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    • 3. 发明授权
    • Multihead sewing machine with improved shuttle drive control
    • 多头缝纫机具有改进的梭式驱动控制
    • US5913276A
    • 1999-06-22
    • US39413
    • 1998-03-16
    • Yoshikazu KuronoMasaki ShimizuHirokazu Hirose
    • Yoshikazu KuronoMasaki ShimizuHirokazu Hirose
    • D05B55/10D05B57/30D05B57/38D05B69/28D05B69/30D05C11/18D05B19/12D05B21/00D05B57/36D05B69/18
    • D05C11/18D05B57/38D05B69/28
    • A multihead sewing machine includes a sewing machine motor, a main shaft rotated by the sewing machine motor, a plurality of sewing needles driven by the main shaft, a plurality of shuttles for capturing thread loops in cooperation with the sewing needles respectively, each shuttle having a hook shaft, and a plurality of shuttle driving motors for rotating the hook shafts of the shuttles independent of the sewing machine motor respectively. The sewing machine motor and the shuttle driving motors are controlled so that the sewing machine motor and each shuttle driving motor are rotated in synchronism with each other. Loss of synchronism of each shuttle relative to the corresponding sewing needle is detected. Rotation of the main shaft is stopped in an abnormal condition in which the loss of synchronism has been detected with respect to at least one of the shuttles. Furthermore, at least the shuttle driving motor or motors other than the shuttle driving motor regarding which the loss of synchronism has been detected are rotated in synchronism with the main shaft until rotation of the main shaft stops.
    • 多头缝纫机包括缝纫机马达,由缝纫机马达旋转的主轴,由主轴驱动的多个缝合针,多个梭子,分别与缝纫针配合抓住线圈,每个梭子具有 钩轴,以及分别独立于缝纫机马达分别使梭子的钩轴转动的多个往复运动马达。 控制缝纫机马达和往复驱动马达,使得缝纫机马达和每个往复驱动马达彼此同步地旋转。 检测每个梭子相对于相应缝针的同步失去。 主轴的旋转在相对于梭子中的至少一个检测到失去同步的异常状态下停止。 此外,至少检测到失速同步的梭子驱动电动机以外的梭式驱动电动机或电动机与主轴同步旋转,直到主轴的转动停止。
    • 9. 发明授权
    • Sewing machine with means for synchronizing drive of needle and loop
taker motors
    • 缝纫机具有用于同步驱动针和回路电机的装置
    • US5794554A
    • 1998-08-18
    • US752285
    • 1996-11-19
    • Kohichi AkahaneTakashi KondoMasaki ShimizuYoshikazu KuronoFumiaki Asano
    • Kohichi AkahaneTakashi KondoMasaki ShimizuYoshikazu KuronoFumiaki Asano
    • D05B19/12D05B55/14D05B57/14D05B57/30D05B57/38D05B19/00
    • D05B55/14D05B19/12D05B57/30D05D2205/18
    • A sewing machine including a head portion including a needle bar, the needle bar being for mounting a needle threaded with a needle thread; a principal shaft; a sewing machine motor for driving the needle bar via the principal shaft; a bed portion including a loop taker for taking a thread loop of the needle thread in cooperative operation with the needle; a loop taker drive shaft connected to move in association with the loop taker; a drive motor for driving the loop taker drive shaft independently of the principal shaft; a first detection unit for detecting a rotation condition of the principal shaft and outputting a first detection signal accordingly; a second detection unit for detecting a rotation condition of the loop taker drive shaft and outputting a second detection signal accordingly; and a synchronization control unit for controlling at least one of the drive motor and the sewing machine motor based on the first detection signal from the first detection unit and the second detection signal from the second detection unit so that the loop taker and the principal shaft rotate in synchronization.
    • 一种缝纫机,包括:头部,其包括针杆,所述针杆用于安装带有针线的针; 主轴; 用于经由主轴驱动针杆的缝纫机马达; 床部分,包括用于与所述针头协同操作的所述针线的线环的环形接收器; 环路接收器驱动轴连接以与环路接收器相关联地移动; 驱动马达,用于独立于主轴驱动取环驱动轴; 第一检测单元,用于检测主轴的旋转状态并相应地输出第一检测信号; 第二检测单元,用于检测取环驱动轴的旋转状态,并相应地输出第二检测信号; 以及同步控制单元,用于基于来自第一检测单元的第一检测信号和来自第二检测单元的第二检测信号来控制驱动马达和缝纫机马达中的至少一个,使得回路接收器和主轴旋转 同步。