JPS59137095A - Needle yarn feeder of sewing machine - Google Patents
Needle yarn feeder of sewing machineInfo
- Publication number
- JPS59137095A JPS59137095A JP1308383A JP1308383A JPS59137095A JP S59137095 A JPS59137095 A JP S59137095A JP 1308383 A JP1308383 A JP 1308383A JP 1308383 A JP1308383 A JP 1308383A JP S59137095 A JPS59137095 A JP S59137095A
- Authority
- JP
- Japan
- Prior art keywords
- needle thread
- holding means
- thread
- needle
- take
- 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.)
- Granted
Links
Landscapes
- Sewing Machines And Sewing (AREA)
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】
この発明は通電・不通電に関連する電磁作用により針糸
を挾持・解放可能とした二部の保持手段と、両件持手段
間の針糸経路上に配置し天秤に同期して作動する繰出し
体とにより、天秤による針糸緊張時期以外の時期に供給
源側の保持手段にして針糸を挾持し、天秤側の保持手段
をして針糸を解放した状態で針糸経路を増大し針糸を供
給源から画体持手段間に繰込み、所定長さの針糸が繰込
まれることに関連して供給源側の保持手段をして針糸を
挾持し、その後の繰込みを阻止すると共に他方の保持手
段として針糸を解放し、繰込まれた針糸を次の天秤の上
昇に伴なって両保持手段から引出されるようにして、−
縫目形成毎に必要長さの針糸を積極的に供給源から繰出
して天秤へ供給装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a two-part holding means that can hold and release the needle thread by electromagnetic action related to energization and de-energization, and a thread take-up mechanism arranged on the needle thread path between the two holding means. With the feeding body that operates in synchronization with the thread take-up, the needle thread is clamped by the holding means on the supply source side during periods other than the time when the thread take-up is tensioning the needle thread, and the holding means on the take-up side is used to release the needle thread. The needle thread path is increased to feed the needle thread from the supply source to the image holding means, and in connection with the feeding of a predetermined length of the needle thread, the needle thread is held by the holding means on the supply source side. , preventing subsequent retraction and releasing the needle thread as the other holding means, so that the retracted needle thread is pulled out from both holding means as the thread take-up next rises;
The present invention relates to a device for actively feeding a necessary length of needle thread from a supply source to a thread take-up each time a stitch is formed.
この種の針糸供給装置においては、常にいずれか一方の
保持手段が通電される構成なので、電源を入れたまま長
時間ミシンを停止させると通電している一方の保持手段
(ソレノイド)が過熱し、これにより特に化繊系の糸の
品質が低下すると共に、糸の保持力が低下するので繰出
し精度が悪くなり、著しい場合には保持手段が焼損する
事故を発生する欠点があった。In this type of needle thread supply device, one of the holding means is always energized, so if the sewing machine is stopped for a long time with the power on, the holding means (solenoid) that is energized may overheat. As a result, the quality of the synthetic yarn in particular deteriorates, and the holding force of the yarn decreases, resulting in poor payout accuracy and, in severe cases, the holding means may burn out.
この発明は主軸の特定回転角を検出して発生する位置信
号の発生から一定時間経過するまでの間に次の位置信号
が発生しないことに関連して両保持手段への通電を遮断
するようにして上記従来のものの欠点を解消することを
目的とする。In this invention, when a position signal generated by detecting a specific rotation angle of the spindle is not generated until a certain period of time has elapsed from the generation of the position signal, the power supply to both holding means is cut off. The purpose of this invention is to eliminate the drawbacks of the above-mentioned conventional methods.
以下この発明の実施例を図面により説明する。Embodiments of the present invention will be described below with reference to the drawings.
機械部の構成について
ミシンlは駆動源に連動して回転する主軸(図示せず)
と、針糸Tをもつ針2を下端に同定し主軸に連動して上
下動する針棒3と、
針糸供給源としての糸巻4と針2との間の針糸Tを支持
し針糸Tを緊張、弛緩するように主軸に連動して二位置
間を往復動する天秤5とを備えた公知のものであり、主
軸の回転角に対する針棒3と天秤5との関係はwM3図
に示したとおりである。Regarding the configuration of the mechanical part, the sewing machine l has a main shaft (not shown) that rotates in conjunction with the drive source.
