holes [phase] [phase] and [phase] [phase] located directly beside the two needles ■■, respectively. Gold [phase] [phase] and [
phase] [phase] is provided. Then, as shown in Fig. 2, the tips of the two needles are inserted into the holding holes [phase] [phase] of the pair of retainers [phase] [phase] provided above among these retainers. The piston cylinders [phase] [phase] corresponding to ■■ are hugged and fixed by set screws 9, and the piston rod of this cylinder [phase] [phase] @
At the tip, a block-shaped tip ■■ is fixed as shown in Figure 3-(a)-% (1)), and the top surface of this tip ■@ is connected to the piston cylinder, -[phase][ The L-shaped member [phase] [phase] which is tightened with a nut at the tip of the By bringing the horizontal part @ @ of the lower surface of the L-shaped guide plate [phase] [phase] fixed to the side surface of the metal @ @ into slidable contact with the upper surface of the guide plate ■ [phase], the piston rod ■ It acts as a stopper for @.

又、この先金＠＠にはピストンロッド＠■に直この水平
軸＠［相］の突出部［相］［相］には、上半部を弓形［
相］■に曲げた案内棒［相］［相］の下端を固定すると
共に、下端部を水平方向に鉤形［株］［相］に曲げた糸
引出し棒［相］［相］の上端部をもこの突出部［相］［
相］に固定する。そして・この案内棒［相］［相］の上
部は、前記り形部材［相］［相］に固定したＬ形状の支
持金■■の前記水平軸［相］［相］に直交すると共にそ
の軸芯よシも２闘はど下方に貫通形成した摺動孔［相］
［株］に摺動自在に挿入されている。　・ 尚、前記糸引出し用のピストンシリンダー＠［相］は、
そのピストンロッド＠■が突出した時、第２図に示され
ているようにその先端に設けた糸引出し棒［相］［相］
の鉤形［株］杏の水平部が先ず２本の針■■の真下手前
まで斜め下方に移動した後、前記布枠え金［相］［相］
の上面から約２ｍ１ｍはど上方に隔れた空間を右方向に
ほぼ水平に移動して前記２本の針■■の真下よシ約５ｍ
１ｍはど通過した位置゛に達する円うに位置決めされて
前記一対の保持金［相］［相］にそれぞれ固定されてい
る。In addition, the upper half of the protruding part [phase] [phase] of this horizontal shaft @[phase] is directly connected to the piston rod @■.
Fix the lower end of the guide rod [phase] [phase] bent in the shape of [phase] ■, and the upper end of the thread pull-out rod [phase] [phase] with the lower end bent horizontally into a hook shape [share] [phase] This protrusion [phase] [
[phase]. And, the upper part of this guide rod [phase] [phase] is perpendicular to the horizontal axis [phase] [phase] of the L-shaped support fixed to the bow-shaped member [phase] [phase], and A sliding hole is formed through both the shaft center and the bottom of the shaft.
It is slidably inserted into the [stock].・In addition, the piston cylinder for pulling out the thread @[phase] is
When the piston rod @ ■ protrudes, as shown in Fig. 2, the thread pull-out rod [phase] [phase]
The horizontal part of the hook-shaped [stock] apricot first moves diagonally downward to just in front of the two needles ■■, and then the cloth frame holder [phase] [phase]
Move almost horizontally to the right in a space approximately 2m1m above the top surface, and move approximately 5m directly below the two needles ■■.
It is positioned in a circular manner reaching the position after passing 1 m, and is fixed to the pair of retainers [phase] [phase], respectively.

