JPH07313775A - Sewing machine driving device - Google Patents
Sewing machine driving deviceInfo
- Publication number
- JPH07313775A JPH07313775A JP10835194A JP10835194A JPH07313775A JP H07313775 A JPH07313775 A JP H07313775A JP 10835194 A JP10835194 A JP 10835194A JP 10835194 A JP10835194 A JP 10835194A JP H07313775 A JPH07313775 A JP H07313775A
- Authority
- JP
- Japan
- Prior art keywords
- current
- sewing machine
- solenoid
- electromagnetic solenoid
- opening
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は工業用ミシンを駆動する
ミシン駆動装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine drive device for driving an industrial sewing machine.
【０００２】[0002]
【従来の技術】近年の工業用ミシンは、作業者の脱技能
化，縫製品の品質向上等のため糸切り機構，返し縫い機
構，布押さえ上げ機構等を備え、それらをマイクロコン
ピューターを搭載した制御装置で駆動するものが一般的
である。2. Description of the Related Art Recent industrial sewing machines are equipped with a thread trimming mechanism, a reverse stitching mechanism, a cloth presser lifting mechanism, etc., for the purpose of making workers less skilled and improving the quality of sewing products. It is generally driven by a device.
【０００３】これらのミシン機構を作動させる電磁ソレ
ノイドの駆動電流は大型のもので８Ａ程度と比較的大き
い。そしてまた、最近では電磁ソレノイド回路の短絡等
で高価な制御装置が破損したり焼損するのを防ぐため保
護回路を設けるのが一般的である。The drive current of the electromagnetic solenoid for operating these sewing machine mechanisms is large and about 8 A, which is relatively large. Further, recently, it is general to provide a protection circuit in order to prevent the expensive control device from being damaged or burnt out due to a short circuit of the electromagnetic solenoid circuit or the like.
【０００４】以下図面を参照しながら上述した従来の技
術によるミシン駆動装置を説明する。A sewing machine driving device according to the above-mentioned conventional technique will be described below with reference to the drawings.
【０００５】図５はミシンとミシン駆動装置の一般的構
成を示すものである。図３は電磁ソレノイドを駆動させ
る制御の基本的な構成図である。FIG. 5 shows a general structure of a sewing machine and a sewing machine driving device. FIG. 3 is a basic configuration diagram of control for driving the electromagnetic solenoid.
【０００６】図５で、ミシン１は糸切り機構用電磁ソレ
ノイド２、返し縫い機構用電磁ソレノイド３、布押さえ
上げ用電磁ソレノイド４等を備え、ベルト５によりモー
タ６と連結されている。In FIG. 5, a sewing machine 1 includes an electromagnetic solenoid 2 for a thread trimming mechanism, an electromagnetic solenoid 3 for a reverse stitching mechanism, an electromagnetic solenoid 4 for lifting cloth, and the like, and is connected to a motor 6 by a belt 5.
【０００７】モータ６は制御装置７により駆動される。
制御装置７は、ペダル８やスイッチ９の操作により電磁
ソレノイド２，３，４を作動させる。The motor 6 is driven by the controller 7.
The control device 7 operates the electromagnetic solenoids 2, 3 and 4 by operating the pedal 8 and the switch 9.
【０００８】次に図３を用いて制御装置の詳細な構成を
説明する。制御装置７は、モータ制御部１０と、ソレノ
イド制御部１１と、それらを総合的に制御するミシン制
御部１２からなる。Next, the detailed structure of the control device will be described with reference to FIG. The control device 7 includes a motor control unit 10, a solenoid control unit 11, and a sewing machine control unit 12 that comprehensively controls them.
【０００９】ソレノイド制御部１１はソレノイド用電源
回路１３、開閉手段１４そして電流検出手段１５からな
る。The solenoid control section 11 comprises a solenoid power supply circuit 13, an opening / closing means 14 and a current detecting means 15.
【００１０】開閉手段１４はトランジスタ１６によりソ
レノイド２，３，４をミシン制御部１２からの指令１７
により開閉する構成である。The opening / closing means 14 controls the solenoids 2, 3 and 4 by means of the transistor 16 to give a command 17 from the sewing machine controller 12.
It is configured to open and close by.
