JPH0664Y2 - Thread shifting device for sewing machine with buttons - Google Patents

Thread shifting device for sewing machine with buttons

Info

Publication number
JPH0664Y2
JPH0664Y2 JP1989008470U JP847089U JPH0664Y2 JP H0664 Y2 JPH0664 Y2 JP H0664Y2 JP 1989008470 U JP1989008470 U JP 1989008470U JP 847089 U JP847089 U JP 847089U JP H0664 Y2 JPH0664 Y2 JP H0664Y2
Authority
JP
Japan
Prior art keywords
sewing
button
thread
needle
sewing needle
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.)
Active
Application number
JP1989008470U
Other languages
Japanese (ja)
Other versions
JPH02102177U (en
Inventor
俊彦 小島
Original Assignee
ヤマトミシン製造株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ヤマトミシン製造株式会社 filed Critical ヤマトミシン製造株式会社
Priority to JP1989008470U priority Critical patent/JPH0664Y2/en
Publication of JPH02102177U publication Critical patent/JPH02102177U/ja
Application granted granted Critical
Publication of JPH0664Y2 publication Critical patent/JPH0664Y2/en
Active legal-status Critical Current

Links

Description

【考案の詳細な説明】 [産業上の利用分野] この考案は、学生服用の金ボタンなどのように、ボタン
本体の裏面にその面に沿って貫通するボタン孔を有する
シャンクボタンやマーブルボタンを各種の縫製物に縫い
付ける場合に用いられるミシンで、詳しくは、上下に往
復運動する縫針によって生地の下方に挿通された縫糸の
下端ループ部をルーパによりひろい取るようにして、縫
目を形成するように構成されたボタン付けミシンの糸寄
せ装置に関するものである。
[Detailed Description of the Invention] [Industrial field of application] This invention provides a shank button or a marble button having a button hole penetrating along the back surface of the button body, such as a gold button for student wear. A sewing machine used to sew various kinds of sewn products. Specifically, the lower end loop portion of the sewing thread inserted below the material is sewn with a looper to form a stitch by vertically reciprocating sewing needles. The present invention relates to a thread pulling device for a button sewing machine configured as described above.

[従来の技術] 第6図はこの種の従来のボタン付けミシンの要部の正面
図、第7図は要部の側面図であり、同図において、1は
縫針で、この縫針1は同図の仮想線で示すように、一定
経路Hを上下に往復運動する。2は生地ガイドで、上記
縫針1の上下運動経路Hに生地3の縫製部3Aを突出さ
せて、この生地3の横方向の移動を案内する。4はルー
パで、上記縫針1が下死点に達したとき、その先端部4
Aが縫針1の中心になるようなタイミングで縫針1の外
面に接近して矢印a方向に回転することにより、生地3
の下方に持ち込まれた縫糸5の下端ループ部5Aをひろ
い取る。6は糸寄せ具で、この糸寄せ具6は全体がほぼ
鎌形に屈曲しているとともに、その先端には第8図
(A),(B)で拡大して明示するように、平面形状がほぼV
字状でその最深部の稜線6Bが縫針1の上下運動経路H
に対して平行な糸寄せ部6Aを形成しており、上記縫針
1が下死点に達する直前において、詳しくは、縫針1の
先端部1Aが糸寄せ具6の上面と面一になったとき、矢
印b方向に回転することにより、生地3の縫製部3Aと
上記ルーパ4および縫針1との間に掛け渡しされた2本
の縫糸5B,5Cの途中部分を、上記糸寄せ部6Aで寄
せ集めて上記縫針1の上下運動経路Hから退避させる。
[Prior Art] FIG. 6 is a front view of an essential part of a conventional button sewing machine of this type, and FIG. 7 is a side view of the essential part. In FIG. 6, 1 is a sewing needle, and 1 is the sewing needle. As shown by the imaginary line in the figure, it reciprocates up and down along a fixed path H. A fabric guide 2 guides the lateral movement of the fabric 3 by causing the sewing portion 3A of the fabric 3 to project in the vertical movement path H of the sewing needle 1. Reference numeral 4 denotes a looper, which when the sewing needle 1 reaches the bottom dead center,
By approaching the outer surface of the sewing needle 1 and rotating in the direction of arrow a at a timing such that A becomes the center of the sewing needle 1, the material 3
Take out the lower end loop portion 5A of the sewing thread 5 brought in below. 6 is a thread pulling tool, and the thread pulling tool 6 is bent almost in a sickle shape as a whole, and the tip thereof is shown in FIG.
As shown in the enlarged view in (A) and (B), the planar shape is almost V
The deepest ridgeline 6B in the shape of a letter is the vertical movement path H of the sewing needle 1.
A thread pulling portion 6A which is parallel to the thread pulling tool 6 is formed, and more specifically, when the tip portion 1A of the sewing needle 1 is flush with the upper surface of the thread pulling tool 6 immediately before reaching the bottom dead center. , By rotating in the direction of the arrow b, the middle part of the two sewing threads 5B and 5C laid between the sewing portion 3A of the material 3 and the looper 4 and the sewing needle 1 is moved by the thread shifting portion 6A. The sewing needles 1 are collected and retracted from the vertical movement path H of the sewing needle 1.