一方、前記保持金のうち下方に設けられた一対の保持金
［相］［相］の抱き穴［相］［相］には第２図に示すよ
うに先端部を前記２本の針■■上下方それぞれ対応させ
たピストンシリンダー［株］［株］が止めネジによって
抱き締め固定されておシ、このシリンダーΦ・稗のピス
トンロッド［相］■先端には、第４図−（ａ）、（１）
）に示されているようにそれぞれ糸切ジノ１す′ミ■■
が設けられ、この糸切シハサミ■■は、側方に突出した
摺動部［相］［相］を有する固定刃［相］［相］がその
上面にバネ板［相］＠を重ねた状態で固定され、さらに
、このバネ板［相］［相］と固定刃ＯＯとの間にｄ、前
記固定刃＠＠の摺動部ＯＯ側に後記する案内壁＠Ｏの長
穴＠Ｏを貫ｄして張り出した当り部Ｏ［相］を有する可
動刃［相］＠が、それぞれ段ネジ［株］［株］を介して
固定刃ＯＯ上面に回動自在に設けられておシ、この可動
刃＠＠がバネ板［相］＠の作用により固定刃Ｏ［相］上
面に圧接された状態で段ネジ［株］Ｏを中心に回動する
ことにより固定刃＠Ｏ先端との間で切断作用をするよう
になっている。On the other hand, as shown in FIG. Piston cylinders [stock] [stock] corresponding to the upper and lower sides are hugged and fixed by set screws, and the piston rods [phase] of this cylinder Φ and diameter are attached at the tips of Fig. 4-(a), ( 1)
) As shown in
is provided, and this thread cutting scissor ■■ has a fixed blade [phase] [phase] having a sliding part [phase] [phase] that protrudes to the side, and a spring plate [phase] @ superimposed on the upper surface of the fixed blade [phase] [phase]. Furthermore, between this spring plate [phase] [phase] and the fixed blade OO, a hole d is inserted through the elongated hole @O of the guide wall @O to be described later on the sliding part OO side of the fixed blade @@. A movable blade [phase] @ having a contact part O [phase] that protrudes with The blade @ @ is pressed against the upper surface of the fixed blade O [phase] by the action of the spring plate [phase] @ and rotates around the step screw [stock] O to cut between the tip of the fixed blade @ O It is designed to work.

又、前記シリンダー軸［相］の先端部には、それぞれ一
方の側部をピストンロッド［相］０の突出方向にほぼ平
行に延びた案内壁［相］＠を有する保持体ＯＯが止めネ
ジによシ抱き締め固定されておシ１この保持体Ｏｅの案
内壁０［相］に貫通形成されたビス［ンロッド０［相］
に平行な長穴＠＠に前記固定刃Ｏ＠の摺動部［相］［相
］を摺動自在に挿入することによシピストンロンド［相
］Ｏの回シ止め作用をさせている。Further, at the tip of the cylinder shaft [phase], a holder OO having a guide wall [phase] @ extending approximately parallel to the protruding direction of the piston rod [phase] 0 on one side is connected to the set screw. A screw rod 0 [phase] formed through the guide wall 0 [phase] of this holding body Oe is tightly held and fixed.
By slidably inserting the sliding part [phase] of the fixed blade O@ into the elongated hole parallel to , the rotation of the piston rond [phase] O is prevented from rotating.

さらに、この案内壁［相］［相］の基部外側面には、当
シ板［相］＠がピストンロッドＯＯの突入方向に位置調
整可能にネジ止めされておシ、この当シ板Ｏ［相］の先
端に前記可動刃＠［相］の当シ部Ｏ［相］がピストンロ
ッド［相］［相］の引っ込み動作によシ後退して当接す
ることによシ可動刃＠＠が回動して固定刃＠［相］の先
端より開くようになっている。Further, on the outer surface of the base of this guide wall [phase] [phase], this plate [phase] @ is screwed so that its position can be adjusted in the direction in which the piston rod OO enters. The movable blade @ rotates when the contact part O [phase] of the movable blade @ [phase] retreats and comes into contact with the tip of the movable blade @ [phase] due to the retraction action of the piston rod [phase] [phase]. It moves and opens from the tip of the fixed blade @[phase].

さらに、この案内壁＠［相］の先端には糸切ジノ＼サミ
閉じ周当シ壁［相］＠が設けられておシ、この当シ壁Ｏ
６に前記可動刃＠＠の当シ部＠［株］がピストンロッド
ＯＯの突出動作によシ前進して当接することによシ可動
刃［相］＠が回動じて固定刃＠＠の先端に重なる（閉じ
る）ようになっている。Furthermore, at the tip of this guide wall @ [phase], a thread cutting machine / closing circumferential wall [phase] @ is provided, and this wall O
6, when the part of the movable blade @ moves forward and comes into contact with the protruding action of the piston rod OO, the movable blade [phase] rotates and the tip of the fixed blade @ It is designed to overlap (close).