【００１１】電流検出手段１５はソレノイド２，３，４
から電源回路１３へのソレノイド電流１８を測定し、実
施例では９．５Ａ以上で過電流検出信号１９を出力し、
過電流検出信号１９は開閉手段１４とミシン制御部１２
に接続されている。The current detecting means 15 is a solenoid 2, 3, 4
The solenoid current 18 from the power supply circuit 13 to the power supply circuit 13, and outputs an overcurrent detection signal 19 at 9.5 A or more in the embodiment,
The overcurrent detection signal 19 is output to the opening / closing means 14 and the sewing machine controller 12.
It is connected to the.
【００１２】以上のように構成されたミシン駆動装置に
ついて、以下その動作について説明する。The operation of the sewing machine driving device having the above-described structure will be described below.
【００１３】図５に示すペダル８やスイッチ９からの操
作指令がミシン制御部に入力されると、図３に示すよう
にミシン制御部１２はモータ６を回すようにモータ制御
部１０への指令２１あるいはソレノイド２，３，４を作
動させる指令１７を出力する。例えば、ペダル８を踏み
込むとミシン制御部１２はモータ制御部１０にモータ６
を回転させる指令２１を出力し、ペダルを中立位置まで
戻すとモータ６を停止させる指令を出力する。また、ペ
ダル８を踏み返すと指令１７により糸切り機構用電磁ソ
レノイド２を作動させる。さらに糸切り後ペダルを踏み
返していると布押さえ上げ用電磁ソレノイド４を作動さ
せる。When an operation command from the pedal 8 or the switch 9 shown in FIG. 5 is input to the sewing machine controller, the sewing machine controller 12 commands the motor controller 10 to rotate the motor 6 as shown in FIG. 21 or a command 17 for operating the solenoids 2, 3, 4 is output. For example, when the pedal 8 is depressed, the sewing machine control unit 12 causes the motor control unit 10 to drive the motor 6
Is output, and when the pedal is returned to the neutral position, a command to stop the motor 6 is output. When the pedal 8 is stepped back, the command 17 activates the electromagnetic solenoid 2 for the thread cutting mechanism. Further, when the pedal is stepped back after thread cutting, the cloth press-up electromagnetic solenoid 4 is activated.
【００１４】一方、図４に示すようにａ点で開閉手段を
オンするとソレノイド電流はｃで示すようにソレノイド
の時定数で決まる傾きで増加し、電流検出手段は９．５
Ａ以上が流れるとｅに示すように過電流検出信号を出力
する。過電流検出信号は開閉手段に作用し各ソレノイド
への電流を遮断するとともに、ミシン制御部に作用しす
べての制御を停止させる。On the other hand, as shown in FIG. 4, when the opening / closing means is turned on at the point a, the solenoid current increases with a gradient determined by the time constant of the solenoid as shown by c, and the current detecting means is 9.5.
When A or more flows, an overcurrent detection signal is output as indicated by e. The overcurrent detection signal acts on the opening / closing means to cut off the current to each solenoid, and also acts on the sewing machine control unit to stop all controls.
【００１５】そして、ソレノイドやソレノイドへの接続
回路が短絡した場合は、ｂに示すように急激に電流が増
加しａ点から約１０μｓで過電流検出信号を出力する。When the solenoid or the connection circuit to the solenoid is short-circuited, the current abruptly increases as shown in b and the overcurrent detection signal is output in about 10 μs from the point a.
【００１６】以上の動作により、電磁ソレノイドの絶縁
劣化や接続部の不具合により開閉手段のトランジスタが
破壊するのを防止している。By the above operation, the transistor of the opening / closing means is prevented from being broken due to the insulation deterioration of the electromagnetic solenoid or the malfunction of the connecting portion.