7は針受け具で、上記縫針1の上下運動経路Hをはさん
で上記糸寄せ具6に対向する個所に設けられている。こ
の針受け具7はその一端をフレーム8に固定して側方お
よび上方に延設されており、その上端部の後端に下方ほ
ど縫針1の上下運動経路Hに近づくように傾斜した針受
け面7Aが形成されている。この傾斜した針受け面7A
と縫針1の外面との間の隙間tは0.2〜0.3mm程度であっ
て、縫針1の先端部1Aが前方に曲がり状態で下降して
きた場合、上記傾斜針受け面7Aによって、縫針1の先
端部1Aを上記上下運動経路H側に滑り落し案内するよ
うに構成されている。
Reference numeral 7 is a needle receiver, which is provided at a position facing the thread shifting tool 6 across the vertical movement path H of the sewing needle 1. The needle receiver 7 has one end fixed to the frame 8 and extends laterally and upward. The needle receiver inclined toward the lower end of the upper end of the needle receiver 7 is closer to the vertical movement path H of the sewing needle 1. The surface 7A is formed. This inclined needle receiving surface 7A
The clearance t between the needle and the outer surface of the sewing needle 1 is about 0.2 to 0.3 mm, and when the tip portion 1A of the sewing needle 1 is bent forward and descends, the tip of the sewing needle 1 is moved by the inclined needle receiving surface 7A. The portion 1A is configured to slide down and guide to the vertical movement path H side.

上記構成のミシンによれば、縫針1がルーパ4に向って
下降運動するとき、先に生地3の縫製部3Aと上記ルー
パ4および縫針1との間に掛け渡しされた2本の縫糸5
B,5Cの途中部分が糸寄せ具6の糸寄せ部6Aで寄せ
集められて上記縫針1の上下運動経路Hから退避され、
その退避された寄せ糸部分の側部を通って縫針1が下方
に通過移動する。また、縫針1の先端部1Aが前方に曲
がり状態で下降してきた場合、上記傾斜針受け面7Aに
よって所定の上下運動経路H側に滑り落し案内される。
これにより、生地3の下方に持ち込まれた縫糸5の下端
ループ部5Aをルーパ4の先端部4Aにより確実にひろ
い取り、所定どおりの縫いがおこなわれる。
According to the sewing machine having the above-described structure, when the sewing needle 1 descends toward the looper 4, the two sewing threads 5 that are suspended between the sewing portion 3A of the material 3 and the looper 4 and the sewing needle 1 are used.
Intermediate portions of B and 5C are gathered together by the yarn pulling portion 6A of the yarn pulling tool 6 and retracted from the vertical movement path H of the sewing needle 1,
The sewing needle 1 moves downward through the side portion of the retracted gathering thread portion. When the tip portion 1A of the sewing needle 1 descends forward in a bent state, it is slid down and guided to the predetermined vertical movement path H side by the inclined needle receiving surface 7A.
As a result, the lower end loop portion 5A of the sewing thread 5 brought under the cloth 3 is reliably picked up by the tip end portion 4A of the looper 4, and the sewing is performed as specified.

[考案が解決しようとする課題] 以上のように構成された従来のボタン付けミシンの糸寄
せ装置によると、平ボタンを縫い付け対象とする場合と
異なり、シャンクボタンやマーブルボタンのように、そ
の裏面にボタン孔を有するボタンを縫い付け対象とする
ものであることから、つぎのような問題があった。
[Problems to be Solved by the Invention] According to the thread shifting device of the conventional button sewing machine configured as described above, unlike the case where the flat button is sewn, like the shank button and the marble button, Since the button having the button hole on the back side is to be sewn, there is the following problem.