, a needle bar 3 which identifies the needle 2 with the needle thread T at its lower end and moves up and down in conjunction with the main shaft; This is a known device that is equipped with a take-up lever 5 that reciprocates between two positions in conjunction with the main shaft so as to tension and relax the needle. As shown.
給−保持手段6及び第二保持手段7は、天秤5と糸巻4
との間の針糸経路上において、糸巻4から天秤5に向う
針糸供給方向の先方と手前に離隔して配置し、それぞれ
が電磁石(第一ソレノイド)8及び電磁石(第二ソレノ
イド)9と、これらの励磁により針糸Tを移動不可能に
挾持し非励磁により針糸Tを移動可能に解放する一対の
保持板10及び11とからなる。The supply-holding means 6 and the second holding means 7 are connected to the balance 5 and the bobbin 4.
The electromagnet (first solenoid) 8 and the electromagnet (second solenoid) 9 are arranged separately at the front and the front in the needle thread supply direction from the bobbin 4 to the thread take-up lever 5 on the needle thread path between the thread take-up and thread take-up. , a pair of holding plates 10 and 11 which immovably clamp the needle thread T when energized and movably release the needle thread T when de-energized.
繰り出し体12は主軸に連動して回動する偏心カム13
に連動して軸14を中心に一定揺動可能とし、その自由
端を両保持手段6.7間の針糸経路に関連配置して、第
3図のように針2がベッド面よりも下方に位置している
時期(下停止区間)に画体持手段6,7間の針糸経路を
増大すると共に、天秤5による針糸緊張時までに最短と
するように針2及び天秤5の動きと関連させる。The feeding body 12 has an eccentric cam 13 that rotates in conjunction with the main shaft.
The free end of the holding means 6 and 7 is arranged in relation to the needle thread path between the two holding means 6 and 7, so that the needle 2 is positioned below the bed surface as shown in FIG. The needle 2 and the thread take-up 5 are moved so as to increase the needle thread path between the image body holding means 6 and 7 during the period when the needle thread is located at the lower stop section (lower stop section), and to minimize the time taken by the thread take-up 5 to tension the needle thread. to relate to.
また回転体15は針糸Tがその経路に沿って移動したと
きにその移動距離に比例して回転可能に画体持手段6,
7間に配置しである。Further, the rotating body 15 is rotatable in proportion to the moving distance when the needle thread T moves along its path.
It is placed between 7.
電気回路について
繰出し検出装置i16は回転体15が一定角度回転する
毎に1箇のパルスを発生する0主軸検出装置117は主
軸又はそれに連動する部体に関連配置し【あり、針2が
ベッド面よりも下方に位置する期間に対応する主軸の特
定回転角を検出して低レベル(以下りとする)の位置信
号を発生する。押え上昇スイッチ18は下端に布押え足
を支持した公知の押え棒の移動経路に関連配置してあり
、適宜の手段により押え棒を特定の位置まで上昇するこ
とに関連して高レベル(以下Hとする)の信号を発生す
る。駆動スインf19はミシン1の駆動回路(図示せず
)にffけられたもので、主軸が停止しているとぎにH
の信号を発生する。Regarding the electric circuit, the feeding detection device i16 generates one pulse every time the rotating body 15 rotates by a certain angle. A specific rotation angle of the main shaft corresponding to a period in which the main shaft is located below is detected to generate a low level (hereinafter referred to as "low") position signal. The presser foot lift switch 18 is disposed in relation to the movement path of a known presser foot supporting a presser foot at its lower end, and is connected to a high level (hereinafter referred to as H) in connection with raising the presser foot to a specific position by appropriate means. ) generates a signal. The drive swing f19 is driven by the drive circuit (not shown) of the sewing machine 1, and when the main shaft is stopped, the H
generates a signal.
