JP3118990B2 - Needle bar holding device in multi-needle sewing machine - Google Patents
Needle bar holding device in multi-needle sewing machineInfo
- Publication number
- JP3118990B2 JP3118990B2 JP04282037A JP28203792A JP3118990B2 JP 3118990 B2 JP3118990 B2 JP 3118990B2 JP 04282037 A JP04282037 A JP 04282037A JP 28203792 A JP28203792 A JP 28203792A JP 3118990 B2 JP3118990 B2 JP 3118990B2
- Authority
- JP
- Japan
- Prior art keywords
- needle
- needle bar
- sewing machine
- balance
- sewing
- 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
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、刺繍用ミシン等の多針
ミシンにおける針棒を待機上昇位置に保持するための針
棒保持装置の構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a needle bar holding device for holding a needle bar at a standby rising position in a multi-needle sewing machine such as an embroidery sewing machine.
【0002】[0002]
【従来の技術】従来、この種の多針ミシンにおける針棒
保持装置の先行技術として、特開平4−51991号公
報には、天秤及び針棒を並列的に上下動自在に支持する
ためのスライドケースをミシンヘッドに対して左右移動
可能に装着し、前記スライドケースには、前記各針棒の
下部と上下中途部とを上下摺動自在に案内するように嵌
挿する上下対の横長のガイド部を設け、この対のガイド
部の間において、各針棒には当該各針棒を昇降させるた
めの針抱きを取りつける一方、各針棒に被嵌するコイル
バネを、当該各針棒の上端のバネ受けと上側のガイド部
との間に位置させて、この各針棒を待機位置に上昇させ
るべく上向き付勢した構成が開示されている。2. Description of the Related Art Conventionally, as a prior art of a needle bar holding device in a multi-needle sewing machine of this kind, Japanese Patent Application Laid-Open No. 4-51991 discloses a slide for supporting a balance and a needle bar in a vertically movable manner. A pair of upper and lower horizontal guides which are mounted so that the case can be moved to the left and right with respect to the sewing machine head, and the slide case is inserted into the slide case so as to guide the lower part of each of the needle bars and the middle part of the needle bar up and down freely. A portion is provided, and between each pair of guide portions, each needle bar is provided with a needle holder for raising and lowering each needle bar, and a coil spring fitted on each needle bar is provided at the upper end of each needle bar. A configuration is disclosed in which the needle bar is positioned between a spring receiver and an upper guide portion and is urged upward to raise each needle bar to a standby position.
【0003】[0003]
【発明が解決しようとする課題】ところで、刺繍用等の
多針ミシンにおける各針棒は縫製作業に際しては、その
針棒が下降した位置で上下動するものであり、反対に縫
製しないように待機する位置は各針棒の下端に装着され
た縫針の下端が被縫製物から外れた高い位置に保持しな
ければならない。By the way, each needle bar in a multi-needle sewing machine for embroidery or the like moves up and down at the position where the needle bar is lowered during sewing operation, and conversely stands by so as not to sew. The sewing position must be held at a high position where the lower end of the sewing needle attached to the lower end of each needle bar is disengaged from the workpiece.
【0004】しかしながら、前記のように、各針棒を上
向き付勢させるためのコイルバネを、当該各針棒の上端
のバネ受けと上側のガイド部との間に位置させた場合に
は、縫製作業中(針棒の下降中)に圧縮されたコイルバ
ネの存在に拘らず、針棒がさらに上下動できるようにす
るため、当該針棒の長さを長く形成しなければならない
から、スライドケースの高さが大きくなってミシンの頭
部が嵩張るという問題がある。However, as described above, when the coil spring for urging each needle bar upward is located between the spring receiver at the upper end of each needle bar and the upper guide portion, the sewing operation is not performed. Regardless of the presence of the coil spring compressed inside (during the lowering of the needle bar), the length of the needle bar must be increased to allow the needle bar to move up and down. There is a problem that the head of the sewing machine becomes bulky due to the large size.