即ち、この種のミシンは、縫い付け対象ボタンがシャン
クボタンやマーブルボタンといったように、その裏面に
ボタン孔を有するものであり、また、そのボタン孔の形
状や大きさも様々である。このような多くの種類のボタ
ンを1台のミシンで縫い付けることができるようにする
ために、この種のミシンでは、生地ガイドに針の動き範
囲を規制する針落し孔を有する針板を取り付けていな
い。それ故に、上記した従来の糸寄せ具のように、ほぼ
V字状の糸寄せ部の最深部の1Aの稜線6Bが縫針1の
上下運動経路Hに対して平行に形成されたものである
と、先に持ち込まれ糸寄せ具により寄せ集められた2本
の糸5B,5Cの間に縫針1が落ち込む可能性が高く、
その結果、所定の縫目を安定よく形成することができな
くなるという問題があった。
That is, in this type of sewing machine, the button to be sewn has a button hole on its back surface, such as a shank button or a marble button, and the button hole has various shapes and sizes. In order to enable many kinds of buttons to be sewn with one sewing machine, this kind of sewing machine has a needle plate having a needle drop hole for restricting the movement range of the needle attached to the material guide. Not not. Therefore, as in the above-described conventional thread pulling tool, the ridgeline 6B of the deepest portion 1A of the substantially V-shaped thread pulling portion is formed parallel to the vertical movement path H of the sewing needle 1. , There is a high possibility that the sewing needle 1 will fall between the two threads 5B and 5C that were previously brought together and collected by the thread shifting tool.
As a result, there is a problem in that the predetermined stitches cannot be formed stably.

この考案は上記の実情に鑑みてなされたもので、ごく簡
単な構造改良を施すだけで、適確な糸寄せ性能を発揮さ
せて所定の縫いを確実に安定よく形成することができる
ボタン付けミシンの糸寄せ装置を提供することを目的と
する。
The present invention has been made in view of the above circumstances, and a sewing machine with a button that can perform a proper stitching performance and surely and stably form a predetermined stitch by merely making a very simple structural improvement. An object of the present invention is to provide a yarn pulling device.

[課題を解決するための手段] 上記目的を達成するために、この考案に係るボタン付け
ミシンの糸寄せ装置は、生地とルーパおよび縫針との間
に掛け渡しされた2本の縫糸部分の途中部分を寄せ集め
て、縫針の上下運動経路から退避させるように運動する
糸寄せ具の先端部に形成されたV字状の糸寄せ部を、そ
の最深部の稜線が上記縫針の上下運動経路に対して傾斜
するように形成したことを特徴とする。
[Means for Solving the Problems] In order to achieve the above object, the thread shifting device of the button sewing machine according to the present invention is provided with a middle of two sewing thread portions which are suspended between the cloth, the looper and the sewing needle. The V-shaped thread pulling portion formed at the tip of the thread pulling tool that moves so that the portions are gathered together and retracted from the vertical movement path of the sewing needle, and the ridge line at the deepest portion is the vertical movement path of the sewing needle. It is characterized in that it is formed so as to be inclined with respect to it.

[作用] この考案によれば、縫針が下降してくる場合、先に持ち
込まれて生地とルーパとの間およびルーパと縫針との間
に掛け渡しされた2本の縫糸の途中部分を糸寄せ具にお
けるV字状の糸寄せ部の傾斜稜線に沿わせて寄せ集める
ことにより、2本の糸部分をその上方での広がりの少な
い状態のままで縫針の上下運動経路から退避させて、縫
針が2本の寄せ糸部分の間に落ち込むことを防止でき
る。これによって、先に持ち込まれた縫糸と次に持ち込
まれる縫糸とが前後に重なり合い、所定どおりの縫いを
正常、確実におこなうことができる。
[Operation] According to the present invention, when the sewing needle descends, the middle part of the two sewing threads which are brought in first and are passed between the cloth and the looper and between the looper and the sewing needle is moved. By gathering along the inclined ridgeline of the V-shaped thread pulling portion in the tool, the two thread portions are retracted from the vertical movement path of the sewing needle with a little spread above it, and the sewing needle is It can be prevented from falling between the two gathering yarn portions. As a result, the suture thread previously brought in and the suture thread brought in next overlap with each other in the front-rear direction, so that the predetermined sewing can be performed normally and reliably.

[考案の実施例] 以下、この考案の一実施例を図面に基づいて説明する。[Embodiment of the Invention] An embodiment of the invention will be described below with reference to the drawings.

