JP4063411B2 - Multi-needle embroidery sewing machine upper thread stocker - Google Patents

Multi-needle embroidery sewing machine upper thread stocker Download PDF

Info

Publication number
JP4063411B2
JP4063411B2 JP22871298A JP22871298A JP4063411B2 JP 4063411 B2 JP4063411 B2 JP 4063411B2 JP 22871298 A JP22871298 A JP 22871298A JP 22871298 A JP22871298 A JP 22871298A JP 4063411 B2 JP4063411 B2 JP 4063411B2
Authority
JP
Japan
Prior art keywords
thread
upper thread
needle
stocker
vicinity
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
Application number
JP22871298A
Other languages
Japanese (ja)
Other versions
JP2000042280A (en
Inventor
欽也 愛敬
秀雄 大黒
Original Assignee
株式会社バルダン
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 株式会社バルダン filed Critical 株式会社バルダン
Priority to JP22871298A priority Critical patent/JP4063411B2/en
Publication of JP2000042280A publication Critical patent/JP2000042280A/en
Application granted granted Critical
Publication of JP4063411B2 publication Critical patent/JP4063411B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Sewing Machines And Sewing (AREA)

Description

【0001】
【発明の属する技術分野】
この発明は、複数本の針を備えた刺繍ヘッドの糸保持エプロンに設けられる上糸ストッカに関するものである。
【0002】
【従来の技術】
多針刺繍ミシンにおいては、図5に示すように、刺繍ヘッド51の複数本(図示例では9本)の針52にそれぞれ上糸53を通してから、各上糸53の端部付近53aを糸保持エプロン54の両端部に設けられた二つの上糸ストッカ55にまとめて係止させてストックしておき、それからミシンを作動させ、複数本の針52から選択される1本の針52を縫製位置Aに配置して刺繍縫いを行なわせるようにしている。これは、まだ一度も前記縫製位置Aに配置されていない(刺繍縫いを開始していない)針52に通っている上糸53が加工布(図示略)の上に垂れていると、その垂れた上糸が、前記縫製位置Aに配置された針によって加工布に縫込まれてしまうので、その縫込みを防ぐためである。
【0003】
一度縫製位置Aに配置された針52については、その針52が刺繍縫いを開始したときに、その針52に通っている上糸53が引っ張られて端部付近53aが上糸ストッカ55から抜け外れる。そして、その針52が刺繍縫いを休止したときに、その針52に通っている上糸53が釜の近傍の糸切断装置(図示略)で切断され、該上糸53が針52の後方の上糸はらい装置(図示略)で針52の後方へはらい上げられ、該上糸53の切断端部付近が針52の後方の上糸保持具(図示略)で保持されるため、該上糸53を再び上糸ストッカ55に係止させる必要は無くなる。
【0004】
従来の上糸ストッカ55は、図6に示すように、糸保持エプロン54の前壁に螺着された支持ネジ56と、該支持ネジ56の頭部に係止された座皿57と、該支持ネジ56の軸部に変位可能に通された押え皿58と、座皿57と押え皿58との間に圧縮状態で介装されて押え皿58を糸保持エプロン54の前壁側へ付勢する付勢バネ59とからなり、押え皿58と糸保持エプロン54の前面との間で上糸53の端部付近53aを挟持してストックするようになっている。
【0005】
なお、図6に示すように、糸保持エプロン54の前壁には、針52と同数だけ設けられた糸つかみ装置の駆動ピン60の前端面が現れている。その前端面は、駆動ピン60の後退時(糸つかみ時)に糸保持エプロン54の前面と略面一になり(縫製位置A以外のものを参照)、駆動ピン60の前進時(糸つかみ解除時)に糸保持エプロン54の前面より前方へ突出する(縫製位置Aのものを参照)。
【0006】
【発明が解決しようとする課題】
ところが、一つの上糸ストッカ55に複数本(図示例では4〜5本)の上糸53の端部付近53aをまとめて挟持するようにしていたため、図5に二つの長い矢印で示すように、縫製位置Aに配置された針52に通っている上糸53の端部付近53aが上糸ストッカ55から抜け外れるときに、他の針52(図示例では縫製位置Aの隣り)に通っている他の上糸53の端部付近53aも、摩擦等で一緒に上糸ストッカ55から抜け外れて脱落することがあり、後者の上糸53について上記縫込みが発生していた。
【0007】
また、上記のように縫製位置Aの上糸53が抜け外れるときに、他の上糸53が抜け外れないまでも緩んで針52の下方へループを作ることがある。その場合、図示例のように布押え61を縫製位置Aに1本だけ設けて針52とは独立して駆動する高速タイプのミシンでは、刺繍ヘッド51が回動して縫製位置Aに配置される針52が変わるとき(色換え時)に、緩んだ他の上糸53のループが該回動により布押え61に引っ掛かることがある。そうなると、その上糸53は、結局、上糸ストッカ55から抜け外れて脱落し、該上糸53について上記縫込みが発生していた。
【0008】
そこで、本発明の目的は、縫製位置に配置された針に通っている上糸の端部付近が上糸ストッカから抜け外れるときに、確実にその上糸のみが抜け外れるようにし、他の針に通っている上糸が一緒に抜け外れたり緩んだりする不具合を防止することができる多針刺繍ミシンの上糸ストッカを提供することにある。
【0009】
【課題を解決するための手段】
本発明では、複数本の針を備えた刺繍ヘッドの糸保持エプロンに設けられ、各針が刺繍縫いを開始する前に各針に通っている上糸が加工布の上へ垂れないように該上糸の端部付近を係止してストックする上糸ストッカにおいて、糸保持エプロンの内部に設けられている前記針と同数の糸つかみ装置を利用し、各糸つかみ装置の可動つかみ片と共に前進及び後退する駆動ピンの前端に、糸保持エプロンの前面との間で上糸の端部付近を挟持してストックする押え体を取付けたことを特徴としている。
【0010】
ここで、駆動ピンが後退して、可動つかみ片が糸つかみ装置の固定つかみ片との間で上糸の途中部を挟持したとき、押え体が糸保持エプロンの前面との間で上糸の端部付近を挟持し、また、駆動ピンが前進して、可動つかみ片が前記上糸の途中部の挟持を解放したとき、押え体が前記上糸の端部付近の挟持を解放するように、押え体の取付位置を調整することが好ましい。
【0011】
【発明の実施の形態】
以下、この発明を具体化した高速タイプの多針刺繍ミシンの一実施形態を図1〜図4に基づいて説明する。多針刺繍ミシンの刺繍ヘッド1には複数本の針棒4が円周方向に等間隔をおいて上下動可能に配列され、各針棒4には針5が取付けられている。刺繍ヘッド1の回動によって、複数本の針5から選択された1本の針5が、縫製位置Aに配置され駆動されるようになっている。一方、縫製位置Aには布押え6が1本だけ設けられ、縫製位置Aに配置された針5とは独立して駆動されるようになっている。刺繍ヘッド1の前面には糸保持エプロン7が装着され、該糸保持エプロン7には各針5に通された上糸8を必要時につかむ糸つかみ装置10が、針5等と同数だけ各針5に対応した位置に設けられている。
【0012】
各糸つかみ装置10は、糸保持エプロン7の前壁及び後壁を貫通して前進及び後退する駆動ピン11と、糸保持エプロン7の内部において駆動ピン11にネジ12で取付けられて共に前進及び後退する可動つかみ片13と、糸保持エプロン7の内部において糸保持エプロン7の上壁にネジ14で取付けられた固定つかみ片15と、糸保持エプロン7の前壁と可動つかみ片13との間に介装されて可動つかみ片13を固定つかみ片15に押し当てる方向に付勢する付勢バネ16とからなる。各駆動ピン11の後端は、糸保持エプロン7より後方へ大きく突出している。刺繍ヘッド1には、縫製位置Aに配置された針5に対応する糸つかみ装置10の駆動ピン11の後端を、必要時に付勢バネ16に抗して前方へ押圧するためのピン押圧装置17が設けられている。