【００１７】[0017]
【発明が解決しようとする課題】以上説明したような従
来のミシン駆動装置は、電磁ソレノイドの絶縁劣化や接
続部の不具合により開閉手段のトランジスタが破壊する
のを防止することに関しては非常に有用であるが、電源
電圧の変動より大型の電磁ソレノイドを使うミシン機構
を駆動する時、あるいは複数の電磁ソレノイドが同時に
オンする時等で９．５Ａを超える場合も動作してしまう
という問題がある。あるいは、電流を制限するだけで電
流を遮断しない構成では、短絡時に開閉手段のトランジ
スタのスイッチング損失が増大し破壊する恐れがある
等、使用範囲が制限されてしまうという問題点を有して
いた。The conventional sewing machine drive apparatus as described above is very useful for preventing the transistor of the opening / closing means from being destroyed by the deterioration of the insulation of the electromagnetic solenoid or the malfunction of the connecting portion. However, there is a problem in that when a sewing machine mechanism that uses an electromagnetic solenoid larger than the fluctuation of the power supply voltage is driven, or when a plurality of electromagnetic solenoids are turned on at the same time, the operation is performed even if the current exceeds 9.5A. Alternatively, in the configuration in which the current is only cut off but the current is not cut off, there is a problem that the use range is limited, for example, the switching loss of the transistor of the switching means increases and may be destroyed during a short circuit.
【００１８】本発明は、電流検出手段に流れる電流を過
負荷による過大電流か短絡による過大電流かを識別し、
短絡による過大電流の場合はソレノイドへの電流をすべ
て遮断し、過負荷による過大電流の場合はソレノイドへ
の電流を制限するだけにし、制限された電流の範囲でソ
レノイドは動作するように構成することで広い範囲の種
類のミシンに使用可能なミシン駆動装置を提供するもの
である。The present invention discriminates whether the current flowing through the current detecting means is an overcurrent due to an overload or an overcurrent due to a short circuit,
In the case of excessive current due to a short circuit, shut off all current to the solenoid, and in case of excessive current due to overload, limit the current to the solenoid only, and configure the solenoid to operate within the limited current range. The present invention provides a sewing machine drive device that can be used for a wide variety of sewing machines.
【００１９】[0019]
【課題を解決するための手段】上記課題を解決するため
本発明のミシン駆動装置は、ミシンを回転させるモータ
と、電磁ソレノイドの動作を制御する制御装置からな
り、制御装置は、作業者による操作あるいはあらかじめ
プログラムされた手順により電磁ソレノイドの動作を制
御するミシン制御部と、電磁ソレノイドへの電流を検出
する電流検出手段と、ソレノイドの電源回路と、電源回
路と電磁ソレノイドの間で電磁ソレノイドへの電流を開
閉する開閉手段を含み、前記電流検出手段は、あらかじ
め定められた電流値の範囲で前記開閉手段に影響し電磁
ソレノイドへの電流を開閉するとともに、開閉の周期を
判断する弁別器を備え、前記弁別器はあらかじめ定めら
れた周期以下の時、前記開閉手段とミシン制御部あるい
は電源回路とミシン制御部に介入し電磁ソレノイドへの
通電を中断する構成としている。In order to solve the above-mentioned problems, a sewing machine drive device of the present invention comprises a motor for rotating a sewing machine and a control device for controlling the operation of an electromagnetic solenoid. The control device is operated by an operator. Alternatively, a sewing machine control unit that controls the operation of the electromagnetic solenoid by a pre-programmed procedure, a current detection unit that detects a current to the electromagnetic solenoid, a solenoid power supply circuit, and a solenoid power supply between the power supply circuit and the electromagnetic solenoid The current detecting means includes an opening / closing means for opening / closing an electric current, and the current detecting means includes a discriminator that determines the opening / closing cycle while opening / closing the current to the electromagnetic solenoid by affecting the opening / closing means within a predetermined current value range. When the discriminator has a predetermined cycle or less, the opening / closing means and the sewing machine controller or the power supply circuit and the sewing machine Intervene in control unit is set to suspend construction energization of the electromagnetic solenoid.
【００２０】[0020]
【作用】この構成によって、電流検出器に流れる電流を
過負荷による過大電流か短絡による過大電流かを識別
し、短絡による過大電流の場合はソレノイドへの電流を
すべて遮断し、過負荷による過大電流の場合はソレノイ
ドへの電流を制限するだけにし、制限された電流の範囲
でソレノイドを作動することが可能なため広い範囲の種
類のミシンに使用することが可能である。With this configuration, it is possible to distinguish whether the current flowing in the current detector is an overcurrent due to an overload or an overcurrent due to a short circuit, and when the current is an overcurrent due to a short circuit, shut off all the current to the solenoid. In this case, the current to the solenoid is only limited, and the solenoid can be operated within the limited current range, so that it can be used for a wide range of sewing machines.