【0005】しかも、各針棒の上端には、前記被嵌する
コイルバネの上端を支持するためのバネ受けを、一体的
または着脱自在に設ける必要があるから、ストレートな
針棒に比べて、針棒に余分の加工をしなければならず、
この点からも製造コストが高くなるという問題があっ
た。本発明は、これらの問題を解決するためになされた
ものであり、コンパクトで製造コストも廉価な多針ミシ
ンにおける針棒保持装置を提供することを目的とするも
のである。In addition, a spring receiver for supporting the upper end of the coil spring to be fitted needs to be integrally or detachably provided at the upper end of each needle bar. You have to do extra processing on the rod,
From this point, there is a problem that the manufacturing cost is increased. The present invention has been made to solve these problems, and has as its object to provide a needle bar holding device for a multi-needle sewing machine that is compact and inexpensive to manufacture.
【0006】[0006]
【課題を解決するための手段】前記目的を達成するた
め、本発明の多針ミシンにおける針棒保持装置は、ミシ
ンヘッドの前面に対して左右摺動可能に装着したスライ
ドケースに、複数本の針棒とこれに対応する天秤とを一
定間隔にて配置し、ミシンヘッドには、スライドケース
の左右移動にて選択された一本の針棒と天秤とを上下駆
動する駆動機構を設けてなる多針ミシンに使用されるも
のであって、前記スライドケースには、前記各針棒の上
下中途部を上下摺動自在に案内する上下一対のガイド部
を備え、各針棒に取付けられた針棒抱きを、前記上下対
のガイド部の間に位置させる一方、前記各針棒に被嵌し
て上向き付勢するコイルバネを、当該針棒抱きと下ガイ
ド部の上面との間に配置したものである。In order to achieve the above object, a needle bar holding device of a multi-needle sewing machine according to the present invention comprises a plurality of slide cases mounted on a slide case slidably mounted on a front surface of a sewing head. The needle bar and the balance corresponding thereto are arranged at regular intervals, and the sewing machine head is provided with a drive mechanism for vertically driving one needle bar and the balance selected by moving the slide case left and right. A needle used for a multi-needle sewing machine, wherein the slide case includes a pair of upper and lower guides for guiding the upper and lower intermediate portions of the respective needle bars slidably up and down, and needles attached to the respective needle bars. A bar hanger is positioned between the upper and lower guides, and a coil spring that is fitted to each of the needle bars and urges upward is disposed between the needle bar hanger and the upper surface of the lower guide. It is.
【0007】[0007]
【実施例】次に、本発明を具体化した実施例について説
明する。図1は、複数のミシンアーム1をテーブル2に
対して並列配置した刺繍用の多頭、多針ミシンの平面図
である。各ミシンアーム1の後端に着脱自在に設けた中
空筒状のブラケット3に横方向に貫通する共通横軸4は
一つの駆動モータ5により回転駆動させられ、各ブラケ
ット3内の伝動機構を介して各ミシンアーム1内に配置
した上軸6に動力伝達される。Next, an embodiment of the present invention will be described. FIG. 1 is a plan view of an embroidery multi-head, multi-needle sewing machine in which a plurality of sewing arms 1 are arranged in parallel with a table 2. A common horizontal shaft 4 penetrating in a lateral direction through a hollow cylindrical bracket 3 detachably provided at the rear end of each sewing machine arm 1 is rotationally driven by one drive motor 5, and transmitted via a transmission mechanism in each bracket 3. Power is transmitted to the upper shafts 6 arranged in the respective sewing machine arms 1.
【0008】なお、テーブル2上には、被縫製物である
布(図示せず)を挟持する布押え枠体(図示せず)を配
置し、該布押え枠体はXモータとX方向移動機構及びY
モータとY方向移動機構により所定のXY方向に間欠的
に移動させられるものである。また、刺繍のパターンに
基づいて図示しない制御手段が、前記Xモータ及びYモ
ータの正逆回転の間欠的作動を制御する。On the table 2, a cloth presser frame (not shown) for holding a cloth (not shown) to be sewn is arranged, and the cloth presser frame moves with the X motor in the X direction. Mechanism and Y
It is intermittently moved in a predetermined XY direction by a motor and a Y-direction moving mechanism. Further, control means (not shown) controls the intermittent operation of the X motor and the Y motor in the forward and reverse rotations based on the embroidery pattern.