【0013】
本実施形態の上糸ストッカ20は、前記針5等と同数の糸つかみ装置10を利用し、各糸つかみ装置10の駆動ピン11の前端に、糸保持エプロン7の前面との間で上糸8の端部付近8aを挟持してストックする押え体21を取付けてなる。詳しくは、駆動ピン11の前端を、駆動ピン11の前進時(糸つかみ解除時)のみならず、駆動ピン11の後退時(糸つかみ時)にも、糸保持エプロン7の前面より前方へ突出するように設け、その前端に押え体21を取付けている。押え体21は、樹脂、金属等により皿状(又はボタン状)に形成されている。
【0014】
詳しくは、駆動ピン11が後退して、可動つかみ片13が固定つかみ片15との間で上糸8の途中部8bを挟持したとき、押え体21が糸保持エプロン7の前面との間で上糸8の端部付近8aを挟持し、また、駆動ピン11が前進して、可動つかみ片13が前記上糸8の途中部8bの挟持を解放したとき、押え体21が前記上糸8の端部付近8aの挟持を解放するように、駆動ピン11の前端における押え体21の取付位置が調整されている。
【0015】
その他、刺繍ヘッド1には、各針5の下端部前方に位置して、各上糸8を下からくぐらせて掛けるための糸掛け枠24が取付けられている。また、図示は省略するが、周知の通り、刺繍ヘッド1の下方に設けられたベッドの上では、加工布を展張した刺繍枠が駆動装置によって水平面内で前後左右に駆動されるようになっている。そのベッドには針板が設けられ、該針板の下側には糸切断装置及び釜が配設されている。そして、刺繍ヘッド1の回動に伴い複数本の針5から選択された1本の針5を縫製位置Aに配置し、該縫製位置Aの針5と釜との協働により、加工布に刺繍縫いを行なうようになっている。
【0016】
以上のように構成された多針刺繍ミシン及びその上糸ストッカ20は、次のように使用される。
【0017】
(1)まず、1本の針5を縫製位置Aに配置し、その針5に対応する糸つかみ装置10の駆動ピン11をピン押圧装置17で押圧して前進させ、該糸つかみ装置10の可動つかみ片13と固定つかみ片15との間を開けるとともに、上糸ストッカ20の押え体21と糸保持エプロン7との間を開ける。
上糸8を、糸巻から糸調子皿、天秤(いずれも図示略)等を経て、糸保持エプロン7内の可動つかみ片13と固定つかみ片15との間に挿通してから、縫製位置Aの針5に通し、さらに糸掛け枠24にくぐらせて掛け、上糸8の端部付近8aを押え体21と糸保持エプロン7の前面との間に掛ける。そして、図3に示すように、ピン押圧装置17を退避させて付勢バネ16により駆動ピン11を後退させ、上糸8の途中部8bを可動つかみ片13と固定つかみ片15との間に挟持させるとともに、上糸8の端部付近8aを押え体21と糸保持エプロン7の前面との間に挟持させてストックする。
続いて、刺繍ヘッド1を順次回動させて他の針5を次々に縫製位置Aに配置し、上記と同様に、各上糸8を各針5に対応する糸つかみ装置10等に通し、途中部8bを糸つかみ装置10に挟持させるとともに、端部付近8aを対応する上糸ストッカ20に挟持させてストックする。
【0018】
(2)ミシンを作動させ、図1及び図4に示すように、複数本の針5から選択される1本の針5を縫製位置Aに配置して刺繍縫いを行なわせる。その針5が刺繍縫いを開始するとき、ピン押圧装置17がその針5に対応する糸つかみ装置10の駆動ピン11を押圧して前進させるので、可動つかみ片13が前記途中部8bの挟持を解放し、糸巻からの上糸8の供給を可能にする。同時に、押え体21が前記端部付近8aの挟持を解放し、該端部付近8aが上糸ストッカ20から容易に抜け外れる。
このとき、一つの上糸ストッカ20には1本の上糸8の端部付近8aしか挟持されていないので、その端部付近8aが上糸ストッカ20から抜け外れても、他の針5に通っている他の上糸8に全く干渉しない。従って、他の上糸8が一緒に抜け外れて脱落することはないし(加工布に縫込まれない)、緩むことすらない(針5の下方へループを作らない)。
【0019】
(3)縫製位置Aに配置された針5が刺繍縫いを休止したとき、糸つかみ装置10が上糸8の途中部8bを挟持し、その針5に通っている上糸8が釜の近傍の糸切断装置(図示略)で切断される。その上糸8が針5の後方の上糸はらい装置(図示略)で針5の後方へはらい上げられ、該上糸8の切断端部付近が針5の後方の上糸保持具25(図4参照)で保持されるため、該上糸8を再び上糸ストッカ20に係止させる必要は無くなる。
【0020】
(4)刺繍ヘッド1が回動して縫製位置Aに配置される針5が変わるとき(色換え時)、全部の針5及び上糸8が共に回動する一方、布押え6は縫製位置Aに止まっている。
このとき、上記(2)の通り、各上糸8が針5の下方へループを作っていないので、各上糸8が布押え6に引っ掛かって上糸ストッカ55から抜け外れるという不具合が発生しない。
【0021】
なお、この発明は上記実施態様に限定されるものではなく、例えば次のように変更して実施することも可能である。
(1)押え体21の材質や形状を変更すること。
(2)駆動ピン11の前端に雄ネジを形成し、押え体21に雌ネジを形成し、両者を位置調整可能に螺合させること。
(3)布押え6を各針棒4に設けて針5とともに駆動する一般タイプの刺繍ミシンに具体化すること。
【0022】
【発明の効果】
以上詳述したように、本発明に係る多針刺繍ミシンの上糸ストッカによれば、縫製位置に配置された針に通っている上糸の端部付近が上糸ストッカから抜け外れるときに、確実にその上糸のみが抜け外れるようにし、他の針に通っている上糸が一緒に抜け外れたり緩んだりする不具合を防止することができる。
【図面の簡単な説明】
【図1】本発明の実施態様に係る多針刺繍ミシン及びその上糸ストッカを示す斜視図である。
【図2】同多針刺繍ミシンの糸保持エプロン、糸つかみ装置及び上糸ストッカを下方から見た図である。
【図3】同糸つかみ装置及び上糸ストッカによる上糸の挟持時を示す断面図である。
【図4】同糸つかみ装置及び上糸ストッカによる上糸の挟持解放時を示す断面図である。
【図5】従来例に係る多針刺繍ミシン及びその上糸ストッカを示す斜視図である。
【図6】同上糸ストッカの断面図である。
【符号の説明】
1 刺繍ヘッド
5 針
7 糸保持エプロン
8 上糸
8a 端部付近
8b 途中部
10 糸つかみ装置
11 駆動ピン
13 可動つかみ片
15 固定つかみ片
20 上糸ストッカ
21 押え体
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an upper thread stocker provided in a thread holding apron of an embroidery head having a plurality of needles.
[0002]
[Prior art]
In the multi-needle embroidery sewing machine, as shown in FIG. 5, the upper thread 53 is passed through a plurality of needles 52 (9 in the illustrated example) of the embroidery head 51, and the vicinity of the end 53a of each upper thread 53 is held by the thread. The two needle thread stockers 55 provided at both ends of the apron 54 are collectively locked and stocked, and then the sewing machine is operated, and one needle 52 selected from the plurality of needles 52 is sewn. It is arranged in A so that embroidery sewing is performed. This is because, when an upper thread 53 passing through a needle 52 that has not yet been arranged at the sewing position A (the embroidery sewing has not started) hangs down on a work cloth (not shown), the sag occurs. This is because the upper thread is sewn into the work cloth by the needle disposed at the sewing position A, so that the sewing is prevented.
[0003]