第1図はこの考案の一実施例によるボタン付けミシンの
要部の斜視図であり、同図において、1は縫針で、この
縫針1はミシンアーム11内に設けた昇降駆動機構(図
示省略)などを介して一定経路Hを上下に往復運動す
る。2は生地ガイドで、この生地ガイド2は二つ折り生
地3を水平面に沿って左右横方向に移動案内するもの
で、前後に一定幅の帯板状に形成されており、針落し孔
をもった針板は備えていない。14はボタンホルダー
で、シャンクボタン9をそれの裏面に設けたシャンク部
9aのボタン孔9bが上下に貫通する立ち姿勢でボタン
周部の両側から挾持する左右一対の円弧状の挟持片14
A,14Bを備えており、このボタンホルダー14は根
付け時も根巻き時もシャンクボタン9を上記した立ち姿
勢のままに保持するように一定の姿勢に保たれる。
FIG. 1 is a perspective view of an essential part of a sewing machine with buttons according to an embodiment of the present invention. In FIG. 1, reference numeral 1 is a sewing needle, and the sewing needle 1 is a lifting drive mechanism (not shown) provided in a sewing machine arm 11. And reciprocates up and down the fixed path H via the above. Reference numeral 2 denotes a cloth guide, which guides the folded cloth 3 to move laterally in the horizontal direction along a horizontal plane, and is formed in a strip plate shape having a constant width in the front and back and has a needle drop hole. It does not have a needle plate. Reference numeral 14 denotes a button holder, which is a pair of left and right arc-shaped gripping pieces that sandwich the shank button 9 from both sides of the button periphery in a standing posture in which a button hole 9b of a shank portion 9a provided on the back surface of the shank button 9 penetrates vertically.
The button holder 14 is provided with A and 14B, and is maintained in a fixed posture so as to hold the shank button 9 in the standing posture described above both when rooting and when winding the root.

10は生地ホルダーで、シャンクボタン9を縫着する生
地3を二つ折りにして、その二つ折り生地3の中間に挿
入されて生地3のボタン縫付け個所を上記縫針1の上下
運動経路Hに近接させて固定する。20は生地ホルダー
回転用シリンダで、このシリンダ20の収縮伸長により
上記生地ホルダー10を生地3に対して固定状態と解除
状態とに切換可能に構成している。
Reference numeral 10 is a material holder, which is formed by folding the material 3 for sewing the shank button 9 in half and inserting it in the middle of the folded material 3 so that the button sewing point of the material 3 is close to the vertical movement path H of the sewing needle 1. Let it be fixed. A dough holder rotating cylinder 20 is configured such that the dough holder 10 can be switched between a fixed state and a released state with respect to the dough 3 by contraction and extension of the cylinder 20.

12は生地押え、13は生地押え作動シリンダで、この
生地押え12は上記生地ホルダー10により生地ガイド
2上に載置される二つ折り生地3の上面に斜め上方から
当接して、この生地3を前方に向かって押圧あうること
で生地3の撓みを防ぐものである。
12 is a material presser, 13 is a material presser operating cylinder, and this material presser 12 is brought into contact with the upper surface of the double-folded material 3 placed on the material guide 2 by the material holder 10 obliquely from above, and the material 3 is held. The material 3 can be prevented from bending by being able to press it forward.

15は可動テーブルで、この可動テーブル15は図示省
略した2つのステッピングモータおよびタイミングベル
トを介して水平面内で互いに直交する二次元方向、つま
りX−Y軸方向に往復駆動移動するように構成されてい
る。16,17は左右一対の生地ホルダー腕で、上記可
動テーブル15の左右両側面に固定されており。この一
対の生地ホルダー腕16,17間に亘って上記生地ガイ
ド2を固定連結することにより、上記ボタンホルダー1
4および生地ホルダー10が可動テーブル15を介して
X−Y軸方向に往復移動可能に構成されている。
Reference numeral 15 denotes a movable table. The movable table 15 is configured to reciprocate in two-dimensional directions orthogonal to each other in a horizontal plane, that is, the XY axis directions, via two stepping motors and timing belts (not shown). There is. A pair of left and right cloth holder arms 16 and 17 are fixed to the left and right side surfaces of the movable table 15. By fixing and connecting the material guide 2 across the pair of material holder arms 16 and 17, the button holder 1
4 and the cloth holder 10 are configured to be reciprocally movable in the X-Y axis directions via the movable table 15.

18はボタン押え具、19はボタン押え具作動シリンダ
で、ボタン縫い付け時におけるシリンダ19の伸長作動
によりボタンホルダー14に保持されたシャンクボタン
9の表面の中央部に当接して、このシャンクボタン9お
よびボタンホルダー14の全体を上記生地ガイド2に対
して所定通りの姿勢に固定するように構成している。
Reference numeral 18 is a button retainer, and 19 is a button retainer actuating cylinder, which comes into contact with the central portion of the surface of the shank button 9 held by the button holder 14 by the extension operation of the cylinder 19 at the time of button sewing. The entire button holder 14 is fixed to the cloth guide 2 in a predetermined posture.

上記のような構成のボタン付けミシンにおいて、上記生
地ガイド2の下方には、第6図で示す従来例と同様に、
ルーパ4と糸寄せ具6と固定の針受け具7とが設けられ
ており、それら各部品の構成は、以下に述べる点を除い
て従来のものと同一であるため、ここでは詳細な説明を
省略し、相違する点についてのみ説明する。
In the button-attached sewing machine having the above-described structure, below the material guide 2, as in the conventional example shown in FIG.
A looper 4, a yarn pulling tool 6, and a fixed needle receiving tool 7 are provided, and the configuration of each of these parts is the same as the conventional one except for the points described below, so a detailed description will be given here. It will be omitted and only the differences will be described.