尚、前記糸切９用のピストンシリンダー・＠は、そのピ
ストンロッドｏＯが突出した時、第６図に示されている
ようにその先端に設けた固定刃Ｏ［相］布押え金［相］
［相］の下面よシ約１１１１Ｉ上方にあるように位置決
めされておシ、これによシ切断時の布上面からの上糸端
部（糸端）の長さを常に１　ｙ程度にする。In addition, when the piston rod oO protrudes from the piston cylinder @ for the thread trimmer 9, the fixed blade O [phase] provided at the tip of the piston rod oO [phase] presses the cloth as shown in Fig. 6.
It is positioned so that it is about 1111I above the bottom surface of the [phase], so that the length of the needle thread end (thread end) from the top surface of the fabric during cutting is always about 1y.

本発明は上述の様に構成されているので１例えばパンド
ループ縫付は専用ミシンに使用する場合について説明す
ると、第１．２図に示すようにズボン腰部■をミシン■
の針板■上に載置し、始動用スイッチ（図示せず）を入
れると、パンドループ形成用のテープ折曲げ供給装置（
図示せず）が作動し、ベット■の右上方よシ両端を折曲
げたテープ■を、その両端部が前後にそれぞれ独立して
設けられた布押え金［相］［相］の真下に来るように供
給する。Since the present invention is constructed as described above, 1. For example, to explain the case in which a special sewing machine is used for pandoroop sewing, as shown in Fig. 1.2, the waist part of pants is sewn using a sewing machine.
When the start switch (not shown) is turned on, the tape bending and feeding device (
(not shown) is activated, and the tape ■ with both ends bent upward to the upper right of the bed ■ is brought to a point directly below the presser feet [phase] and [phase] that are independently provided at the front and rear. Supply as follows.

そこで、アーム■の前方と側方に配置され象垂下出し、
押え棒［相］［相］を介して前後の布押え金［相］［相
］を下げてテープ■の両折曲げ端部とズボン腰部■を押
えると共に、この押え棒［相］［相］の上部に連結金［
相］［株］を介して連結された移動体［相］［相］をも
同様量押し下げる。この際移動体［相］［相］はスライ
ド軸［相］［相］と共に直立板＠［相］の案内溝＠［相
］のガイドによシ水平方向に振れることなくそれぞれが
独立して下降し、その下方に一対の保持金［株］［相］
と［株］［株］を介して一体的に設けた糸引出し用のピ
ストンシリンダー＠［相］と糸切シ用のピストンシリン
ダー［株］［株］を一前記前後の布押え金０［相］に対
して常に一定の上方位置にあるよう移動させる。Therefore, it is placed in front and on the side of the arm ■,
Lower the front and rear presser feet [phase] [phase] via the presser foot [phase] [phase] to press both bent ends of the tape ■ and the pants waist ■, and press this presser foot [phase] [phase] Consolidated gold [
The moving body [phase] [phase] connected via [phase][share] is also pushed down by the same amount. At this time, the moving body [Phase] and [Phase] together with the slide shaft [Phase] and [Phase] are guided by the guide groove @[Phase] of the upright plate @[Phase], and each of them descends independently without swinging in the horizontal direction. and a pair of holding money [shares] [phase] below it.
The piston cylinder for thread drawing @[phase] and the piston cylinder for thread cutting, which are integrally provided via the ] so that it is always at a constant upper position.

これによシ、前記シリンダー＠［相］と［株］［株］の
ピストンロッド■＠とＯ［相］の先端に設けられた糸引
出し棒［株］［株］°と糸切シハサミ■■はそれぞれ前
後の布押え金０［相］に対して常に一定の位置関係（上
下方向に対する）が確保される。Accordingly, the piston rod of the cylinder @ [phase] and [share] [share] ■ @ and the thread pull-out rod [share] [share] ° provided at the tip of O [phase] and the thread cutting scissors ■■ A constant positional relationship (with respect to the vertical direction) is always ensured with respect to the front and rear presser feet 0 [phase].

