If the draw frame has come of age and some repairs are due, an overhaul strategy is key. In this case, Rieter recommends upgrading the SERVOmotor, the sensors and the fibre touching parts to optimize production, reduce downtime and save maintenance costs.
This upgrade package is an adaptation of the latest drafting system generation as used in the RSB-D 50. It replaces the M90 servo motor and gearbox with the new all-in-one SERVOdrive.
Highly accurate sliver scanning and precise control of drafting system speed is the key to an optimum sliver quality.
The B92 EVO sensor measures the speed of the main shaft. The main shaft is connected to the main motor, which provides the constant speed to the entire system. This is also used to derive the speed of the SERVOdrive for leveling the sliver.
The B2 EVO+ package contains the B200 belt monitor and the B2 EVO speed sensor. Together they ensure the function of the calander discs at the end of the drafting zone.
CLEANcoil is the standard coiler for all fiber materials and therefore offers maximal flexibility. The spiral coiling tube ensures coiling, which is free of drafting faults, even at high delivery speeds. A unique surface finish with a honeycomb structure reliably prevents deposits on the underside of the coiler.
The CLEANtube is an optional control of the coiler drive that prevents trash particles and short fibers accumulating in the sliver duct by periodic cleaning intervals.
This upgrade comprises an improved axle and bearing system that fits perfectly into the existing mounts and uses the same cots as the previous top rollers.
The top and bottom clearer lips in the draw frame drafting zone are critical to ensure consistent quality and uninterrupted
machine operation. The clearer lips support the effective removal of micro dust and short fibers that are stuck to the top
and bottom rollers and pass them on through the suction system to avoid lapping on the rollers.
Draw frames play a key role in every spinning mill in determining the quality of the yarn. To keep the quality of sliver and yarn consistently high and achieve high machine productivity, maintenance of the draw frame is of utmost importance.