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The invention relates to yarn storage devices of the type in which a single layer of yarn turns are accommodated on a drum. The drum according to the invention comprises longitudinal members, for example rods or struts, along which a plurality of yarn displacing members are made to slide by cam means as the yarn is wound onto the drum. Where the drum is rotated relative to a stationary cam means, the drive may be through a form of friction clutch.
Feeder system is a highly efficient instrument which provides equally controlled tension yarn to all feeders. Machines stops instantly in case of yarn breakage and single indicator lamp on the feeder lights up to indicate the affected yarn bobbin.
You can instantly splice broken yarn and machine becomes functional within seconds, where as traditional machines with tape feeder system take around one hour to restarts. So it definitely improves you production efficiency and also produces export quality fabrics
In a yarn storage feeder system of the type disclosed in U.S. Pat. No. 4,226,379 and having a yarn storage unit upon which a quantity of yarn is maintained from a yarn supply for intermittent withdrawal and delivery to yarn feeding and consuming means, such as a loom, and in which the yarn storage unit is driven by a low inductance DC motor such as a flat armature or pancake.
DC motor powered by a full wave rectified AC current, a significant improvement in motor operating efficiency, especially output torque, is achieved by incorporating an electrical choke in the circuit supplying such current to the DC motor.
In the operation of the system the output speed of the motor is monitored and the current flow to the motor is controlled to maintain a preset reference speed by an SCR phase control unit, preferably through a transistor included in the motor circuit and having its base biased by the output of the SCR unit in synchronism with the frequency of the rectified AC current for a fraction of the duration of the current pulses, the extent of the fraction being adjusted to maintain the motor output speed at the reference level.
The quantity of collected yarn can also be monitored and the speed control unit momentarily deactivated if that quantity exceeds a predetermined amount.
The functioning of the yarn supply via storage feeders in order to avoid different yarn tensions is also dependent upon the types of yarn used. In order to be able to match up to the increased requirements of the new yarns, the surfaces of the thread wheels have an anodised coating, just as the metallic parts of the thread in-feed and out-flow - as well as the thread guides - are powder-coated with ceramic.
Like this a yarn storage feeder work and Give a more extra reliable process for creating a comfortable garment . it is a glorious invention in the field of cloth and garments.
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