次いで、糸引出し用シリンダー＠［相］のピストンロッ
ド■■が突出し、その先端の先金■［相］を第５図に示
されているように案内板■■に沿って前進させる。この
先金［相］［相］が前進を始めると、案内棒［株］［株
］が摺動孔情゛砕に沿って下降し始め、その摺動孔［相
］［相］よシ前記先金＠＠が遠ざかるに従いまず水平軸
［相］［相］をＡ矢印方向に回動させる。水平軸１［相
］＠が前進しつつ回動すると、この軸［相］［相］に固
定された糸引出し棒０＠ｌが共に前進しながら回動し、
その先端の鉤形［株］争の水平部を一点鎖線で示す後退
位置（第６図に示す位置）からＢ矢印の軌跡に沿って前
記針■■の真下手前で、かつ布押え金０［相］の上面か
ら約２闘はど上方に離れた位置にほぼ斜め下一方に移動
させ、その後案内棒［株］；［相］の弓形０■の部分が
摺動孔［相］［相］に達すると、その弓形０ｅｌの曲げ
に応じて軸［相］［相］を最初とは逆の反Ａ矢印方向に
回動させつつ前進させて前記鉤形［相］１秒の水平部を
２木の針■■の真下よシ約５ＭＭはど右方に通過した位
置までほぼ水平に移動させる。Next, the piston rod (■■) of the thread drawing cylinder @[phase] protrudes, and the tip metal ■[phase] at its tip is advanced along the guide plate ■■ as shown in FIG. When the metal [phase] [phase] starts moving forward, the guide rod [stock] [stock] starts to descend along the sliding hole information, and the sliding hole [phase] [phase] moves forward. As gold @@ moves away, first rotate the horizontal axis [phase] [phase] in the direction of arrow A. When the horizontal axis 1 [phase] @ rotates while moving forward, the thread pull-out rod 0 @ l fixed to this axis [phase] [phase] rotates while moving forward together.
From the retracted position (position shown in Figure 6) where the horizontal part of the hook-shaped section at the tip is indicated by the dashed line (the position shown in Figure 6), move along the trajectory of arrow B to just below the needle ■■ and presser foot 0 [ Move it diagonally downward to a position about 2 feet above the top of the guide rod, and then insert the arcuate 0■ part of the guide rod into the sliding hole. When reaching , the axis [phase] [phase] is rotated in the direction of arrow A opposite to the first direction in accordance with the bending of the arcuate 0el, and the horizontal part of the hook-shaped [phase] 1 second is moved forward. Move it almost horizontally to the position where it passes about 5 mm to the right just below the tree needle ■■.

次いで、ミシン■が始動し、針棒■と水平釜■■を作動
させると共に布送りカムをも回転させ、コロ、レバー、
リンク等を介して布送り台［相］を前後左右に水平移動
させる。これによシ前後の布押え金＠［相］で押圧した
テープ■とズボン腰部Ｏを２本の針■■の上下動に対応
して前記送シ台［相］と同様に移動させて第７図に示す
ような２ケ所の閂ヌキ止縫い目■Ｏを同時に形成する・ この２ケ所のミシン縫いが完了するとミシン■が停止し
て第５図に示すように針■■を針板■上面よシ約１６１
１１上げた位置で停止させる。Next, the sewing machine ■ starts, operating the needle bar ■ and the horizontal hook ■■, as well as rotating the cloth feed cam, and the rollers, levers,
The cloth feed table [phase] is horizontally moved forward, backward, left and right via a link or the like. As a result, the tape ■ pressed by the front and rear presser feet @ [phase] and the waist part O of the pants are moved in the same manner as the feed table [phase] in response to the vertical movement of the two needles ■■. Simultaneously form the bartack stitches ■O in two places as shown in Figure 7. When the machine stitches in these two places are completed, the sewing machine ■ stops and the needle ■■ is attached to the upper surface of the throat plate ■ as shown in Figure 5. Yoshi approx. 161
11 Stop at the raised position.

