Device for damping oscillations of a winding bobbin in spinning, twisting or winding machines
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 3, 2001
Grant Date -
N/A
app pub date -
Oct 7, 1999
filing date -
Nov 19, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A damping device is provided for damping the oscillations of a winding bobbin in spinning, twisting or winding machines. A bobbin holder, which can be swivelled around a swivel axle affixed to the machine, supports the rotatably supported winding bobbin, which is pressed against a drive roller. Damping elements act in swivel directions of the bobbin holder, the effect of the damping elements being greater in the swivel direction of the winding bobbin when it is raised from the drive roller than in the swivel direction when the winding bobbin is pressed against the drive roller. A friction jaw is provided for damping, which, with its pressing surface is pressed by resilient forces against a friction surface in the form of a cylinder surface. The axis of the cylinder surface is the swivel axle of the bobbin holder. The resilient force which loads the pressing surface exerts a moment on the bobbin holder, which tends to lift the winding bobbin from the drive roller. When the winding bobbin is raised from the drive roller, the pressing surface is thus drawn more firmly to the cylinder surface, which increases the damping effect, whereas in the other swivel direction the pressing surface yields flexibly, which weakens the damping effect.
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