【００２１】[0021]
【実施例】以下本発明の一実施例のミシン駆動装置につ
いて、図面を参照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A sewing machine drive apparatus according to an embodiment of the present invention will be described below with reference to the drawings.
【００２２】図５はミシンとミシン駆動装置の一般的配
置を示すものであり、図１はミシン駆動装置のブロック
図を示す。図５の構成とその動作は従来例と同じである
ため説明を省略する。FIG. 5 shows a general arrangement of the sewing machine and the sewing machine driving device, and FIG. 1 shows a block diagram of the sewing machine driving device. The configuration of FIG. 5 and its operation are the same as those of the conventional example, and therefore description thereof will be omitted.
【００２３】図１で、ソレノイド制御部２２の電流検出
手段２３は図２に示すように９．５Ａで電流検出信号を
オンし、８Ａでオフする構成の電流検出器２４と、電流
検出器２４からの過電流検出信号２５のオンオフの周期
を識別する周期弁別器２６を有し、過電流検出信号２５
は開閉手段１４に入力されるとともに、周期弁別器２６
を介して周期弁別信号２７としてミシン制御部１２と開
閉手段１４に入力されていることが従来例と異なる。In FIG. 1, the current detection means 23 of the solenoid control section 22 turns on the current detection signal at 9.5 A and turns off at 8 A as shown in FIG. 2, and the current detector 24. The overcurrent detection signal 25 is provided with a cycle discriminator 26 for identifying the on / off cycle of the overcurrent detection signal 25 from
Is input to the opening / closing means 14, and the periodic discriminator 26
This is different from the conventional example in that it is inputted to the sewing machine controller 12 and the opening / closing means 14 as a periodic discrimination signal 27 via the.
【００２４】以下、図１，図２を用いて実施例の動作を
説明する。図１で開閉手段１４のトランジスタ１６をオ
ンすると、図２のｆに示すように開閉手段１４がオンし
たｇ点から電磁ソレノイドインダクタンスにより徐々に
増加し、電流検出器２４は電磁ソレノイドへ流れる電流
が９．５Ａを超えると過電流検出信号２５を出力し、開
閉手段１４のトランジスタ１６をオフする。トランジス
タ１６がオフすると電流は徐々に減少する。電流検出器
２４は電磁ソレノイドへ流れる電流が８Ａ以下になると
過電流検出信号２５をオフにし、トランジスタ１６を再
びオンする。以後ｈに示すように繰り返す。この過電流
検出信号２５のオンオフの周期Ｔ１は電磁ソレノイドの
インダクタンスにより決まる。一方、電磁ソレノイドや
その接続回路が短絡した時は、図２のｉに示すように急
激に電流が変化するため過電流検出信号ｊのオンオフの
周期Ｔ２も短い。実施例では、電磁ソレノイドの場合の
周期Ｔ１は約３ｍＳ、短絡の場合の周期Ｔ２は約２０μ
Ｓであった。The operation of the embodiment will be described below with reference to FIGS. When the transistor 16 of the switching means 14 is turned on in FIG. 1, the electromagnetic solenoid inductance gradually increases from the point g when the switching means 14 is turned on as shown in FIG. When it exceeds 9.5 A, the overcurrent detection signal 25 is output and the transistor 16 of the switching means 14 is turned off. When the transistor 16 turns off, the current gradually decreases. The current detector 24 turns off the overcurrent detection signal 25 and turns on the transistor 16 again when the current flowing to the electromagnetic solenoid becomes 8 A or less. Thereafter, the process is repeated as indicated by h. The on / off cycle T1 of the overcurrent detection signal 25 is determined by the inductance of the electromagnetic solenoid. On the other hand, when the electromagnetic solenoid or its connecting circuit is short-circuited, the current changes abruptly as shown by i in FIG. 2, so the on / off cycle T2 of the overcurrent detection signal j is short. In the embodiment, the cycle T1 for the electromagnetic solenoid is about 3 mS, and the cycle T2 for the short circuit is about 20 μ.