【0009】前記各ミシンアーム1の基部(後部)内に
おいて、傘歯車対及び縦軸を介して上軸6からベッド2
a下方に位置する下軸(図示せず)に動力伝達され、同
じく図示しない周知の構造の釜を回転させる。各ミシン
アーム1の先端である中空状、且つ前面開放状のミシン
ヘッド1aの前面には、正面視矩形枠状のスライドケー
ス7が横移動可能に支持され、該スライドケース7の下
ガイド部7aと上下中途位置に形成された上ガイド部7
bとには、横一列状に配置した多数本(実施例では12
本)の針棒9の下部と上下中途部とが上下摺動自在に支
持され、各針棒9の下端には縫針8が取付いている(図
3,図4参照)。In the base (rear part) of each sewing machine arm 1, the bed 2 is moved from the upper shaft 6 via the bevel gear pair and the vertical shaft.
(a) Power is transmitted to a lower shaft (not shown) located below and rotates a shuttle (not shown) having a known structure. A rectangular frame-shaped slide case 7 as viewed from the front is supported movably on the front surface of a hollow and open front sewing machine head 1a which is the tip of each sewing machine arm 1, and a lower guide portion 7a of the slide case 7 is provided. And the upper guide portion 7 formed in the middle position in the vertical direction
b is a large number (12 in this embodiment) arranged in a horizontal line.
The lower part of the needle bar 9 and the middle part of the needle bar 9 are vertically slidably supported, and a sewing needle 8 is attached to the lower end of each needle bar 9 (see FIGS. 3 and 4).
【0010】次に、図4及び図5を参照しながら、スラ
イドケース7の横移動により選択された一本の針棒9及
び天秤10を上下駆動するための駆動機構について説明
する。スライドケース7内の上部側には、前記各針棒9
に対応して横一列状に配置した天秤10が横軸11に上
下回動可能に支持され、且つ、各天秤10は付勢ばね1
8により上向き位置にセットされている。図5に示すよ
うに、ミシンヘッド1a内の上軸6の先端に取付けられ
ている天秤駆動カム12のカム溝12aに従動カム13
を摺動自在に嵌合させ、該従動カム13が取付けられて
いる揺動アーム14は回動軸15に一体的に回動するよ
うに固定されている。そして、上軸6の回転により、回
動軸15を適宜角度だけ往復回動させる。この回動軸1
5に固定されている扇型の駆動ギヤ16は、スライドケ
ース7の横移動により縫製位置に来た天秤10に設けら
れた扇型の従動ギヤ17と選択的に噛み合い、その天秤
10のみを上下揺動させる。Next, with reference to FIGS. 4 and 5, a description will be given of a drive mechanism for vertically driving one needle bar 9 and balance 10 selected by the lateral movement of the slide case 7. FIG. On the upper side in the slide case 7, the needle bars 9
The balances 10 arranged in a row in a horizontal direction are supported by a horizontal shaft 11 so as to be vertically rotatable, and each balance 10 is provided with an urging spring 1.
8 is set to the upward position. As shown in FIG. 5, the driven cam 13 is driven by a cam groove 12a of a balance driving cam 12 attached to the tip of the upper shaft 6 in the sewing head 1a.
Are slidably fitted to each other, and a swing arm 14 to which the driven cam 13 is attached is fixed so as to rotate integrally with a rotation shaft 15. Then, the rotation of the upper shaft 6 causes the rotation shaft 15 to reciprocate by an appropriate angle. This rotating shaft 1
The fan-shaped drive gear 16 fixed to 5 selectively meshes with a fan-shaped driven gear 17 provided on the balance 10 at the sewing position due to the lateral movement of the slide case 7, and moves only the balance 10 up and down. Rock it.