第2図は要部の側面図であり、同図において、6Bは糸
寄せ具6におけるV字状の糸寄せ部6Aの最深部の稜線
で、この稜線6Bは第3図および第4図に明示するよう
に、上記縫針1の上下運動経路Hに対して、下方ほど離
れるように傾斜させて形成されている。また、21は傾
斜針受け面で、この針受け面21は糸寄せ具6の先端の
糸寄せ部6A近傍の側縁部に下方ほど上記縫針1の上下
運動経路Hに近づくような傾斜面に形成されており、上
記した固定の針受け具7における針受け面7Aよりもや
や上部で、かつその針受け面7Aに対して逆傾斜面に形
成されている。
FIG. 2 is a side view of the main part. In FIG. 2, 6B is the deepest ridgeline of the V-shaped thread pulling portion 6A in the thread pulling tool 6, and this ridgeline 6B is shown in FIG. 3 and FIG. As clearly shown, the sewing machine 1 is formed so as to be inclined with respect to the up-and-down movement path H of the sewing needle 1 such that the sewing needle 1 is separated further downward. Reference numeral 21 denotes an inclined needle receiving surface, and the needle receiving surface 21 is an inclined surface that is closer to the vertical movement path H of the sewing needle 1 toward the side edge portion near the thread pulling portion 6A at the tip of the thread pulling tool 6. It is formed, and is formed slightly above the needle receiving surface 7A of the fixed needle receiving tool 7 described above, and is formed in a reverse inclined surface with respect to the needle receiving surface 7A.

つぎに、上記構成の動作について説明する。Next, the operation of the above configuration will be described.

第1図のように、ボタンホルダー14の一対の挾持片1
4A,14Bによりシャンクボタン9をその周部の両側
から挾持させた上で、ボタン押え具18を作動させて、
その先端部をシャンクボタン9の表面の中央部に当接さ
せてボタンホルダー14を含めて生地ガイド2の背面に
強制的に押付ることにより、シャンクボタン9のボタン
ホルダー14に対するセット姿勢を規定するとともに、
ボタンホルダー14のガタもなくして、ボタン9および
ホルダー14をともに所定通りのボタン付け姿勢に固定
し保持する。
As shown in FIG. 1, a pair of holding pieces 1 of the button holder 14
4A and 14B hold the shank button 9 from both sides of its circumference, and then operate the button retainer 18,
The tip of the shank button 9 is brought into contact with the center of the front surface of the shank button 9 and is forcibly pressed against the back surface of the fabric guide 2 including the button holder 14, thereby defining the setting posture of the shank button 9 with respect to the button holder 14. With
Both the button 9 and the holder 14 are fixed and held in a predetermined button attachment posture without looseness of the button holder 14.

これに並行して、生地ホルダー10に生地3を二つ折り
にしてセットする。次に、図示省略したペダルの踏み込
みによりシリンダ20を伸長させて、生地ホルダー10
を生地ガイド2の上面に二つ折り生地3とともに押圧し
固定するとともに、シリンダ13の伸長により生地押え
12が二つ折り生地3の上面を上方から押えて生地3の
撓みなどを防ぐ。
In parallel with this, the dough 3 is folded in two and set in the dough holder 10. Next, the cylinder 20 is extended by depressing a pedal (not shown), and the cloth holder 10
Is fixed to the upper surface of the cloth guide 2 together with the half-folded cloth 3 and the cylinder 13 is extended so that the cloth presser 12 presses the upper surface of the half-folded cloth 3 from above to prevent the cloth 3 from bending.

この状態で、図外のボタン付けスイッチをONすると、
図示を省略したマイクロコンピュータによる動作制御の
もとで、上記可動テーブル15がX軸方向およびY軸方
向に往復駆動移動されて、根付けおよび根巻きの一連の
ボタン付けがおこなわれる。
In this state, if the button switch (not shown) is turned on,
Under operation control by a microcomputer (not shown), the movable table 15 is reciprocally driven and moved in the X-axis direction and the Y-axis direction, and rooting and a series of buttoning of root winding are performed.

以上のようなボタン付け動作において、上記糸寄せ具6
は次のように動作する。
In the button attaching operation as described above, the thread pulling tool 6
Works as follows.