With respect to the needle 52 once arranged at the sewing position A, when the needle 52 starts embroidery sewing, the upper thread 53 passing through the needle 52 is pulled, and the vicinity of the end 53 a comes out of the upper thread stocker 55. Come off. When the needle 52 stops embroidery sewing, the upper thread 53 passing through the needle 52 is cut by a thread cutting device (not shown) in the vicinity of the shuttle, and the upper thread 53 is moved behind the needle 52. The upper thread is pulled up backward by the needle thread removing device (not shown), and the vicinity of the cut end of the upper thread 53 is held by the upper thread holder (not shown) behind the needle 52. There is no need to lock 53 to the upper thread stocker 55 again.
[0004]
As shown in FIG. 6, the conventional upper thread stocker 55 includes a support screw 56 screwed onto the front wall of the thread holding apron 54, a seat plate 57 locked to the head of the support screw 56, A presser plate 58 that is displaceably passed through the shaft portion of the support screw 56, and a presser plate 58 that is interposed between the seat plate 57 and the presser plate 58 in a compressed state, is attached to the front wall side of the thread holding apron 54. An urging spring 59 is urged, and the end portion 53a of the upper thread 53 is sandwiched between the press plate 58 and the front surface of the thread holding apron 54 to be stocked.
[0005]
As shown in FIG. 6, the front end surface of the drive pin 60 of the thread clamp device provided in the same number as the needle 52 appears on the front wall of the thread holding apron 54. The front end surface is substantially flush with the front surface of the thread holding apron 54 when the drive pin 60 is retracted (when the thread is clamped) (see other than the sewing position A), and when the drive pin 60 moves forward (the thread clamp is released). Projecting forward from the front surface of the thread holding apron 54 (see the sewing position A).
[0006]
[Problems to be solved by the invention]
However, since a plurality of pieces (4 to 5 in the illustrated example) of the vicinity of the end 53a of the upper thread 53 are held together in one upper thread stocker 55, as shown by two long arrows in FIG. When the vicinity 53a of the upper thread 53 passing through the needle 52 arranged at the sewing position A comes off the upper thread stocker 55, it passes through the other needle 52 (next to the sewing position A in the illustrated example). Also, the vicinity of the end 53a of the other upper thread 53 may come off from the upper thread stocker 55 together due to friction or the like and fall off.
[0007]
Further, when the upper thread 53 of the sewing position A comes off as described above, it may loosen and make a loop below the needle 52 until the other upper thread 53 does not come off. In that case, in a high-speed type sewing machine in which only one presser foot 61 is provided at the sewing position A and driven independently from the needle 52 as shown in the drawing, the embroidery head 51 rotates and is arranged at the sewing position A. When the needle 52 changes (when the color is changed), the loop of the other loose upper thread 53 may be caught on the presser foot 61 by the rotation. As a result, the upper thread 53 eventually slips off from the upper thread stocker 55 and falls off, and the above-described sewing has occurred on the upper thread 53.
[0008]
Accordingly, an object of the present invention is to ensure that when the vicinity of the end of the upper thread passing through the needle arranged at the sewing position comes off the upper thread stocker, only the upper thread is surely removed, It is an object of the present invention to provide an upper thread stocker for a multi-needle embroidery sewing machine capable of preventing a problem that an upper thread passing through a needle is detached or loosened together.
[0009]
[Means for Solving the Problems]
