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    • 9. 发明授权
    • Control system for hydraulic needle bar positioning apparatus for a
tufting machine
    • 用于簇绒机的液压针杆定位装置的控制系统
    • US4829917A
    • 1989-05-16
    • US226222
    • 1988-07-29
    • Michael R. MorganteGreogory J. GuzewichHenry J. KowalChristopher La MendolaRandall E. Stanfield
    • Michael R. MorganteGreogory J. GuzewichHenry J. KowalChristopher La MendolaRandall E. Stanfield
    • D05C15/10D05B19/14D05C15/30
    • D05C15/30D05D2207/02
    • An electronic computer control for a hydraulic actuator for shifting a needle bar to different transverse positions in a tufting machine. The computer control directs the hydraulic actuator to be driven in response to the predetermined stitch pattern information in the computer control circuit, which determines the amount of relative tansverse shifting of the needle bar for each stitch location, in such a manner that the needle bar is shifted transversely only a needle gauge, or a multiple needle gauge, at a time and only while the needles are out of the backing fabric. The computer control also controls the velocity of the transverse movement of the needle bar in a gradual manner to minimize any shock created by the transverse movement of the needle bar upon the tufting machine. In order to enhance the smooth and gradual shifting movement of the needle bar, the computer control command signals commence prior to the actual commencement of needle bar shifting and terminate prior to the re-entry of the needles into the backing fabric to counteract any delayed inertial movement of the needle bar in response to the computer command signals.
    • 一种用于在簇绒机中将针杆移动到不同横向位置的液压致动器的电子计算机控制器。 计算机控制器响应于计算机控制电路中的预定缝合图案信息来引导要驱动的液压致动器,其确定针脚针对每个针脚位置的针杆的相对倾斜移动量,使得针杆为 一次仅横向移动针规或多针规,并且仅当针脱离背衬织物时。 计算机控制器还以逐渐的方式控制针杆的横向运动的速度,以最小化由针杆在簇绒机上的横向运动产生的任何冲击。 为了增强针杆的平稳和逐渐的移动运动,计算机控制指令信号在针杆移位的实际开始之前开始,并且在将针重新进入背衬织物之前终止以抵消任何延迟的惯性 响应于计算机命令信号的针杆的移动。