すなわち、第5図(A)は、縫針1がシャンクボタン9の
ボタン孔9bおよび生地3を通過し、縫糸の下端ループ
部がルーパ4にひろい取られ、縫針1が上死点に達して
いる状態であり、この状態において、2本の縫糸5B,
5Cが生地3とルーパ4との間およびルーパ4と縫針1
との間に掛け渡しされている。次に、縫針1がボタン9
のボタン孔9bの外部において生地3を通過してルーパ
4に向って下降し、この縫針1先端部1Aが糸寄せ具6
の上面と面一になったタイミングで、上記糸寄せ具6が
矢印b方向に回転することにより、その先端の糸寄せ部
6Aで上記2本の縫糸5B,5Cをひっかけ、かつ糸寄
せ部6Aの最深部の稜線6B側に寄せ集める。このと
き、最深部の稜線6Bが傾斜しているため、寄せ集めら
れた2本の縫糸5B,5Cは第5図(B)で示すように、
縫針1の上下運動経路Hに対して傾斜した姿勢でその上
下運動経路Hの側方に退避することになる。それゆえ
に、2本の縫糸5B,5Cの上方部分が互いに密接した
ままで、縫針1の上下運動経路Hの前方側に変位し、縫
針1が2本の縫糸5B,5C間に落ち込むことが確実に
防止される。また、上記縫針1が下死点に達したときに
おいても、上記糸寄せ具6は第5図(C)で示すように上
記と同様な糸寄せ作用状態にあるため、新しく持ち込ま
れた縫糸5の下端ループ部5Aをルーパ4により確実に
ひろい取ることになり、したがって、所定の縫いを確実
におこなうことができる。
That is, in FIG. 5 (A), the sewing needle 1 passes through the button hole 9b of the shank button 9 and the cloth 3, the lower end loop portion of the sewing thread is picked up by the looper 4, and the sewing needle 1 reaches the top dead center. State, and in this state, two sewing threads 5B,
5C is between the cloth 3 and the looper 4 and between the looper 4 and the sewing needle 1
It has been handed over between. Next, the sewing needle 1 is button 9
Outside the button hole 9b of the sewing machine, the cloth 3 passes through the cloth 3 and descends toward the looper 4, and the tip portion 1A of the sewing needle 1 moves to the thread pulling tool 6
When the thread pulling tool 6 rotates in the direction of the arrow b at the timing when the thread pulling tool 6 is flush with the upper surface of the sewing machine, the thread pulling section 6A at the tip of the thread pulls the two sewing threads 5B and 5C and the thread pulling section 6A. Collect on the ridgeline 6B side of the deepest part. At this time, since the deepest ridgeline 6B is inclined, the two gathered sewing threads 5B and 5C are, as shown in FIG. 5 (B),
The sewing needle 1 is retracted to the side of the vertical movement path H in a posture inclined with respect to the vertical movement path H. Therefore, it is ensured that the upper portions of the two sewing threads 5B and 5C are in close contact with each other and are displaced to the front side of the vertical movement path H of the sewing needle 1 and the sewing needle 1 falls between the two sewing threads 5B and 5C. To be prevented. Further, even when the sewing needle 1 reaches the bottom dead center, the thread shifting tool 6 is in the same thread shifting action state as shown in FIG. Since the lower end loop portion 5A of the above is surely picked up by the looper 4, it is possible to surely perform the predetermined sewing.

なお、ボタン付け動作において、針1の先端部1Aが前
方への曲がり状態で下降してきたときは、固定の針受け
具7における傾斜針受け面7Aに誘導されて、その縫針
1の先端部1Aを後方側に曲がり矯正しながら所定の上
下運動経路Hに滑り落し案内し、また、針1の先端部1
Aが後方への曲がり状態で下降してきたときは、上記糸
寄せ具6の先端近くに形成された傾斜針受け面21に誘
導されて、その縫針1の先端部1Aを前方側に曲がり矯
正しながら所定の上下運動経路Hに滑り落し案内するこ
とが可能で、縫針1や糸寄せ具6などの破損、変形を防
止できるばかりでなく、ルーパ4による糸のひろい取り
を一層確実にすることができる。
In addition, in the buttoning operation, when the tip portion 1A of the needle 1 descends in a state of being bent forward, the tip portion 1A of the sewing needle 1 is guided by the inclined needle receiving surface 7A of the fixed needle holder 7. Guides the needle 1 by sliding it down into a predetermined vertical movement path H while straightening it backward.
When A descends in a state of being bent backward, it is guided by the inclined needle receiving surface 21 formed near the tip of the thread pulling tool 6 and straightens the tip portion 1A of the sewing needle 1 to the front side. While being able to slide down and guide in a predetermined vertical movement path H, not only damage and deformation of the sewing needle 1 and the thread pulling tool 6 etc. can be prevented, but also the removal of the thread by the looper 4 can be made more reliable. it can.