カウンタ20は主軸検出装置117からの位it信号に
よりリセットし、繰出し検出装置ieからのパルスを計
数する。設走装[21はダイアルにより設定するデジタ
ル・スイッチからなり、−縫目形成に要する針糸Tの長
さく亜の厚さ、針の振り幅、送りピッチ等の条件により
夜化する)に対応して繰り出すべき針糸Tの長さを設定
するものであり、その設定長さに対応して異なるデジタ
ルコードを発生する。このデジタルコードは繰り出し量
に比例した回転体150回転角度に対応する繰り出し検
出器f1116からのクロックパルスの数に関連させで
ある。The counter 20 is reset by the position it signal from the spindle detection device 117, and counts the pulses from the feedout detection device ie. The setting device [21 consists of a digital switch set by a dial, and is compatible with conditions such as the length and thickness of the needle thread T required for stitch formation, the width of the needle, and the feed pitch.] The length of the needle thread T to be fed out is set, and a different digital code is generated corresponding to the set length. This digital code is related to the number of clock pulses from the payout detector f1116 that correspond to the rotation angle of the rotating body 150 which is proportional to the payout amount.
比較回路22はカウンタ2Gと設定装[21との出力値
を比較し、双方が一致するときHの一致信号を発生する
OフリップフロップFFは主l1ll検出装置17から
の位置信号によってリセットされQ端子出力をLとし、
比較回路22からの一致信号によりQ端子出力をLから
Hに反転する。作動回路23.24はH信号を受けて第
一ソレノイド8、第二ソレノイド9を励磁するように闘
略し、L信号を受けてそれらを消磁するように閉略する
。The comparator circuit 22 compares the output values of the counter 2G and the setting device [21], and when they match, the O flip-flop FF which generates an H match signal is reset by the position signal from the main l1ll detector 17 and is connected to the Q terminal. Let the output be L,
A match signal from the comparison circuit 22 inverts the Q terminal output from L to H. The operating circuits 23 and 24 receive the H signal to energize the first solenoid 8 and the second solenoid 9, and receive the L signal to demagnetize and close them.
タイマーTMIはモノステーブルマルチパイプレータか
らなり、主軸検出器[17からのL信号(位置信号)の
立下りを検出してパルスを発生する。タイマーTM2は
コンデンサーごと抵抗Rとからなり、増巾祷BV介して
タイマーTMIからのパルスを受けて、その時から一定
時間経過するまでの間、比較器Pをして■信号を出力す
るように動作可能とするようにしである。The timer TMI is composed of a monostable multipiper and generates a pulse by detecting the fall of the L signal (position signal) from the main shaft detector [17. The timer TM2 consists of a capacitor and a resistor R, and receives a pulse from the timer TMI via the amplification voltage BV, and operates to output a signal from the comparator P until a certain period of time elapses from that time. This is to make it possible.
なお、01〜G6はアンドゲート回路、■はインバータ
であり、また押え上昇スイツf18.駆動スイッチ19
及びグー)Qsは押え星検出装置25を構成していCS
iVンの停止中に押え俸を特走の位w1まで上昇した
ときにH17)糸緩め信号を発生する。次にこれらの作
用を説明する。Note that 01 to G6 are AND gate circuits, ■ is an inverter, and presser foot lifting switch f18. Drive switch 19
and Goo) Qs constitutes the presser star detection device 25,
H17) A thread loosening signal is generated when the presser foot is raised to the special run position w1 while the iVn is stopped. Next, these effects will be explained.
布押え足を下降させ【ミンンlを駆動すると押え星検出
装置125の出力がLとなるから、ゲートG〜G4は開
かれてフリッププロップFFの出力状態をそのまま出力
する0−万、主軸に連動して針棒3、天秤5及び繰出し
体12が第3図の針棒曲線、天秤曲線及び稙出し曲線に
漬って往復動する。繰出し体12の第1図反Fgjti
万同への往動は画体持手段6,7間の針糸経路を増大す
るものであるが、WIA出し俸12の往動が開始すると
きは、主軸検出器17からのH信号によりフリップフロ
ップF’FがリセットされておりそのQfil子出力が
Lとなっているから、グー)01の出力はL1ゲー)G
4、の出力はHとなる。また主軸が所定の速度以上で回
転している時には後述するように比較器Pの出力が■と
なるから、上鮎の主軸回転角度位置にお〜・ては第一ソ
レノイド8が消磁し第二ソレノイド9が励磁し、従って
amし体12の往動により増大した針糸経路の長さだけ
針糸Tが糸巻4から画体持手段6.7間に繰込まれる。When the presser foot is lowered and [Min-L is driven, the output of the presser foot detection device 125 becomes L, so the gates G to G4 are opened and the output status of the flip-prop FF is output as is. Then, the needle bar 3, the thread take-up lever 5, and the feeding body 12 reciprocate along the needle bar curve, thread take-up curve, and shank curve shown in FIG. Figure 1 of the feeding body 12
The forward movement of the needle thread between the image body holding means 6 and 7 increases the needle thread path between the image holding means 6 and 7, but when the forward movement of the WIA payload 12 starts, the flip-flop is activated by the H signal from the spindle detector 17. Since F'F has been reset and its Qfil child output is L, the output of Goo)01 is L1G)
4, the output becomes H. In addition, when the main shaft is rotating at a predetermined speed or higher, the output of the comparator P becomes ■ as described later, so at the main shaft rotation angle position of the upper sweetfish, the first solenoid 8 is demagnetized and the second The solenoid 9 is energized, so that the needle thread T is fed from the spool 4 between the image body holding means 6, 7 by the length of the needle thread path increased by the forward movement of the ampere body 12.