In the present invention, an upper thread that is provided on a thread holding apron of an embroidery head having a plurality of needles and passes through each needle before each needle starts embroidery sewing is prevented from hanging onto the work cloth. In the upper thread stocker that locks and stocks the vicinity of the end of the upper thread, it uses the same number of thread gripping devices as the needles provided inside the thread holding apron and moves forward together with the movable gripping pieces of each thread gripping device And the presser body which clamps and stocks the vicinity of the end part of the upper thread between the front end of the thread holding apron and the front end of the retreating drive pin is characterized.
[0010]
Here, when the drive pin moves backward and the movable gripping piece clamps the middle part of the upper thread with the fixed gripping piece of the thread gripping device, the presser body moves between the front of the thread holding apron and the upper thread. When holding the vicinity of the end, and when the drive pin advances and the movable gripping piece releases the intermediate part of the upper thread, the presser body releases the vicinity of the upper part of the upper thread. It is preferable to adjust the mounting position of the presser body.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a high-speed multi-needle embroidery machine embodying the present invention will be described with reference to FIGS. A plurality of needle bars 4 are arranged on the embroidery head 1 of the multi-needle embroidery machine so as to be movable up and down at equal intervals in the circumferential direction. A needle 5 is attached to each needle bar 4. By rotating the embroidery head 1, one needle 5 selected from the plurality of needles 5 is arranged at the sewing position A and driven. On the other hand, only one presser foot 6 is provided at the sewing position A, and is driven independently of the needle 5 arranged at the sewing position A. A thread holding apron 7 is mounted on the front surface of the embroidery head 1, and the thread holding apron 7 has a thread gripping device 10 for grasping an upper thread 8 passed through each needle 5 when necessary, as many as the needle 5 and the like. 5 is provided at a position corresponding to 5.
[0012]
Each thread gripping device 10 has a drive pin 11 that moves forward and backward through the front wall and the rear wall of the thread holding apron 7, and is attached to the drive pin 11 with a screw 12 inside the thread holding apron 7 to advance and retract together. Between the movable gripping piece 13 that moves backward, the fixed gripping piece 15 that is attached to the upper wall of the yarn holding apron 7 with a screw 14 inside the yarn holding apron 7, and the front wall of the yarn holding apron 7 and the movable gripping piece 13. And a biasing spring 16 that biases the movable gripping piece 13 in a direction of pressing the movable gripping piece 13 against the fixed gripping piece 15. The rear end of each drive pin 11 protrudes rearward from the yarn holding apron 7. The embroidery head 1 has a pin pressing device for pressing the rear end of the driving pin 11 of the thread clamp device 10 corresponding to the needle 5 arranged at the sewing position A against the biasing spring 16 when necessary. 17 is provided.
[0013]
The upper thread stocker 20 of this embodiment uses the same number of thread gripping devices 10 as the needles 5 and the like, and the upper thread between the front end of the drive pin 11 of each thread gripping device 10 and the front surface of the thread holding apron 7. A presser body 21 is mounted to sandwich and stock the vicinity 8a of the end 8a. Specifically, the front end of the drive pin 11 protrudes forward from the front surface of the thread holding apron 7 not only when the drive pin 11 moves forward (when the thread clamp is released) but also when the drive pin 11 moves backward (when the thread clamp is released). The presser body 21 is attached to the front end. The presser body 21 is formed in a dish shape (or button shape) from resin, metal, or the like.