また、上記実施例では適用対象ボタンとして、シャンク
ボタンを用いた場合について説明したが、、マーブルボ
タンの縫い付けに使用する場合も上記と同様な効果を奏
する。
Further, although the case where the shank button is used as the application target button has been described in the above embodiment, the same effect as described above can be obtained when the shank button is used for sewing the marble button.

[考案の効果] 以上のように、この考案によれば、生地の下方に先に持
ち込まれている2本の縫糸の途中部分を1点に寄せ集め
て、次に糸を持ち込む縫針の上下運動経路に対して傾斜
させた姿勢で退避させることができるから、寄せ集め個
所だけでなく、その寄せ集め個所の上方の2本の糸部分
を広くげることなく、密接させたままで縫針の上下運動
経路に対して前後に変位させるといった適確な糸寄せ性
能を発揮させることができる。したがって、針落し孔を
もった針板を具備していなくて、ボタンの種類に対応し
て次に糸を持ち込む縫針の落し位置を前後に変動させる
ことの多いこの種のボタン付けミシンでありながら、そ
の縫針が先に持ち込まれている2本の縫糸の間に落ち込
むのを防止して、所定の縫いを安定よくおこなえる。つ
まり、ボタン付けを確実に、かつ安定よくおこなうこと
ができる。
[Effects of the Invention] As described above, according to this invention, the midpoints of the two sewing threads that are previously brought under the material are gathered together at one point, and the vertical movement of the sewing needle that carries the thread next is brought together. Since it can be retracted in a posture tilted with respect to the route, not only the gathering point but also the two thread portions above the gathering point are not widened, but the needle is moved up and down in close contact with each other. It is possible to exert an appropriate yarn pulling performance such as displacing the yarn in the front-back direction with respect to the route. Therefore, even though this type of button sewing machine does not have a needle plate with needle drop holes, it often changes back and forth the drop position of the sewing needle that brings in the next thread according to the type of button. , The sewing needle can be prevented from falling between the two previously brought in sewing threads, and predetermined sewing can be performed stably. That is, it is possible to attach the button reliably and stably.

特に、寄せ集めた2本の糸部分を後方側に退避させるよ
うに構成する場合は、ルーパによる縫糸のひろい取りも
確実なものにでき、縫いを一層安定化できる。
In particular, when the two gathered thread portions are configured to be retracted to the rear side, the looper can surely remove the sewing thread, and the sewing can be further stabilized.

【図面の簡単な説明】[Brief description of drawings]

