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    • 2. 发明授权
    • Thread tension control device for a sewing machine
    • 缝纫机线张力控制装置
    • US06595150B2
    • 2003-07-22
    • US10206220
    • 2002-07-29
    • Tohru Yamazaki
    • Tohru Yamazaki
    • D05B1912
    • D05B47/04D05B69/08
    • A pair of tension discs is disposed on a tension stud fixed in part of a sewing machine main body. A pneumatic cylinder has a drive rod. The drive rod moves at least one of the tension discs to other tension disc so that one tension disc is pressed to other tension disc. An air regulator is interposed between the pneumatic cylinder and an air supply source, being composed in an electropneumatic system for converting between voltage and air pressure. By controlling the applied voltage to the electropneumatic air regulator on the basis of an instruction from a microcomputer, the set pressure of the air supplied to the pneumatic cylinder is adjusted. Thereby the pressure to the thread held between the pair of tension discs, that is, the thread tension is controlled. As a result, without having to stop the operation of the sewing machine, the thread tension can be adjusted promptly and appropriately.
    • 一对张力盘设置在固定在缝纫机主体的一部分上的张紧杆上。 气缸具有驱动杆。 驱动杆将至少一个张力盘移动到其它张紧盘,使得一个张力盘被压到其他张力盘上。 空气调节器介于气动气缸和空气供应源之间,由用于在电压和空气压力之间转换的电动气动系统组成。 通过基于微型计算机的指示控制对电动气动空气调节器的施加电压,调节供给到气缸的空气的设定压力。 由此,保持在一对张力盘之间的线的压力,即线张力被控制。 因此,无需停止缝纫机的动作,可以及时适当地调整线张力。
    • 4. 发明授权
    • Air control switch set for an overedge sewing machine
    • 空气控制开关设置为封闭缝纫机
    • US6058861A
    • 2000-05-09
    • US352770
    • 1999-07-14
    • Huang-Yuehe Chou
    • Huang-Yuehe Chou
    • D05B69/08
    • D05B69/08Y10S112/03
    • An air control switch set for a switching machine, including a base frame, an air control valve fixedly mounted on the base frame to guide air from an air source to an air nozzle and thread suction device, a switch controlled to close/open the air control valve, a control bar vertically slidably coupled to the base frame and reciprocated by a pedal, a pull rod having a bottom end fixedly fastened to the base frame and a top end coupled to a motor through a link, a stop member fixedly mounted on the control bar, and a rocker arm turned about a pivot at the base frame and forced by the stop member to press on the switch in opening the air control valve upon a down stroke of the control bar before the base frame is lowered with the control bar to move the link in turning on the motor.
    • 一种用于开关机的空气控制开关,包括基架,固定地安装在基架上的空气调节阀,以将空气从空气源引导到空气喷嘴和螺纹抽吸装置,开关被控制以关闭/打开空气 控制阀,一个可垂直滑动地联接到基座并由踏板往复运动的控制杆,具有固定在基架上的底端的拉杆和通过连杆联接到马达的顶端,固定件固定地安装在 所述控制杆和摇臂在所述基座框架处转动,并且在所述基座下降之前,所述控制杆在所述控制杆下降时由所述止动构件压迫所述开关以打开所述空气控制阀, 在打开电机时移动链接。
    • 5. 发明授权
    • Control device for a differential feed of a sewing machine
    • 缝纫机差动进给控制装置
    • US4412498A
    • 1983-11-01
    • US370797
    • 1982-04-22
    • Hans Scholl
    • Hans Scholl
    • D05B27/08D05B69/08
    • D05B69/08D05B27/08D05D2205/16D05D2207/02
    • A control device for a differential feed system of a sewing machine in which a control box is connected to a control motor regulating the relation of the feed rates imparted to feed elements engaging a workpiece. The control motor is formed as a pneumatic cylinder composed of individual single acting cylinders arranged in a carrier tube is series, and is operably connected to the differential feed system including two independently adjustable feed mechanisms each regulated by such a pneumatic cylinder. Different feeding conditions for the workpiece, such as feeding the workpiece in a compressed, stretched or neutral relation at various stitch lengths, may be selected by the operator at the control box.
    • 一种用于缝纫机的差动进给系统的控制装置,其中控制箱连接到控制马达,控制马达调节施加到与工件接合的进给元件的进给速度的关系。 控制电动机形成为由布置在承载管中的单独的单作用气缸组成的气缸,并且可操作地连接到差速进给系统,该差速进给系统包括由这种气缸限制的两个独立可调进给机构。 可以通过操作员在控制箱中选择工件的不同进给条件,例如以各种针迹长度将工件送入压缩,拉伸或中性关系。