次いで、前記糸引出し用のシリンダー＠［相］のピスト
ンロッド＠■が引っ込み、第６図に示すようにその先端
に設けた先金■■を案内板■［相］に沿って後進させる
と共に糸引出し棒［相］■をも後退させる。この際、糸
引出し棒［株］［相］先端の鉤形［相］［株］の水平部
は第６図のＢ矢印の軌跡に沿って逆（左）方向に後退移
動し、その水平部分でテープ■両端部上面から２本の針
■■穴に連なる上糸■■を引っ掛けて必要な長さ引出す
。これによシ後記する糸切シハサミの切断作業後の針穴
からの上糸端部を必要な長さ確保することができ、次の
縫製開始に際して糸ぬけがなく確実に縫目を形成し得る
。Next, the piston rod @■ of the cylinder @[phase] for pulling out the thread is retracted, and as shown in Fig. 6, the piston rod @■ provided at its tip is moved backward along the guide plate Also move the drawer rod [phase]■ back. At this time, the horizontal portion of the hook-shaped tip of the thread pull-out rod moves backward (to the left) along the trajectory of arrow B in Figure 6, and the horizontal portion Hook the needle thread ■■ connected to the two needles ■■ holes from the upper surface of both ends of the tape ■■ and pull it out to the required length. This makes it possible to secure the required length of the end of the needle thread from the needle hole after the cutting operation of the thread trimming scissors, which will be described later, and to form a stitch reliably without thread omission when starting the next sewing. .

次いで、糸切シ用のシリンダー［株］［相］のピストン
ロッドＯ◎が突出し、その先端に固定の糸切ジノ１サミ
■■を２本の針■■下方まで前進させる。Next, the piston rod O◎ of the cylinder [stock] [phase] for thread cutting protrudes, and the thread cutting needle 1 shim ■■ fixed at its tip is advanced to below the two needles ■■.

この際糸切りハサミ■■は、第６図に示されているよう
に２本の針■■の真下手前付近で前記糸引出し棒［相］
■によって左方向に引出された上糸■■のテープのに近
い部分の下側を前進し、前記２本の針■■の真下まで移
動した時、前記ノ＼サミ■■の可動刃Ｏ［相］の当り部
［相］［相］が案内壁Ｏｅ先端の当り壁＠［相］に当接
し、可動刃ＯＯを段ネジ［株］＠中心に回動させて固定
刃［相］＠先端との協働により上糸■■を切断する。At this time, the thread trimming scissors ■■ are placed near the bottom of the two needles ■■ as shown in FIG.
When the needle thread ■■ pulled out to the left by ■ moves forward under the part near the tape and moves to just below the two needles ■■, the movable blade O[ The contact part [phase] [phase] of the guide wall Oe comes into contact with the contact wall @ [phase] at the tip of the guide wall Oe, and the movable blade OO is rotated around the step screw [stock] @ the fixed blade [phase] @ tip. The upper thread ■■ is cut in cooperation with the

サミ■■を後進させると共に可動刃［相］＠の当シ部［
株］＠を案内壁＠［相］の基部に設けられた当シ板＠［
相］の先端に当接し、可動刃＠［相］の先端を段ネジ＠
Ｏを中心に回動させて固定刃［相］Ｏの先端よりひらけ
る。While moving Sami ■■ backwards, this part of the movable blade [Ai]@ [
The board installed at the base of the guide wall @[
contact the tip of the movable blade @[phase] with the stepped screw @
Rotate around O and open the fixed blade [phase] from the tip of O.

次いで、前記垂下シリンダー［相］［相］のピストンロ
ッドえ金［相］［相］を引き上げると共に、その押え棒
［相］［相］に連結された連結金［相］［相］を介して
移動体［相］［相］とこの移動体［相］［相］の下方に
一体的に設けられた糸引出し用シリンダー［相］［相］
及び糸切シ用シリンダー［相］［株］を同様量引き上げ
る。この際ズボン腰部■は押え作用よシ解放される。Next, the piston rod foot [phase] [phase] of the hanging cylinder [phase] [phase] is pulled up, and the piston rod foot [phase] [phase] is pulled up via the connecting metal [phase] [phase] connected to the presser rod [phase] [phase]. A moving body [phase] [phase] and a yarn drawing cylinder [phase] [phase] provided integrally below this moving body [phase] [phase]
And raise the thread cutting cylinder [phase] [stock] by the same amount. At this time, the waist part of the pants ■ is released from the presser action.

次いで、両手にてズボン腰部■を次の縫付は位置まで移
動し、前記始動スイッチを入れる。以下、この作業をく
り返すことによってズボン腰部周りにテープのを縫付け
る。Next, use both hands to move the waist part of the pants (■) to the position for the next sewing, and turn on the start switch. Next, repeat this process to sew the tape around the waist of the pants.