このように針糸Tが糸巻4からh出されるのに連動して
回転体15が回動し、これにより繰出し検tH装置16
からその1g1転角度に比例した数のクロックパルスが
発生する。このクロックパルスはカウンタ20で計数さ
れ、そのKr算値が比較器B22の一万の入力部に入力
される。カウンタ20の計算値が設定装置21の出力に
一致すると、比較回路22からHの一致信号を出力し、
これによりフリップフロップFFf)Q端子出力が前述
したLからHに反転するので、耐−ソレノイド8が励磁
し第二ソレノイド9が消磁する。In this way, the rotating body 15 rotates in conjunction with the needle thread T being drawn out from the bobbin 4, and as a result, the feeding detection tH device 16
A number of clock pulses are generated in proportion to the 1g1 rotation angle. These clock pulses are counted by a counter 20, and the calculated value of Kr is inputted to the 10,000 input section of the comparator B22. When the calculated value of the counter 20 matches the output of the setting device 21, a matching signal of H is output from the comparison circuit 22,
As a result, the output from the flip-flop FFf)Q terminal is reversed from the above-mentioned L to H, so that the anti-corrosion solenoid 8 is energized and the second solenoid 9 is demagnetized.
従って繰出し体12の往動により予定長さの針糸Tか糸
巻4から画体持手段6,7間に繰込まれた後には、第一
保持手段6が針糸Tを通過不可能に ゛挾持して糸
巻4から繰出されるのを阻止すると共に、第二保持手段
7が針糸Tを通過可能に解放する。もしもl#出し体1
2往動の途中で予定長さの針糸Tが繰出されれば、その
後の繰出し体12の往動中は針2及び第二保持手段7間
に弛んでいる針糸Tが画体持手段6,7間に引き戻され
る。Therefore, after a predetermined length of needle thread T is fed from the bobbin spool 4 between the image holding means 6 and 7 by the forward movement of the feeding body 12, the first holding means 6 cannot pass the needle thread T. The needle thread T is clamped to prevent it from being unwound from the bobbin 4, and the second holding means 7 releases the needle thread T so that it can pass through. Moshi l# out body 1
2. If the needle thread T of a predetermined length is paid out during the forward movement, the needle thread T loosened between the needle 2 and the second holding means 7 is used as the image holding means during the subsequent forward movement of the feeding body 12. It was pulled back between 6 and 7.
また、繰出し体12は次に針71%Tが天秤5によって
緊張されるまでの間に復帰する。そこで次の天秤5によ
る針糸緊張期間中に画体持手段6,7間に繰込まれた針
糸Tが天秤5の上昇に伴なって引き出され、且つ第一保
持手段6及び縫目間の針糸Tが張られ、これにより縫目
が予定の強さで締められて結節する。Further, the feeding body 12 returns to its original position until the needle 71%T is next tensioned by the balance 5. Therefore, during the next period of tensioning the needle thread by the thread take-up lever 5, the needle thread T drawn in between the image body holding means 6 and 7 is pulled out as the thread take-up lever 5 rises, and The needle thread T is tensioned, and the stitches are tightened to a predetermined strength and knotted.