[0014]
Specifically, when the drive pin 11 is retracted and the movable gripping piece 13 clamps the middle portion 8 b of the upper thread 8 between the fixed gripping piece 15, the presser body 21 is between the front surface of the thread holding apron 7. When the vicinity of the end 8a of the upper thread 8 is clamped and the drive pin 11 moves forward and the movable gripping piece 13 releases the intermediate part 8b of the upper thread 8, the presser body 21 is moved to the upper thread 8 The attachment position of the presser body 21 at the front end of the drive pin 11 is adjusted so as to release the clamping of the vicinity of the end 8a.
[0015]
In addition, the embroidery head 1 is provided with a thread hooking frame 24 that is positioned in front of the lower end portion of each needle 5 and that hangs each upper thread 8 from below. Although not shown in the drawings, as is well known, on the bed provided below the embroidery head 1, the embroidery frame in which the work cloth is stretched is driven forward, backward, left and right within a horizontal plane by a driving device. Yes. The bed is provided with a needle plate, and a thread cutting device and a shuttle are provided below the needle plate. Then, one needle 5 selected from the plurality of needles 5 is arranged at the sewing position A as the embroidery head 1 rotates, and the work cloth is formed by the cooperation between the needle 5 at the sewing position A and the shuttle. Embroidery stitches are performed.
[0016]
The multi-needle embroidery sewing machine and its upper thread stocker 20 configured as described above are used as follows.
[0017]
(1) First, one needle 5 is arranged at the sewing position A, and the drive pin 11 of the thread clamp device 10 corresponding to the needle 5 is pressed by the pin pressing device 17 to move forward. A gap between the movable gripping piece 13 and the fixed gripping piece 15 is opened, and a gap between the presser body 21 of the upper thread stocker 20 and the thread holding apron 7 is opened.
After the upper thread 8 is inserted between the movable gripping piece 13 and the fixed gripping piece 15 in the thread holding apron 7 from the spool through a thread tension plate, a balance (not shown), etc., the sewing position A The needle thread 5 is passed through the needle 5 and further passed through the thread hanging frame 24, and the vicinity 8 a of the upper thread 8 is hung between the presser body 21 and the front surface of the thread holding apron 7. Then, as shown in FIG. 3, the pin pressing device 17 is retracted and the driving pin 11 is retracted by the urging spring 16, and the middle portion 8 b of the upper thread 8 is interposed between the movable gripping piece 13 and the fixed gripping piece 15. At the same time, the vicinity of the end 8 a of the upper thread 8 is sandwiched between the presser body 21 and the front surface of the thread holding apron 7 to be stocked.
Subsequently, the embroidery head 1 is sequentially rotated to place the other needles 5 one after another at the sewing position A. Similarly to the above, each upper thread 8 is passed through the thread gripping device 10 corresponding to each needle 5, etc. The intermediate portion 8b is clamped by the thread clamp device 10, and the end vicinity 8a is clamped by the corresponding upper thread stocker 20 and stocked.
[0018]