【0011】前記各針棒9に固定された針棒抱き19と
スライドケース7の下ガイド部7aとの間には、コイル
バネ20を被嵌して各針棒9を上昇位置にセットしてあ
り、前記天秤駆動カム12の先端に偏心して取付けられ
たコネクティングロッド21を介してガイド軸22に上
下動可能、且つ回動可能に装着された針棒接続体23を
昇降駆動し、この針棒接続体23の係合溝24に対し
て、縫製位置の針棒9に固定された針棒抱き19の係合
ピン25を選択的に係合させて当該箇所の針棒9のみを
縫製状態に昇降駆動する。A coil spring 20 is fitted between the needle bar holder 19 fixed to each of the needle bars 9 and the lower guide portion 7a of the slide case 7 to set each of the needle bars 9 at the raised position. A needle bar connector 23, which is vertically movable and rotatably mounted on a guide shaft 22 via a connecting rod 21 eccentrically attached to the tip of the balance drive cam 12, is driven to move up and down. The engagement pin 25 of the needle bar holder 19 fixed to the needle bar 9 at the sewing position is selectively engaged with the engagement groove 24 of the body 23, and only the needle bar 9 at that position is raised and lowered to the sewing state. Drive.
【0012】なお、図3及び図4に示すように、スライ
ドケース7の前面を覆うカバー板27に穿設した縦孔2
6から前記各天秤10の先端が突出するように構成され
ている。また、図2に示すように、糸調子台30の前面
には、供給台(図示せず)から供給される色の異なる上
糸Fをそれぞれ案内するガイド部31、糸切れを検出す
るための回転体32、上糸Fに張力を付与する糸調子3
3等が設けられ、このようにして糸調子台30側から供
給された上糸Fは、天秤10を介して所定の針棒9下端
に装着された縫針8に挿通されている。As shown in FIGS. 3 and 4, a vertical hole 2 formed in a cover plate 27 covering the front surface of the slide case 7 is provided.
The balance 6 is configured so that the tip of each balance 10 protrudes. As shown in FIG. 2, a guide portion 31 for guiding the upper thread F of a different color supplied from a supply table (not shown) is provided on the front surface of the thread tension table 30 to detect a thread break. Rotating body 32, thread tension 3 for applying tension to upper thread F
The upper thread F supplied from the thread tension table 30 side is inserted through the balance 10 into the sewing needle 8 attached to the lower end of the predetermined needle bar 9.
【0013】このように構成したことにより、選択され
ない針棒9は前記コイルバネ20の上向き付勢力にて、
針棒抱き19の上面が上ガイド部7bの下面に当接する
最大上昇位置に保持されている。そして、縫製作業にあ
たって、スライドケース7を横移動させると、図示しな
い連動機構により針棒接続体23がガイド軸22に沿っ
て上昇する。この上昇時に、該針棒接続体23における
傾斜面23aに針棒抱き19における係合ピン25が当
接すると、針棒接続体23は、図示しない内蔵された捩
じりバネの付勢力に抗して図5において矢印A方向に回
動しつつ上昇し、前記係合ピン25が針棒接続体23に
おける係合溝24位置に来ると、前記捩じりばねの力に
より針棒接続体23が反矢印A方向に回動して係合溝2
4に係合ピン25が嵌まる。With such a configuration, the unselected needle bar 9 is moved upward by the upward biasing force of the coil spring 20.
The upper surface of the needle bar holder 19 is held at the maximum ascending position where it comes into contact with the lower surface of the upper guide portion 7b. When the slide case 7 is moved laterally in the sewing operation, the needle bar connector 23 is moved up along the guide shaft 22 by an interlocking mechanism (not shown). When the engaging pin 25 of the needle bar holder 19 comes into contact with the inclined surface 23a of the needle bar connector 23 during this ascent, the needle bar connector 23 resists the urging force of a built-in torsion spring (not shown). When the engagement pin 25 reaches the position of the engagement groove 24 in the needle bar connector 23, the needle bar connector 23 is rotated by the force of the torsion spring. Is rotated in the direction of the arrow A to engage the groove 2
The engagement pin 25 fits into the pin 4.