It was S.
【００２５】周期弁別器２６はこの周期Ｔ１とＴ２の差
を判別し、図２のｋに示すように周期が短い時弁別信号
２７を出力する。The cycle discriminator 26 discriminates the difference between the cycles T1 and T2, and outputs a discrimination signal 27 when the cycle is short as shown by k in FIG.
【００２６】弁別信号２７は、開閉手段１４に介入して
直ちに電流を遮断する。この時は８Ａ以下になってもト
ランジスタ１６をオンしない。さらに弁別信号２７はミ
シン制御部１２に入力され、ミシン制御部１２はこの信
号を受けて開閉手段１４への出力を中断するとともにす
べての動作を停止する。The discrimination signal 27 intervenes in the opening / closing means 14 and immediately cuts off the current. At this time, the transistor 16 is not turned on even if the current becomes 8 A or less. Further, the discrimination signal 27 is input to the sewing machine control unit 12, and the sewing machine control unit 12 receives this signal to interrupt the output to the opening / closing means 14 and stop all the operations.
【００２７】以上が本発明の実施例の動作である。な
お、実施例では過電流検出信号２５と弁別信号２７は開
閉手段１４に作用させたが、電源回路１３に作用させて
も同じような結果が得られる。The above is the operation of the embodiment of the present invention. Although the overcurrent detection signal 25 and the discrimination signal 27 are applied to the opening / closing means 14 in the embodiment, the same result can be obtained by applying them to the power supply circuit 13.
【００２８】[0028]
【発明の効果】以上のように本発明は、ソレノイドを制
御する構成として電磁ソレノイドへの電流を検出する電
流検出手段と、ソレノイドの電源回路と、電源回路と電
磁ソレノイドの間で電磁ソレノイドへの電流を開閉する
開閉手段を含み、前記電流検出手段はあらかじめ定めら
れた電流値の範囲で前記開閉手段に影響し電磁ソレノイ
ドへの電流を開閉するとともに開閉の周期を判断する弁
別器を備え、前記弁別器はあらかじめ定められた周期以
下の時、前記開閉手段とミシン制御部あるいは電源回路
とミシン制御部に介入し電磁ソレノイドへの通電を中断
することにより大型の電磁ソレノイドや電磁ソレノイド
の同時駆動にも対応でき、しかも短絡のような異常時に
は電流を遮断できる優れたミシン駆動装置を実現できる
ものである。As described above, according to the present invention, the current detecting means for detecting the current to the electromagnetic solenoid as the structure for controlling the solenoid, the power circuit of the solenoid, and the electromagnetic solenoid connected between the power circuit and the electromagnetic solenoid. An opening / closing means for opening and closing a current is provided, the current detecting means is provided with a discriminator that determines the opening / closing cycle while opening / closing the current to the electromagnetic solenoid that affects the opening / closing means within a predetermined current value range, When the discriminator is below a predetermined cycle, it intervenes in the opening / closing means and the sewing machine control part or the power supply circuit and the sewing machine control part to interrupt the energization of the electromagnetic solenoid to simultaneously drive a large electromagnetic solenoid or an electromagnetic solenoid. It is possible to realize an excellent sewing machine drive device capable of coping with the above and capable of interrupting the current in the case of an abnormality such as a short circuit.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の一実施例におけるミシン駆動装置のブ
ロック図FIG. 1 is a block diagram of a sewing machine driving device according to an embodiment of the present invention.
【図２】同ミシン駆動装置の動作を説明するタイムチャ
ートFIG. 2 is a time chart explaining the operation of the sewing machine driving device.
【図３】従来のミシン駆動装置のブロック図FIG. 3 is a block diagram of a conventional sewing machine drive device.
【図４】従来のミシン駆動装置の動作を説明するタイム
チャートFIG. 4 is a time chart explaining the operation of a conventional sewing machine drive device.
【図５】ミシン駆動装置を備えたミシンの概略図FIG. 5 is a schematic view of a sewing machine including a sewing machine drive device.