尚、本実施例は２本針のミシンについて説明したが、こ
の機構は１本針のミシンにもそのまま適用出来ることは
言うまでもない。゛ 従って、本発明によれば布の二ケ所を同時に縫製した後
、布から針■■に連なる２本の上糸■■を所定量引出し
て針■■側方の後退位置からそれぞれ別間に設けた糸切
シハサミ■■を針■■下方の上糸■■の部分まで進める
ことによシ同時に２本の糸を切断することが可能なもの
である。Although this embodiment has been described with reference to a two-needle sewing machine, it goes without saying that this mechanism can also be applied to a single-needle sewing machine. Therefore, according to the present invention, after sewing two places on the cloth at the same time, the two needle threads connected to the needle ■■ are pulled out from the cloth by a predetermined amount and then sewn separately from the retracted position on the side of the needle ■■. It is possible to cut two threads at the same time by advancing the provided thread cutting scissors ■■ to the part of the upper thread ■■ below the needle ■■.

又、本発明においては、布押え金［相］［相］がそれぞ
れ独立して設けられ、糸引出し装置、糸切りハサミ装置
もその布押え金［相］［相］の上下動と連動する移動体
０［相］に設けられているため、縫製物の厚さに差があ
って布押え金［相］［相］の上下位置が変っても、布押
え金［相］［相］と糸引出し棒・■及び糸切ジノ１サミ
■■との間隔は常に等しいので糸端の長さは常に等しい
ものとなる。Further, in the present invention, the presser feet [phase] [phase] are provided independently, and the thread drawing device and the thread cutting scissors device also move in conjunction with the vertical movement of the presser foot [phase] [phase]. Because it is installed at body 0 [phase], even if the vertical position of the presser foot [phase] [phase] changes due to differences in the thickness of the sewing material, the presser foot [phase] [phase] and thread Since the distance between the pull-out rod (■) and the thread trimmer 1 shim (■■) is always the same, the lengths of the thread ends are always the same.

さらに、本発明によれば、糸切シへサミ■■をピストン
シリンダー［株］［相］のピストンロッド０◎先端に直
接設け、このピストンロッド［相］Ｏの突入動を利用し
て糸切シへサミ０■の移動及び開閉動を連続的に行なわ
しめるようにしたので、構造が極めて簡単であシ、シか
も、ピストンシリンダー［株］［相］Ｋ糸切りハサミ■
■、糸切シハサミひらけ用当り板＠Ｏ１糸切シ八サへ閉
じ周当シ壁ＯＯ等を全て取付けたのでこれらをユニット
化でき、その組立が極めて容易となる等の実用上すぐれ
た効果が得られると共に、縫い始めの上糸端が布上面か
ら出る量が従来より半分以下の少量となシ縫い上がりの
きれいな縫製が出来るものである。Furthermore, according to the present invention, the thread trimmer hem ■■ is provided directly at the tip of the piston rod 0◎ of the piston cylinder [Co., Ltd.] [phase], and the thread is cut using the plunge motion of the piston rod [phase] O. Since the movement and opening/closing of the thread trimming scissors are made to occur continuously, the structure is extremely simple.
■, Thread cutter scissor opening stop plate @O1 Since all of the closing abutment walls OO etc. are attached to the thread cutter scissors, these can be made into a unit, which has excellent practical effects such as extremely easy assembly. In addition, the needle thread end protrudes from the upper surface of the fabric at the beginning of sewing by a small amount, less than half that of the conventional sewing machine, and it is possible to perform sewing with a clean finish.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の一実施例を示すもので、第１図は本発明
の上糸切シ装置をミシンに取シ付けた状態の部分省略側
面図、第２図は同正面図・第８図−（ａ）は本発明の糸
引出し装置の背面図、第８図−（ｂ）は同底面図、第４
図−（ａ）は本発明の糸切シハサミ装置の上面図、第４
図−（ｂ）は同背面図、第５．６図′は本発明に係る糸
切ｊ９　ハサミ装置と糸引出し装置の作動状態を示す部
分正面図、第７図はズボン腰部にバンドルーグ形成用の
テープを縫付けた状態の部分斜視図である。 図中、■はサイクルミシン、■は針、［相］は押え棒、
［相］はスライド軸、［相］は移動体、［相］はピスト
ンシリンダー、［株］は糸引出し棒、［株］はピストン
シリンダー、■は糸切シハサミである。 特許出願人 宮地ミシン株式会社 オ牛の （ζ）（ｂ）The drawings show one embodiment of the present invention, and FIG. 1 is a partially omitted side view of the needle thread trimming device of the present invention attached to a sewing machine, FIG. 2 is a front view of the same, and FIG. - (a) is a rear view of the thread drawing device of the present invention, Fig. 8 - (b) is a bottom view of the same, Fig. 4
Figure-(a) is a top view of the thread cutting scissors device of the present invention;
Fig. 5.6' is a partial front view showing the operating state of the thread cutting j9 scissor device and the thread pulling device according to the present invention, and Fig. 7 is a rear view of the same, Fig. It is a partial perspective view of the state in which the tape is sewn. In the diagram, ■ is a cycle sewing machine, ■ is a needle, [phase] is a presser bar,
[Phase] is the slide shaft, [Phase] is the moving body, [Phase] is the piston cylinder, [Stock] is the thread pull-out rod, [Stock] is the piston cylinder, and ■ is the thread cutting scissors. Patent applicant Miyaji Sewing Machine Co., Ltd. Ogyu (ζ) (b)

