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76 条记录 (耗时 0.011 秒)

    Closed-loop control device of a mechanical sewing machine and method for controlling the same
    25.
    发明授权
    Closed-loop control device of a mechanical sewing machine and method for controlling the same 有权

    公开(公告)号：US10563332B2

    公开(公告)日：2020-02-18

    申请号：US15454540

    申请日：2017-03-09

    申请人： Hsuan-Tai Chen

    发明人： Hsuan-Tai Chen

    IPC分类号： D05B69/18 ,  D05B69/28 ,  H02P7/28

    摘要： A closed-loop control device of a mechanical sewing machine includes an isolated switch-mode power supply module, a DC motor, a speed control module, a processor, an electronic switch, a current detection module and a voltage detection module. The isolated switch-mode power supply module rectifies an AC power to a DC power and supplies the DC power to the DC motor. The speed control module sends a speed signal to the processor. The processor adjusts an output voltage to the DC motor according to the speed signal. The current detection module and the voltage detection module further detect an operating current signal and an operating voltage signal of the DC motor for the processor to control a turn-on time of the electronic switch to adjust an average operating voltage of the DC motor according to the operating current signal, the operating voltage signal and the speed signal.

    Metering device for sewing machines
    27.
    发明授权
    Metering device for sewing machines 失效
    用于缝纫机的测量装置

    公开(公告)号：US5178081A

    公开(公告)日：1993-01-12

    申请号：US520585

    申请日：1990-05-08

    申请人： Wolf-Rudiger von-Hagen ,  Horst Pordzik

    发明人： Wolf-Rudiger von-Hagen ,  Horst Pordzik

    IPC分类号： D05B29/06 ,  D05B35/06 ,  D05B69/28

    CPC分类号： D05B35/06 ,  D05B29/06 ,  D05D2205/16 ,  D05D2303/04 ,  D05D2305/14

    摘要： A tape feed device for an elastic tape from a supply at a sewing machine having a biased actuating lever, whose angular position varies in dependence upon the size of a loop and which controls the motor of a take-off roller. An adjuster, which is electrically actuable in a controlled manner, acts on the actuating lever in such a way that the tape tension can be altered in accordance with an electrical variable. The adjuster has a coil whose electromagnetic field lines cut an armature which is connected to the actuating lever.

    摘要翻译： 一种用于来自缝纫机的电源的弹性带的带馈送装置，具有偏置的致动杆，其角度位置根据回路的尺寸而变化，并且控制取出辊的马达。 以可控制的方式电致动的调节器以这样的方式作用在致动杆上，使得带张力可以根据电气变量而改变。 调节器具有线圈，其电磁场线切割连接到致动杆的电枢。

    Linking mechanism for sewing machine
    28.
    发明授权
    Linking mechanism for sewing machine 失效
    缝纫机连杆机构

    公开(公告)号：US4957053A

    公开(公告)日：1990-09-18

    申请号：US231273

    申请日：1988-08-12

    申请人： Hsiao C. Liu

    发明人： Hsiao C. Liu

    IPC分类号： D05B29/02 ,  D05B69/28

    CPC分类号： D05B69/28 ,  D05B29/02

    摘要： A transmission mechanism used for sewing machines equipped with a carriage comprising a base plate having an opening, a fixing clamp for mounting the base plate to the carriage, and an apparatus for transmission which can be vertically attached to the base plate under the opening thereof. The transmission apparatus has a plunger passable through the opening to perform a reciprocating movement. The transmission apparatus has all its elements substantially disposed within a housing encased by an upper cover and a lower cover thereof to form an integral piece and to reduce the total length thereof.

    摘要翻译： 一种用于装备有具有开口的基板的滑架的机构的传动机构，用于将底板安装到滑架上的固定夹具和可在其开口下方垂直地安装在基板上的传动装置。 传动装置具有可穿过开口的柱塞，以执行往复运动。 传动装置具有其所有元件基本上设置在由上盖和下盖包围的壳体内，以形成整体件并减小其总长度。

    Workpiece holding-down device for a sewing machine
    29.
    发明授权
    Workpiece holding-down device for a sewing machine 失效
    缝纫机工件压紧装置

    公开(公告)号：US4538533A

    公开(公告)日：1985-09-03

    申请号：US535858

    申请日：1983-09-26

    申请人： Torao Ohchi ,  Hideo Yasui

    发明人： Torao Ohchi ,  Hideo Yasui

    IPC分类号： D05B29/02 ,  D05B69/28

    CPC分类号： D05B29/02

    摘要： A workpiece holding-down device for a sewing machine comprises a spring-loaded presser bar and foot assembly supported in the framework of said sewing machine, a drive mechanism for moving said assembly vertically, and a control circuit for controlling the movement of said presser bar. The foot assembly includes signal means for positioning the presser bar and foot assembly in a controlled position in response to the actuation of an operation member or stored information.

    摘要翻译： 一种用于缝纫机的工件压紧装置包括一个支撑在所述缝纫机的框架中的弹簧加压的压杆和脚组件，用于垂直移动所述组件的驱动机构，以及用于控制所述压脚杆的运动的控制电路 。 脚组件包括用于响应于操作构件的致动或存储的信息将压脚杆和脚组件定位在受控位置的信号装置。

    Needle positioner for sewing machine
    30.
    发明授权
    Needle positioner for sewing machine 失效
    缝纫机针定位器

    公开(公告)号：US4414909A

    公开(公告)日：1983-11-15

    申请号：US244598

    申请日：1981-03-17

    申请人： Murel B. Bray

    发明人： Murel B. Bray

    IPC分类号： D05B69/28 ,  D05B69/22 ,  D05B69/08

    CPC分类号： D05B69/28 ,  D05D2207/02

    摘要： A needle positioner for a sewing machine having a shaft connected to a main drive motor to move a sewing machine needle reciprocally by a stitching operation which includes a crank rotatably supported on a frame drivably connected to the sewing machine shaft with a plurality of pneumatically actuated cylinder/piston assemblies, the pistons of which are engagable with the crank to move the crank and therefore the shaft through predetermined rotary angles together with a plurality of conduits having valves including control valves therein which are adapted to communicate the cylinder/piston assemblies with a source of pneumatic pressure so that selective actuation of the control valves produces rotary movements of the crank through the appropriate cylinder/piston assembly to move the needle into either a top or bottom position.

    摘要翻译： 一种用于缝纫机的针定位器，其具有连接到主驱动马达的轴，以通过缝合操作来往复移动缝纫机针，该缝合操作包括可旋转地支撑在可驱动地连接到缝纫机轴的框架上的曲柄，多个气动缸 /活塞组件，其活塞可与曲柄接合，以使曲柄和所述轴通过预定的旋转角度与多个具有阀的管道一起移动，所述管道包括其中的控制阀，其适于使气缸/活塞组件与源 的气动压力，使得控制阀的选择性致动通过适当的气缸/活塞组件产生曲柄的旋转运动，以将针移动到顶部或底部位置。