第1図はこの考案の一実施例を示すボタン付けミシンの
要部の斜視図、第2図は要部の側面図、第3図は要部の
拡大平面図、第4図は第3図のIV−IV線矢視の側面図、
第5図(A),(B),(C)は糸寄せ動作を説明するための要
部の拡大斜視図、第6図はこの考案および従来例に共通
する要部の正面図、第7図は従来例の要部の側面図、第
8図(A),(B)は従来例の要部の拡大平面図とその側面図
である。 1…縫針、2…生地ガイド、3…生地、4…ルーパ、
5,5B,5C…縫糸、6…糸寄せ具、6A…V字状の
糸寄せ部、6B…糸寄せ部の最深部の稜線、7…針受け
具、9…シャンクボタン、10…生地ホルダー、14…
ボタンホルダー、15…可動テーブル、H…縫針の上下
運動経路。
FIG. 1 is a perspective view of an essential part of a button sewing machine showing an embodiment of the present invention, FIG. 2 is a side view of the essential part, FIG. 3 is an enlarged plan view of the essential part, and FIG. 4 is FIG. IV-IV line side view of
5 (A), (B), and (C) are enlarged perspective views of a main part for explaining the thread shifting operation, and FIG. 6 is a front view of the main part common to the present invention and the conventional example, and FIG. FIG. 8 is a side view of the main part of the conventional example, and FIGS. 8A and 8B are an enlarged plan view and a side view of the main part of the conventional example. 1 ... Sewing needle, 2 ... Fabric guide, 3 ... Fabric, 4 ... Looper,
5, 5B, 5C ... Sewing thread, 6 ... Thread shifting tool, 6A ... V-shaped thread shifting section, 6B ... Deepest ridge line of the thread shifting section, 7 ... Needle receiving tool, 9 ... Shank button, 10 ... Fabric holder , 14 ...
Button holder, 15 ... Movable table, H ... Vertical movement path of sewing needle.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】一定経路を上下に往復運動する縫針と、二
つ折りした生地の水平面に沿った横方向の移動を案内す
る生地ガイドと、上記二つ折り生地の中間に挿入されて
この生地のボタン縫付け個所を上記縫針の上下運動経路
に近接させて固定保持する生地ホルダーと、この生地ホ
ルダーに対向させて裏面側のボタン孔が上下に貫通する
姿勢でボタンを保持するボタンホルダーと、このボタン
ホルダーおよび上記生地ホルダーを上記縫針の上下運動
経路に対して互いに直交する二次元方向に往復移動させ
る駆動装置と、上記縫針が下死点に達した時点で縫糸の
下端ループ部をひろい取るルーパと、上記縫針が下死点
に達する直前において生地とルーパおよび縫針との間に
掛け渡しされた2本の縫糸の途中部分を寄せ集めて上記
縫針の上下運動経路から退避させるように運動する糸寄
せ具とを具備したボタン付けミシンにおいて、上記糸寄
せ具の先端部に形成されたV字状の糸寄せ部を、その最
深部の稜線が上記縫針の上下運動経路に対して傾斜する
ように形成したことを特徴とするボタン付けミシンの糸
寄せ装置。
1. A sewing needle which reciprocates up and down along a certain path, a cloth guide which guides lateral movement of a bi-folded cloth along a horizontal plane, and a button of the cloth which is inserted in the middle of the bi-folded cloth. A material holder for fixing and holding the sewn portion close to the vertical movement path of the sewing needle, a button holder for holding the button in a posture in which the button hole on the back side is vertically penetrated facing the material holder, and this button A drive device for reciprocating the holder and the material holder in two-dimensional directions orthogonal to each other with respect to the vertical movement path of the sewing needle, and a looper for picking up the lower end loop portion of the sewing thread when the sewing needle reaches the bottom dead center. Immediately before the sewing needle reaches the bottom dead center, the intermediate portions of the two sewing threads that have been laid between the cloth, the looper and the sewing needle are gathered together to bring up and down the movement of the sewing needle. In a button-attached sewing machine including a thread pulling tool that moves so as to retract from the thread pulling tool, a V-shaped thread pulling section formed at a tip end of the thread pulling tool has a deepest ridge line for vertical movement of the sewing needle. A thread shifting device for a button sewing machine, which is formed so as to be inclined with respect to a route.
【請求項2】上記糸寄せ具が、その先端部のV字状の糸
寄せ部に寄せ集めた2本の縫糸部分を上記縫針の上下運
動経路に対して後方側に退避させる方向に回転するよう
に構成されている請求項1記載のボタン付けミシンの糸
寄せ装置。
2. The thread pulling tool rotates in a direction in which two sewing thread portions gathered in a V-shaped thread pulling portion at the tip end thereof are retracted rearward with respect to the vertical movement path of the sewing needle. The thread shifting device for the button sewing machine according to claim 1, wherein the thread shifting device is configured as described above.
JP1989008470U 1989-01-27 1989-01-27 Thread shifting device for sewing machine with buttons Active JPH0664Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989008470U JPH0664Y2 (en) 1989-01-27 1989-01-27 Thread shifting device for sewing machine with buttons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989008470U JPH0664Y2 (en) 1989-01-27 1989-01-27 Thread shifting device for sewing machine with buttons

Publications (2)

Publication Number Publication Date
JPH02102177U JPH02102177U (en) 1990-08-14
JPH0664Y2 true JPH0664Y2 (en) 1994-01-05

Family

ID=31214375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989008470U Active JPH0664Y2 (en) 1989-01-27 1989-01-27 Thread shifting device for sewing machine with buttons

Country Status (1)

Country Link
JP (1) JPH0664Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH088773Y2 (en) * 1990-07-31 1996-03-13 ジューキ株式会社 Button sewing machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5623636A (en) * 1979-08-02 1981-03-06 Matsushita Electric Ind Co Ltd High-frequency heating device
JPS6044777B2 (en) * 1975-05-02 1985-10-05 Tokyo Shibaura Electric Co
JPS6325973B2 (en) * 1979-02-15 1988-05-27 Mitsubishi Electric Corp
JPS63279873A (en) * 1987-05-11 1988-11-16 Yamato Sewing Machine Mfg Root winding method and apparatus of button sewing machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6342948Y2 (en) * 1983-09-02 1988-11-09
JPH0214771Y2 (en) * 1985-12-24 1990-04-20
JPH0214777Y2 (en) * 1986-07-31 1990-04-20

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6044777B2 (en) * 1975-05-02 1985-10-05 Tokyo Shibaura Electric Co
JPS6325973B2 (en) * 1979-02-15 1988-05-27 Mitsubishi Electric Corp
JPS5623636A (en) * 1979-08-02 1981-03-06 Matsushita Electric Ind Co Ltd High-frequency heating device
JPS63279873A (en) * 1987-05-11 1988-11-16 Yamato Sewing Machine Mfg Root winding method and apparatus of button sewing machine

Also Published As

Publication number Publication date
JPH02102177U (en) 1990-08-14

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