【0014】このようにして選択された針棒9は、上軸
6の所定の回転により上下動する。これに同期して選択
された天秤10は前述の天秤駆動カム12、従動カム1
3、揺動アーム14、回動軸15、駆動ギヤ16及び従
動ギヤ17等の駆動機構により上下揺動させられ、縫製
作業が実行される。なお、本発明は単頭式の多針ミシン
にも適用できることはいうまでもなく、また、針棒9の
上下駆動機構や天秤10の駆動機構は他の公知の形態で
あっても良い。The needle bar 9 thus selected moves up and down by a predetermined rotation of the upper shaft 6. The balance 10 selected in synchronization with this is the balance driving cam 12 and the driven cam 1 described above.
3, the swinging arm 14, the rotating shaft 15, the driving gear 16, the driven gear 17, and the like are swung up and down to perform the sewing operation. Needless to say, the present invention can be applied to a single-head type multi-needle sewing machine, and the drive mechanism of the needle bar 9 up and down and the balance 10 may have other known forms.
【0015】[0015]
【発明の作用・効果】以上詳述したように、本発明の多
針ミシンにおける針棒保持装置によれば、ミシンヘッド
の前面に対して左右摺動可能に装着したスライドケース
に、複数本の針棒とこれに対応する天秤とを一定間隔に
て配置し、ミシンヘッドには、スライドケースの左右移
動にて選択された一本の針棒と天秤とを上下駆動する駆
動機構を設け、前記スライドケースには、前記各針棒の
上下中途部を上下摺動自在に案内する上下一対のガイド
部を備え、各針棒に取付けられた針棒抱きを、前記上下
対のガイド部の間に位置させる一方、前記各針棒に被嵌
して上向き付勢するコイルバネを、当該針棒抱きと下ガ
イド部の上面との間に配置したものであるから、各針棒
の長さは、下降した状態の当該針棒の上端が前記上ガイ
ド部の箇所に位置する程度の短いもので良いことにな
り、針棒の長さを短くできることにより、スライドケー
スの高さ寸法、ひいてはミシンヘッド部分の高さを短く
してコンパクトに形成できるという効果を奏する。As described in detail above, according to the needle bar holding device of the multi-needle sewing machine of the present invention, a plurality of slide cases are mounted on a slide case which is slidably mounted on the front surface of the sewing machine head. The needle bar and the balance corresponding thereto are arranged at regular intervals, and the sewing machine head is provided with a drive mechanism for vertically driving one needle bar and the balance selected by moving the slide case left and right, and The slide case is provided with a pair of upper and lower guides that guide the upper and lower intermediate portions of each of the needle bars slidably up and down, and a needle bar holder attached to each of the needle bars is interposed between the upper and lower pairs of guides. On the other hand, since the coil springs that are fitted on the respective needle bars and urge upwardly are arranged between the needle bar holder and the upper surface of the lower guide portion, the length of each needle bar decreases. The upper end of the needle bar is in the position of the upper guide section It will be good but the degree of short that exhibits the ability to shorten the length of the needle bar, the height of the slide case, an effect of forming a compact by thus shortening the height of the machine head portion.
【0016】また、各針棒に被嵌するコイルバネの上端
は、針棒に取付けられた針部抱きの下面に当接するの
で、この針部抱きがコイルバネ上端の係止部の役割をも
果たすことができる。従って、本発明に従えば、従来の
ように針棒の上端にバネ受け等の鍔状のものを形成した
り、取付けする必要がなく、針棒の構造が極めて簡単に
できるので、製造コストを大幅に低減できるという顕著
な効果を奏するのである。Further, since the upper end of the coil spring fitted on each needle bar contacts the lower surface of the needle holder attached to the needle bar, the needle holder also serves as a locking portion of the upper end of the coil spring. Can be. Therefore, according to the present invention, there is no need to form or attach a flange-shaped member such as a spring receiver on the upper end of the needle bar as in the related art, and the structure of the needle bar can be extremely simplified, so that the manufacturing cost can be reduced. This has a remarkable effect that it can be greatly reduced.