ミシン1を停止して布押え足を上昇させると押え星検出
装置25の出力がHとなりグー)G2を開くので、もし
針2がベッド面より下方に位置する下停止区間中であれ
ば、主軸検出装置!i17の出力がLであってグー)G
s、G4が開いた状態に保持されるから、ミシンの停止
中であっても、もしそれが繰出し体12による繰出しの
途中であって外部からの力により針糸Tが画体持手段6
,7間に繰込まれたとしても、設定装置jjL21で設
定した所定長さの針糸Tが画体持手段6.7間に繰込ま
れた時点でフリップフロップFFf)出力が■に反転す
れば、グー)Gm、G4の出力も反転するので第一保持
手段6によってその後の針糸の繰込みが阻止され、再び
布押え足を下してミシンを駆動すれば、その状態から引
続いて始動する。すなわち下停止区間におい【は、ミシ
ンを停止し布押え足を上げた状態で針糸Tに外力が作用
しても一縫目形成毎の針糸繰出しに何の影−をも及ぼさ
な〜ゝ0
これとは反対に針2がベッド面より上方に位置している
下停止区間中にミシンを止めて布押え足を所定の位置ま
で上昇すると、グー)G2の出力が■となってグー)G
l、G4を閉じると共に、これらの出力がLとなり両ソ
レノイド8,9を消磁させるので、画体持手段6,7は
針糸Tを通過可能に解放し、この場合には布の取出し作
業を容易にする。When the sewing machine 1 is stopped and the presser foot is raised, the output of the presser foot detection device 25 becomes H and G2 is opened. Detection device! i17 output is L and goo)G
s and G4 are held in the open state, even if the sewing machine is stopped, if the needle thread T is in the middle of being fed out by the feeding body 12 and the needle thread T is moved by an external force to the image body holding means 6.
, 7, the output of the flip-flop FFf) is reversed to ■ when the predetermined length of needle thread T set by the setting device jjL21 is fed between the image holding means 6 and 7. Since the outputs of Gm and G4 are also reversed, the first holding means 6 prevents the needle thread from being drawn in thereafter, and if the presser foot is lowered again and the sewing machine is driven, the sewing machine will continue from that state. Start. In other words, in the lower stop section, even if an external force is applied to the needle thread T with the sewing machine stopped and the presser foot raised, there is no effect on the needle thread feeding for each stitch formation. 0 On the other hand, if you stop the sewing machine during the lower stop section where needle 2 is located above the bed surface and raise the presser foot to the specified position, the output of G2 becomes ■ and goo) G
1 and G4 are closed, and these outputs become L to demagnetize both solenoids 8 and 9, so that the image holding means 6 and 7 are released to allow the needle thread T to pass through, and in this case, the work of taking out the cloth is no longer possible. make it easier.
上記したようにミシンの駆動中は主軸検出装置17の出
力と繰出し検出装置l1i16の出力により両ソレノイ
ド8.9が制御されるが、ミシンを停止するとタイマー
TMIの入力が変化しないので、タイマーTM2の時定
数による所定の時間が経過すると比V!器Pの出力がL
となる。これによりゲ−)Gli、G6が閉じるので両
ソレノイド8.9は消磁し、ミシン停止中の過熱が防止
される。As mentioned above, while the sewing machine is running, both solenoids 8.9 are controlled by the output of the spindle detection device 17 and the output of the feedout detection device l1i16, but when the sewing machine is stopped, the input of the timer TMI does not change, so the timer TM2 is When a predetermined time based on a time constant has passed, the ratio V! The output of device P is L
becomes. This closes Gli and G6, demagnetizing both solenoids 8.9 and preventing overheating while the sewing machine is stopped.
以上のようにこの発明は、通電・不通電に関連する電磁
作用により針糸を挾持・解放可能とした二部の保持手段
と、両件持手段間の針糸経路を増大した後に減少させる
ように天秤に同期して作動する繰出し体とにより、−縫
目形成毎に必要長さの針糸を供給源から繰出して天秤へ
供給するようにした装置において、主軸の特定回転角を
検出して発生する位置信号の発生から一定時間経過する
までの間に次の位置信号が発生しない場合には画体持手
段への通電を遮断するように構成したので、電源を入れ
たままミシンを長時間停止させても保持手段が過熱しな
いから、縫糸の品質を損なわず且つ糸の繰出し精度を向
上すると共に、保持手段の損傷を防止し、停止中の電力
消費をも防止でき、耐久性及び経済性に優れた効果も得
られる。As described above, the present invention has a two-part holding means that can hold and release the needle thread by electromagnetic action related to energization/de-energization, and a mechanism that increases and then decreases the needle thread path between the two holding means. In this device, a needle thread of a required length is paid out from a supply source and fed to the thread take-up each time a stitch is formed, by means of a feed-out body that operates in synchronization with the thread take-up. If the next position signal is not generated within a certain period of time after the first position signal is generated, the power to the image holding means is cut off, so the sewing machine cannot be operated for long periods with the power on. Since the holding means does not overheat even when the sewing machine is stopped, the quality of the sewing thread is not impaired and the thread payout accuracy is improved, and the holding means is prevented from being damaged and power consumption is prevented while the sewing machine is stopped, making it durable and economical. Excellent effects can also be obtained.
