Extensive practical experience in the modernization of Autocoro Rotor Spinning Machines, particularly in respect of the hydraulic package cradle damping system used on these frames, has lead to the following observations:
it does not function free from play
in the course of time it looses oil, which negatively affects the shock absorbing properties and contamination
a second shock absorber is often necessary, which requires a distinctly higher force for lifting the package
replacing the package cradle damping system is only possible by dismantling the complete winding unit.
Insufficient shock absorbing properties of the package cradle system is often the cause of oval package build-up. This has a particularly negative effect when synthetic and viscose fibres are processed, and at high delivery speeds.
An oval package build-up is associated with numerous side effects:
”bouncing” packages lead to irregular package density
packages with a high degree of bouncing are temporarily no longer driven – the yarn forms crinkles on the packages
incorrect length measuring with diameter-related doffing
problems with the piecer carriage in finding the upper yarn layer reduce machine efficiency
variable winding tensions and thus deterioration of yarn quality (yarn elongation)
in case of low winding tension due to shock absorption unreliable functioning of mechanical yarn detectors
displaced yarn layers and inexact yarn traverse result in take-off interruptions in subsequent processes (e.g. warping)
To solve all these problems, SUESSEN has developed a shock absorber, which
can be fitted quickly on the machine (within about 10 minutes) –the winding unit need not be dismantled, the old hydraulic shock absorber may remain in the winding unit
functions absolutely free from play
does not require any oil
does not require any maintenance
This solution is available for all Autocoro machines from SE 7 to SE 11. Due to the higher machine efficiency the SUESSEN Package Cradle Shock Absorber has a very short payback period.