(2) The sewing machine is operated and, as shown in FIGS. 1 and 4, one needle 5 selected from the plurality of needles 5 is arranged at the sewing position A and embroidery sewing is performed. When the needle 5 starts embroidery sewing, the pin pressing device 17 presses the drive pin 11 of the thread gripping device 10 corresponding to the needle 5 to advance, so that the movable gripping piece 13 holds the intermediate portion 8b. To release the upper thread 8 from the spool. At the same time, the presser body 21 releases the holding of the end portion vicinity 8 a, and the end portion vicinity 8 a is easily detached from the upper thread stocker 20.
At this time, since only one upper thread 8 is clamped by the vicinity of the end 8a of one upper thread 8 at this time, even if the vicinity 8a of the end is detached from the upper thread stocker 20, the other needle 5 It does not interfere with the other upper thread 8 that passes through. Therefore, the other upper thread 8 does not come off and fall off together (it is not sewn into the work cloth) and does not loosen (does not make a loop below the needle 5).
[0019]
(3) When the needle 5 arranged at the sewing position A stops embroidery sewing, the thread clamp device 10 holds the middle part 8b of the upper thread 8, and the upper thread 8 passing through the needle 5 is in the vicinity of the shuttle. Is cut by a yarn cutting device (not shown). The upper thread 8 is lifted rearward of the needle 5 by an upper thread removing device (not shown) behind the needle 5, and the upper thread retainer 25 (see FIG. 4), it is not necessary to lock the upper thread 8 on the upper thread stocker 20 again.
[0020]
(4) When the embroidery head 1 rotates and the needle 5 arranged at the sewing position A changes (when changing colors), all the needles 5 and the upper thread 8 rotate together, while the presser foot 6 is at the sewing position. Stops at A.
At this time, since each upper thread 8 does not form a loop below the needle 5 as described in (2) above, there is no problem that each upper thread 8 is caught by the presser foot 6 and comes off from the upper thread stocker 55. .
[0021]
In addition, this invention is not limited to the said embodiment, For example, it can also be changed and implemented as follows.
(1) Changing the material and shape of the presser body 21.
(2) A male screw is formed on the front end of the drive pin 11, a female screw is formed on the presser body 21, and both are screwed together so that the position can be adjusted.
(3) To embody a general type embroidery sewing machine in which the presser foot 6 is provided on each needle bar 4 and driven together with the needle 5
[0022]
【The invention's effect】
As described above in detail, according to the upper thread stocker of the multi-needle embroidery sewing machine according to the present invention, when the vicinity of the upper thread end passing through the needle arranged at the sewing position comes off the upper thread stocker, It is possible to ensure that only the upper thread comes off, and to prevent a problem that the upper thread passing through other needles comes off or loosens together.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a multi-needle embroidery sewing machine and an upper thread stocker according to an embodiment of the present invention.
FIG. 2 is a view of the multi-needle embroidery sewing machine as viewed from below, a thread holding apron, a thread clamp device, and an upper thread stocker.
FIG. 3 is a cross-sectional view showing when the upper thread is clamped by the thread gripping device and the upper thread stocker.
FIG. 4 is a cross-sectional view showing when the upper thread is clamped and released by the thread gripping device and the upper thread stocker.
FIG. 5 is a perspective view showing a multi-needle embroidery sewing machine and its upper thread stocker according to a conventional example.
FIG. 6 is a cross-sectional view of the same yarn stocker.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Embroidery head 5 Needle 7 Thread holding apron 8 Upper thread 8a End vicinity 8b Middle part 10 Thread gripping device 11 Drive pin 13 Movable gripping piece 15 Fixed gripping piece 20 Upper thread stocker 21 Presser

