APPARATUS FOR CONTROLLING THE WARP BEAM OF A WARP KNITTING MACHINE

摘要

An apparatus for controlling the drive mechanism of the warp beam of a warp knitting machine is disclosed. A pressure roll is carried by a support arm biased toward the warp beam so that the pressure roll engages the warp beam. The pressure roll is operatively connected to a signal generator which emits signals representative of the speed and thus, the amount of yarn withdrawn from the warp beam. A controller receives the generated signals compares the signals to a predetermined knitting machine operating standard. A control signal is generated to the warp beam drive mechanism for controlling the speed of yarn delivery from the warp beam. The control signal is amplified in an amount proportional to the decrease in diameter of the warp beam whereby the control signal is amplified more as the diameter of the warp beam decreases so that the warp beam drive mechanism receives stronger control signals and achieves greater response in warp beam speed control when increased acceleration and deceleration of the warp beam occurs at smaller warp beam diameters.