なお、上記の各、実施例においては、−釦毎の縫目結節
に要する針糸の長さに関する基礎データをデジタルスイ
ッチの手動操作により設定するものを示したが、針振り
調節手段や送り調節手段の設定位置を公知の検出手段に
より検出したデータ又は針振り機構や布送り機構の運動
量を検出したデータにより、予め記憶された糸量データ
を記憶装置から読み出し、このデータを繰り出し長さの
基礎データとするか、又は上記検出データに基き演算し
て求めたデータを繰り出し長さの基礎データとして比較
器N22に入力するようにしてもよいし、記憶装置に記
憶したデータに基いて針振り機構や布送り機構を作動す
る型式のミシンにおいて、その記憶データにより予め記
憶された光量データを単に読み出すか、又はその記憶デ
ータにより演算して求めたデータを繰り出し長さの基礎
データとして比較回路/gK入力するようにしてもよい
。In each of the above-mentioned embodiments, basic data regarding the length of needle thread required for knotting each stitch for each button was set by manual operation of a digital switch. Based on the data detected by the set position of the means using a known detection means or the data detected from the momentum of the needle swinging mechanism or cloth feeding mechanism, pre-stored yarn amount data is read out from the storage device, and this data is used as the basis for the unreeling length. data, or data obtained by calculation based on the detected data may be input to the comparator N22 as basic data of the feeding length, or the needle swing mechanism may be set based on the data stored in the storage device. In a sewing machine of a type that operates a fabric feed mechanism or a fabric feeding mechanism, a comparator circuit/gK can be used to simply read out the light amount data stored in advance using the stored data, or to use the data calculated by using the stored data as basic data for the feeding length. You may also input it.
更に針振りと布送りに関するデータの他に、市原による
布押え足の位置の変化をvテ″ンショメータで検出する
重厚検出手段の検出データや、布の織糸・織方等の種類
に対応して予め実験によって求めたデータを複合して繰
り出し量を設定するようにしてもよい。Furthermore, in addition to data regarding needle swing and fabric feed, the system also supports Ichihara's detection data from a heavy weight detection means that uses a V tension meter to detect changes in the position of the presser foot, as well as the type of fabric, such as yarn and weaving method. The feeding amount may be set by combining data obtained through experiments in advance.
72号の第1実施例に示したように針糸経路に対向する
外周にカム面を形成した繰出し体を回動するようにして
もよい。As shown in the first embodiment of No. 72, a feeding body having a cam surface formed on the outer periphery facing the needle thread path may be rotated.
上記実施例では主軸検出装置からL信号(位置信号)が
発生する時期を針がベッド上面よりも下方に位置する下
停止区間に一致させ、その信号を画体持手段の制御とミ
シンの下停止区間と下停止区間の判別に使用したが、針
糸の繰出しに先だって保持手段の状態を反転させるため
の(第二)位置信号を発生する装置(第二主軸検出装置
)を別に設けてもよい。In the above embodiment, the timing at which the L signal (position signal) is generated from the spindle detection device is made to coincide with the lower stop section in which the needle is located below the top surface of the bed, and the signal is used to control the image holding means and lower stop of the sewing machine. Although it is used to distinguish between the section and the lower stop section, a device (second spindle detection device) that generates a (second) position signal for reversing the state of the holding means prior to feeding out the needle thread may be provided separately. .