Claims (2)

複数本の針を備えた刺繍ヘッドの糸保持エプロンに設けられ、各針が刺繍縫いを開始する前に各針に通っている上糸が加工布の上へ垂れないように該上糸の端部付近を係止してストックする上糸ストッカにおいて、
前記糸保持エプロンに設けられている前記針と同数の糸つかみ装置を利用し、各糸つかみ装置の可動つかみ片と共に前進及び後退する駆動ピンの前端に、前記糸保持エプロンの前面との間で上糸の端部付近を挟持してストックする押え体を取付けたことを特徴とする多針刺繍ミシンの上糸ストッカ。
The end of the upper thread is provided on the thread holding apron of the embroidery head having a plurality of needles so that the upper thread passing through each needle does not hang onto the work cloth before each needle starts embroidery sewing. In the upper thread stocker that locks and stocks the vicinity of the part,
Using the same number of thread gripping devices as the needles provided on the thread holding apron, between the front end of the thread holding apron and the front end of the drive pin that moves forward and backward together with the movable gripping piece of each thread gripping device An upper thread stocker for a multi-needle embroidery sewing machine having a presser foot that clamps and stocks the vicinity of the upper thread end.
前記駆動ピンが後退して、前記可動つかみ片が前記糸つかみ装置の固定つかみ片との間で上糸の途中部を挟持したとき、前記押え体が前記糸保持エプロンの前面との間で上糸の端部付近を挟持し、また、前記駆動ピンが前進して、前記可動つかみ片が前記上糸の途中部の挟持を解放したとき、前記押え体が前記上糸の端部付近の挟持を解放するように、前記押え体の取付位置を調整した請求項1記載の多針刺繍ミシンの上糸ストッカ。When the drive pin is retracted and the movable gripping piece clamps the middle portion of the upper thread with the fixed gripping piece of the thread gripping device, the presser body is lifted between the front surface of the thread holding apron. When the vicinity of the end of the upper thread is clamped, and when the drive pin moves forward and the movable gripping piece releases the middle part of the upper thread, the presser body clamps near the end of the upper thread. The upper thread stocker of the multi-needle embroidery sewing machine according to claim 1, wherein the attachment position of the presser body is adjusted so as to release the presser.
JP22871298A 1998-07-28 1998-07-28 Multi-needle embroidery sewing machine upper thread stocker Expired - Fee Related JP4063411B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22871298A JP4063411B2 (en) 1998-07-28 1998-07-28 Multi-needle embroidery sewing machine upper thread stocker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22871298A JP4063411B2 (en) 1998-07-28 1998-07-28 Multi-needle embroidery sewing machine upper thread stocker