【図1】多頭多針ミシンの概略平面図である。FIG. 1 is a schematic plan view of a multi-head, multi-needle sewing machine.
【図2】多針ミシンの一部切欠き側面図である。FIG. 2 is a partially cutaway side view of the multi-needle sewing machine.
【図3】多針ミシンの正面図である。FIG. 3 is a front view of the multi-needle sewing machine.
【図4】図3のIV−IV線矢視要部側断面図である。FIG. 4 is a side sectional view taken along line IV-IV of FIG. 3;
【図5】針棒及び天秤の駆動機構の斜視図である。FIG. 5 is a perspective view of a drive mechanism of the needle bar and the balance.
1 ミシンアーム 1a ミシンヘッド 2a ベッド 7 スライドケース 7a 下ガイド部 7b 上ガイド部 8 縫針 9 針棒 10 天秤 F 上糸 19 針棒抱き 20 コイルバネ 23 針棒接続体 DESCRIPTION OF SYMBOLS 1 Sewing arm 1a Sewing head 2a Bed 7 Slide case 7a Lower guide part 7b Upper guide part 8 Sewing needle 9 Needle bar 10 Balance F Upper thread 19 Needle bar holder 20 Coil spring 23 Needle bar connector
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平4−96788(JP,A) 特開 昭63−73988(JP,A) 実開 昭51−4549(JP,U) 特許2752453(JP,B2) 特公 平3−34958(JP,B2) (58)調査した分野(Int.Cl.7,DB名) D05B 55/00 - 55/16 D05C 11/06 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-96788 (JP, A) JP-A-63-73988 (JP, A) JP-A-51-4549 (JP, U) Patent 2752453 (JP, A B2) Tokiko Hei 3-34958 (JP, B2) (58) Fields studied (Int. Cl. 7 , DB name) D05B 55/00-55/16 D05C 11/06
Claims (1)
能に装着したスライドケースに、複数本の針棒とこれに
対応する天秤とを一定間隔にて配置し、ミシンヘッドに
は、スライドケースの左右移動にて選択された一本の針
棒と天秤とを上下駆動する駆動機構を設けてなる多針ミ
シンにおいて、前記スライドケースには、前記各針棒の
上下中途部を上下摺動自在に案内する上下一対のガイド
部を備え、各針棒に取付けられた針棒抱きを、前記上下
対のガイド部の間に位置させる一方、前記各針棒に被嵌
して上向き付勢するコイルバネを、当該針棒抱きと下ガ
イド部の上面との間に配置したことを特徴とする多針ミ
シンにおける針棒保持装置。1. A plurality of needle bars and a balance corresponding thereto are arranged at regular intervals in a slide case mounted to be slidable left and right with respect to the front surface of a sewing machine head. In the multi-needle sewing machine provided with a drive mechanism for vertically driving one of the needle bars and the balance selected by the left and right movement of the needle bar, the slide case is provided with a vertically movable part of each of the needle bars which is vertically slidable. A pair of upper and lower guide portions for guiding the needle bar, and a needle bar hanger attached to each needle bar is positioned between the upper and lower pair of guide portions, and a coil spring that is fitted on each of the needle bars and urges upward. Is disposed between the needle bar holder and the upper surface of the lower guide portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04282037A JP3118990B2 (en) | 1992-10-20 | 1992-10-20 | Needle bar holding device in multi-needle sewing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04282037A JP3118990B2 (en) | 1992-10-20 | 1992-10-20 | Needle bar holding device in multi-needle sewing machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06126063A JPH06126063A (en) | 1994-05-10 |
JP3118990B2 true JP3118990B2 (en) | 2000-12-18 |
Family
ID=17647355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP04282037A Expired - Fee Related JP3118990B2 (en) | 1992-10-20 | 1992-10-20 | Needle bar holding device in multi-needle sewing machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3118990B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112411043B (en) * | 2020-10-15 | 2022-04-12 | 诸暨玛雅电器机械有限公司 | Needle bar self-locking mechanism |
-
1992
- 1992-10-20 JP JP04282037A patent/JP3118990B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH06126063A (en) | 1994-05-10 |
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