第1図は要部の斜視図、第2図は電気回路のブロック図
、第3.’I図はタイムチャートである。
(15〕
手続補正書(方式)
1事件の表示
昭和58年特許願第13083号
2発明の名称
ミシンの針糸供給装置
4補正命令の日付 昭和58年4 月26日5、補
正の対象
598−Figure 1 is a perspective view of the main parts, Figure 2 is a block diagram of the electric circuit, and Figure 3. 'I diagram is a time chart. (15) Procedural amendment (method) 1 Indication of the case 1982 Patent Application No. 13083 2 Name of the invention Needle thread supply device for sewing machine 4 Date of amendment order April 26, 1980 5, Subject of amendment 598-
Claims (1)
糸供給方向の先方と手前に離隔して配置し、通電により
電磁力を介して針糸な通過不可能に保持し不通電により
針糸を通過可能に解放するように針糸に作用する二部の
保持手段乙、7と、両件持手段間の針糸経路上に配置し
、両件持手段間の針糸経路を変更してその経路の長さを
天秤による針糸緊張時期以外の時期に増大した後に天秤
による針糸の最大緊張時までに最短とするよう定時期に
対応する主軸の特定回転角を検出して位置信号を発生す
る主軸検出装置/りとを備え、位置信号の発生に関連し
て供給源側の保持手段を不通電とし天秤側の保持手段を
通電し、繰出し体に連動して針糸を供給源から両件持手
段間に繰出すと共に、予め設定した針糸量の繰出しに関
連して次の位置信号が発生するまで供給源側の保持手段
を通電してその後の針糸の繰出しを阻止し且つ天秤側の
保持手段を不通電として一縫目形成毎に設定長さの針糸
を予め供給源がら繰出して天秤へ供給するようにしたミ
シンの針糸供給装置において、 位置信号の発生から一定時間経過する間に次の位置信号
が発生しないことに関連して画体持手段への通電を遮断
する制御回路を備えたことを特徴とするミシンの針糸供
給装置。[Scope of Claims] The thread take-up lever and the needle thread supply source are arranged so as to be spaced apart from each other in the forward and front directions in the needle thread supply direction on the needle thread path, and the needle thread cannot pass through due to electromagnetic force when energized. a two-part holding means B, 7 which acts on the needle thread so as to hold it there and release it so that it can pass when the needle thread is not energized; A specific rotation of the spindle corresponding to a fixed period is performed so that the length of the needle thread increases at a time other than when the needle thread is tensioned by the take-up lever, and then becomes the shortest by the time the thread take-up reaches its maximum tension. It is equipped with a spindle detection device that detects the angle and generates a position signal, and in connection with the generation of the position signal, the holding means on the supply source side is de-energized, the holding means on the balance side is energized, and it is linked to the feeding body. Then, the needle thread is fed out from the supply source between the two holding means, and the holding means on the supply source side is energized until the next position signal is generated in relation to the feeding of the preset amount of needle thread. In a needle thread supply device for a sewing machine, which prevents the needle thread from being fed out and de-energizes the holding means on the take-up side so that a set length of needle thread is let out from the supply source and supplied to the take-up thread each time one stitch is formed. , A needle thread supply device for a sewing machine, characterized in that it is equipped with a control circuit that cuts off the power supply to the image holding means in response to the fact that the next position signal is not generated within a certain period of time after the generation of the position signal. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1308383A JPS6038152B2 (en) | 1983-01-28 | 1983-01-28 | Sewing machine needle thread supply device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1308383A JPS6038152B2 (en) | 1983-01-28 | 1983-01-28 | Sewing machine needle thread supply device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59137095A true JPS59137095A (en) | 1984-08-06 |
JPS6038152B2 JPS6038152B2 (en) | 1985-08-30 |
Family
ID=11823270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1308383A Expired JPS6038152B2 (en) | 1983-01-28 | 1983-01-28 | Sewing machine needle thread supply device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6038152B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61159988A (en) * | 1984-12-29 | 1986-07-19 | ジューキ株式会社 | Needle thread feeder of sewing machine |
-
1983
- 1983-01-28 JP JP1308383A patent/JPS6038152B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61159988A (en) * | 1984-12-29 | 1986-07-19 | ジューキ株式会社 | Needle thread feeder of sewing machine |
JPH0345671B2 (en) * | 1984-12-29 | 1991-07-11 | Juki Kk |
Also Published As
Publication number | Publication date |
---|---|
JPS6038152B2 (en) | 1985-08-30 |
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