Publications (2)

Publication Number Publication Date
JP2000042280A JP2000042280A (en) 2000-02-15
JP4063411B2 true JP4063411B2 (en) 2008-03-19

Family

ID=16880639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22871298A Expired - Fee Related JP4063411B2 (en) 1998-07-28 1998-07-28 Multi-needle embroidery sewing machine upper thread stocker

Country Status (1)

Country Link
JP (1) JP4063411B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4276551B2 (en) * 2004-01-29 2009-06-10 東海工業ミシン株式会社 Multi-head sewing machine

Also Published As

Publication number Publication date
JP2000042280A (en) 2000-02-15

Similar Documents

Publication Publication Date Title
WO2017145597A1 (en) Embroidery frame
ITMI20060699A1 (en) GROVIGLIO STORAGE EQUIPMENT AND GROVIGLIO IMPEDIMENT PROCEDURE
JP3318482B2 (en) Method and apparatus for preventing seam fraying
WO2017145598A1 (en) Embroidery frame, embroidery frame unit, and sewing machine
JP3372613B2 (en) Empty stitch machine for chain stitch machine
JP4063411B2 (en) Multi-needle embroidery sewing machine upper thread stocker
JPH04288193A (en) Device for cutting off louper thread in multiple needle chain stitch machine
JP3818380B2 (en) sewing machine
JPH0625960A (en) Device for fixing temporarily yarn to needled fleece
JP3006841B2 (en) Overlock sewing machine for forming multi-thread overlock seams
JP5839853B2 (en) A needle plate that can sew decorative patterns similar to cover stitches and a lockstitch sewing machine equipped with the needle plate
JP2005130900A (en) Button sewing machine and cloth presser thereof
CN218059466U (en) Thread loosening device for sewing machine and sewing machine
JPH09225166A (en) Eyelet hole darning sewing machine
US1221857A (en) Quilting-machine.
JP3287638B2 (en) Sewing machine upholstery device and sewing method
WO2005024109A1 (en) Device to automatically change the thread in a needle in textile machines, relative method and textile machine adopting said thread-change device
JPH0634873B2 (en) Over-lock machine sewing machine
JP2004329483A (en) Needle hole covering member for sewing machine, sewing machine having the member, and method of attaching the member
JPH0739669A (en) Needle thread cutting device for embroidery sewing machine
JPH0838766A (en) Decoration guiding device for sewing machine
JPH1072761A (en) Table device for sticking of cloth piece for applique
KR200160677Y1 (en) Button
JPS6023345Y2 (en) Thread end clamping device for embroidery sewing machines
JPH04317691A (en) Cloth feeding device of sewing machine

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050610

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070827

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070911

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20071211

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20071225

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110111

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140111

Year of fee payment: 6

LAPS Cancellation because of no payment of annual fees