１ ミシン ２，３，４ 電磁ソレノイド １２ ミシン制御部 １３ 電磁ソレノイドの電源回路 １４ 開閉手段 １６ 開閉手段のトランジスタ ２２ ソレノイド制御部 ２３ 電流検出手段 ２４ 電流検出器 ２５ 過電流検出信号 ２６ 周期弁別器 ２７ 弁別信号 1 Sewing Machine 2, 3, 4 Electromagnetic Solenoid 12 Sewing Machine Control Section 13 Electromagnetic Solenoid Power Supply Circuit 14 Opening / Closing Means 16 Transistor of Opening / Closing Means 22 Solenoid Control Section 23 Current Detection Means 24 Current Detector 25 Overcurrent Detection Signal 26 Period Discriminator 27 Discrimination signal
Claims (2)
あるいは返し縫い機構等のミシン機構に係わる電磁ソレ
ノイドを備えたミシンを駆動するミシン駆動装置におい
て、前記ミシン駆動装置はミシンを回転させるモータ
と、電磁ソレノイドの動作を制御する制御装置からな
り、 前記制御装置は、作業者による操作あるいはあらかじめ
プログラムされた手順により電磁ソレノイドの動作を制
御するミシン制御部と、電磁ソレノイドへの電流を検出
する電流検出手段と、ソレノイドの電源回路と、電源回
路と電磁ソレノイドの間で電磁ソレノイドへの電流を開
閉する開閉手段を含み、 前記電流検出手段は、あらかじめ定められた電流値の範
囲で前記開閉手段に影響し電磁ソレノイドへの電流を開
閉するとともに、開閉の周期を判断する弁別器を備え、 前記弁別器はあらかじめ定められた周期以下の時、前記
開閉手段とミシン制御部に介入し電磁ソレノイドへの通
電を中断する構成のミシン駆動装置。1. A sewing machine fabric lifting mechanism, a thread trimming mechanism,
Alternatively, in a sewing machine drive device for driving a sewing machine including an electromagnetic solenoid relating to a sewing machine mechanism such as a reverse stitching mechanism, the sewing machine drive device includes a motor for rotating the sewing machine and a control device for controlling the operation of the electromagnetic solenoid. Is a sewing machine control unit that controls the operation of the electromagnetic solenoid by an operator's operation or a pre-programmed procedure, a current detection unit that detects the current to the electromagnetic solenoid, a power supply circuit of the solenoid, and a power supply circuit and an electromagnetic solenoid. And an opening / closing means for opening / closing a current to the electromagnetic solenoid, wherein the current detecting means opens / closes the current to the electromagnetic solenoid by affecting the opening / closing means within a predetermined current value range, A discriminator for judging is provided, and the discriminator has a predetermined cycle or less. Sewing machine drive apparatus interrupts constituting the energization of the electromagnetic solenoid intervene in the switching means and the sewing machine controller.
時、前記電源回路とミシン制御部に介入し電源回路の出
力電圧を制御し、あるいはソレノイドの駆動を含むミシ
ン動作を中断する構成の請求項１記載のミシン駆動装
置。2. The discriminator intervenes in the power supply circuit and the sewing machine control unit to control the output voltage of the power supply circuit or interrupt the sewing machine operation including the driving of the solenoid when the discriminator is in a predetermined cycle or less. Item 2. A sewing machine drive device according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10835194A JP2871461B2 (en) | 1994-05-23 | 1994-05-23 | Sewing machine drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10835194A JP2871461B2 (en) | 1994-05-23 | 1994-05-23 | Sewing machine drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07313775A true JPH07313775A (en) | 1995-12-05 |
| JP2871461B2 JP2871461B2 (en) | 1999-03-17 |
Family
ID=14482514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10835194A Expired - Fee Related JP2871461B2 (en) | 1994-05-23 | 1994-05-23 | Sewing machine drive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2871461B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109440303A (en) * | 2018-11-23 | 2019-03-08 | 杰克缝纫机股份有限公司 | Suitable for the control method of sewing machine calutron, system, terminal and medium |
-
1994
- 1994-05-23 JP JP10835194A patent/JP2871461B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109440303A (en) * | 2018-11-23 | 2019-03-08 | 杰克缝纫机股份有限公司 | Suitable for the control method of sewing machine calutron, system, terminal and medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2871461B2 (en) | 1999-03-17 |
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| LAPS | Cancellation because of no payment of annual fees |