Claims (1)

【特許請求の範囲】 １）サイクルミシン■に備えられている布押え棒［相］
の動きを連結金［相］を介して、スライド軸［相］に沿
って上下動する移動体［相］に伝えるようになし、こノ
移動体［相］の下部にピストンシリンダー［相］を設け
、って前後動するように設けると共に、この糸引出し装
置の下部に、ピストンシリンダー［相］を設け、そのピ
ストンシリンダー［相］に一糸切りハサミ装置を、その
先端に設けられた糸切シへサミ■が針■の下方に向って
前後動するように設けたこと番特徴とするミシンの上糸
切り装置。 ２）２本の針■■を有するサイクルミシン■に備、　　
見られている布押え棒［相］［相］の動きを連結金０ｉ
１［相］を介して、スライド軸［相］［相］に沿ってそ
れぞれ独立して平行に上下動する２藺の移動体［相］［
相］に伝えるようになし、この２閏の移動体［相］［相
］のそれぞれの下部にピストンシリンダー＠［相］を設
け、そのピストンシリンダー［相］［相］に糸引出し装
置を、その先端に設けられた糸引出し棒［株］■がそれ
ぞれの針■■の下方に向って前後動するように設けると
共に、この糸引出し装置の下部に、ピストンシリンダー
［株］［株］を設け、そのピストンシリンダー［株］［
株］に糸切シハサミ装置を、その先端に設けられた糸切
りハサミ■■がそれぞれの針■■の下方に向って前後動
するように設けたことを特徴とするミシンの上後切シ装
置。[Claims] 1) Presser foot bar [phase] provided in cycle sewing machine ■
The movement is transmitted to the moving body [phase] that moves up and down along the slide axis [phase] through the coupling metal [phase], and a piston cylinder [phase] is installed at the bottom of this moving body [phase]. At the same time, a piston cylinder [phase] is provided at the bottom of this thread drawing device, and a thread cutting scissors device is attached to the piston cylinder [phase], and a thread cutting scissors device is attached to the tip of the piston cylinder [phase]. An upper thread trimming device for a sewing machine characterized by the fact that the hem ■ moves back and forth toward the bottom of the needle ■. 2) For a cycle sewing machine ■ with two needles ■■,
The movement of the presser foot bar [phase] [phase] is controlled by the connecting metal 0i.
1 [phase], two movable bodies [phase] that move up and down independently in parallel along the slide axes [phase] [phase]
A piston cylinder @[phase] is provided at the bottom of each of these two moving bodies [phase] [phase], and a thread drawing device is attached to the piston cylinder [phase] [phase]. A thread pull-out rod [stock] ■ provided at the tip is provided so as to move back and forth toward the bottom of each needle ■■, and a piston cylinder [stock] [stock] is provided at the bottom of this thread pull-out device, The piston cylinder [stock] [
A top and rear cutting device of a sewing machine, characterized in that a thread cutting scissors device is provided on the top end of the thread cutting scissors device so that the thread cutting scissors ■■ provided at the tip of the device move back and forth downwardly of each needle ■■. .